Cabin Case for Fractal

2025-07-14 12:57 UTC o3 Open in ChatGPT ↗

You

I need to find a hard / flight case WITH WHEELS that can safely fit the Fractal design Ridge case, while conforming to the british airways / aegean airlines cabin bag size.

ChatGPT

In short:
The Fractal Design Ridge is physically too wide ( ≈ 395 mm deep in its vertical orientation) to fit inside any of the well‑known injection‑moulded “carry‑on” hard cases (Pelican, Nanuk, HPRC, SKB, etc.) without exceeding the 40 – 45 cm width that British Airways and Aegean allow. The only realistic way to travel with the Ridge as cabin baggage and have wheels is a purpose‑built flight case that is cut exactly to the Ridge’s footprint and keeps the exterior within 55 × 40 × 23 cm (if you need to guarantee Aegean turboprop compliance) or 56 × 45 × 25 cm (if you will only fly on Airbus jets). Below is a practical route that builders in the SFF‑PC community have followed, with concrete supplier links, dimensional checks, and tips on specifying the interior foam so the Ridge cannot shift in transit.

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1  — Gather the non‑negotiables

1.1 Ridge envelope

• Vertical/stand‑up mode (i.e. for packing): 374 mm L × 395 mm D × 110 mm H citeturn9search4.
  • Add 10–15 mm all round for shock‑absorbing closed‑cell foam → ≈ 400 × 415 × 140 mm internal clearance.

1.2 Cabin‑bag limits you must satisfy

Airline & fleet	Size (includes wheels & handles)	Weight
British Airways	56 × 45 × 25 cm citeturn10search3	23 kg citeturn10search0
Aegean – Airbus flights	56 × 45 × 25 cm citeturn11search3	8 kg (Eco) / 13 kg (Biz) citeturn11search6
Aegean – Turboprop flights	55 × 40 × 23 cm citeturn11search0	8 kg citeturn11search1

To be safe on every leg, build to 55 × 40 × 23 cm and keep the loaded case ≤ 8 kg.

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2  — Why the usual “carry‑on” hard cases do not work

Popular model (with wheels)	Interior (L × W × H)	Exterior (L × W × H)	Fail reason
Pelican Air 1535	518 × 284 × 183 mm citeturn0search1	558 × 355 × 228 mm	284 mm width < 395 mm Ridge depth
Nanuk 935	521 × 287 × 191 mm citeturn1search0	559 × 356 × 229 mm	Same width issue
HPRC 2550W	510 × 285 × 208 mm citeturn16search6	559 × 350 × 233 mm	Same width issue
Thon 19” Rack Live 15 RA	Ext. 560 × 250 × 400 mm citeturn19search7	Internal rack width 19″ = 482 mm but rack rails steal 40 mm; still too narrow

Diagonal packing was tested mathematically and the Ridge rectangle cannot be rotated to fit inside the 28–29 cm width of these shells without protruding. Consequently, an off‑the‑shelf injection‑moulded case is a dead end for this chassis.

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3  — A proven solution: a cabin‑spec custom flight case with inset wheels

3.1 Off‑the‑shelf cabin shells you can customise

Supplier	Ready‑made “blank” case	Ext. size	Wheel style	Notes
Swanflight – Airline Hand Luggage Case 3	Foamed, pull‑handle & corner casters	56 × 45 × 25 cm citeturn13search0	Recessed rollers	Already meets BA spec; Swanflight will shorten to 55 × 40 × 23 cm on request (they advertise smaller variants “Case 1/2”).
Flightcase Warehouse (FCW) / NSP Cases	Fully bespoke cabin case	Built to drawing citeturn19search0	Telescopic handle + 50 mm recessed wheels	Submit a simple sketch; typical build time 7–10 days.

Both companies use 6–7 mm birch laminate + Penn‑Elcom hardware, giving ~10 mm wall thickness. Request internal net space ≥ 415 × 430 × 140 mm, leaving 10 mm foam all round.

3.2 Specifying the interior

1. Base layer: 10 mm PE40 closed‑cell foam sheet.
2. CNC‑cut cradle: 30 mm foam contoured to Ridge perimeter; include a 15 mm pillar under the PCIe‑side of the case so the weight is spread.
3. Lid layer: Egg‑crate or convoluted foam 25 mm thick so nothing can rattle when closed.
4. Cable well: Sink a 40 × 100 mm pocket ahead of the I/O panel for the mains lead and HDMI/DP pigtail.
5. Tie‑down: Add two Velcro cross‑straps over the aluminium spine of the Ridge for extra security when the case is tipped vertically.

Swanflight’s configurator lets you add CNC foam for a modest surcharge; FCW/NSP quote to drawings or DXF files. A complete Swanflight cabin case with foam comes in at ~7.3 kg empty citeturn13search0; loaded with a typical 5.5 kg Ridge build you will be just inside Aegean’s 13 kg Business cap but over the 8 kg Economy cap, so check your fare class.

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4  — Ordering checklist

Step	Why it matters
Give finished outside dimensions (≤ 55 × 40 × 23 cm) and ask the builder to include wheels & handle within that box.
Supply a PDF with the Ridge outline (395 × 110 mm) and mark the tallest point (the rear I/O shield).
Request 50 mm recessed wheels and a two‑stage pull handle on the 55 cm edge – this keeps the 40 cm side free so the case still stands upright in the sizer‑cage.
Specify Butterfly latches with padlock eyes (both BA and Aegean allow TSA‑style locks on cabin bags when gates insist on pink‑tagging).
Order dark laminate or hexagrip – lighter colours show abrasion quickly and reveal the aluminium edging.

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5  — Alternative stop‑gaps (if you cannot wait for a bespoke build)

1. Soft hybrid roller bags (e.g. Samsonite Respark 55 cm) can squeeze the Ridge diagonally but offer little crush protection; only use if the flight is guaranteed cabin‑only. citeturn2search6
2. Checked‑bag hard cases (Pelican 1615 Air, Nanuk 960) easily fit the Ridge but bust cabin size and may incur heavy fees. citeturn1search3
3. Ship the PC ahead with an insured courier in a rigid Pelican 1620; an extra seat is rarely cost‑effective compared with a purpose‑built cabin case.

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6  — Key take‑aways

• No moulded carry‑on shell is wide enough; the Ridge’s 395 mm depth is the show‑stopper.
• A custom 55 × 40 × 23 cm wheeled flight case with 10 mm foam all round is the only solution that satisfies both BA and Aegean, protects the PC, and still rolls through the airport.
• Swanflight or NSP/Flightcase Warehouse can deliver such a case in the UK for roughly £250–£300 and ≈ 7 kg empty.
• Watch the weight: Economy passengers on Aegean turboprops have an 8 kg limit – plan to book Flex/Business or check the PC in a larger hard case when that restriction applies.

With these specifications in hand you can brief the flight‑case maker confidently and ensure the Ridge arrives in one piece – and in the cabin – on both British Airways and Aegean.

You

what about peli 1560 ?

ChatGPT

The Pelican 1560 is large enough inside to swallow a Fractal Design Ridge, but its external envelope and weight push it outside both British Airways’ and Aegean’s published cabin‑bag limits, so it is not a reliable carry‑on solution for the route you described.

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1 — Physical fit: yes, with room to spare

Item	L × W × H (mm)
Ridge (vertical orientation)	374 × 395 × 110 citeturn1search1
Pelican 1560 – interior	506 × 380 × 229 citeturn0search0turn1search0

• By putting the Ridge’s longest edge (395 mm) along the case’s 506 mm axis and its 374 mm edge across the 380 mm axis, the PC drops straight in with ≈ 6 mm clearance on one side.
• The 110 mm thickness leaves ~119 mm of headroom, plenty for 25–30 mm of closed‑cell foam above and below.

So, on pure volume, the 1560 works.

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2 — Cabin‑size compliance: no

Airline	Published cabin maximum (cm)	Pelican 1560 exterior (cm)
British Airways	56 × 45 × 25 citeturn0search1	56.1 × 45.5 × 26.5 citeturn0search0
Aegean (all fares)	55 × 40 × 23 citeturn0search2turn0search6	56.1 × 45.5 × 26.5

• The 1560 is 5 mm wider and 15 mm deeper than BA’s sizer cage, and it exceeds Aegean’s width by 5 cm and depth by 3.5 cm.
• Travellers report mixed success carrying it on U.S. airlines, but only when staff do not test it in the sizer; if it is measured, it fails citeturn1search2turn1search5.

In short, you would be gambling on gate leniency—unwise when a desktop‑PC is inside.

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3 — Weight: heavy for Aegean limits

• Empty 1560 with foam: 7.7 kg citeturn0search0turn1search6.
• Typical Ridge build (GPU, PSU, fans): ≈ 5.5 kg citeturn1search1turn1search4.
• Combined: ~13 kg.
  • BA’s cabin weight cap is 23 kg—acceptable.
  • Aegean’s cap is 8 kg in Economy and 13 kg in Business—so you would already be over in Economy even before adding a power cable.

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4 — Verdict & better options

1. Pelican 1560

   • ✅ Ridge fits internally.
   • ❌ Fails both airlines’ size boxes; likely to be gate‑checked and treated as hold luggage.
   • ❌ Heavier than Aegean’s Economy allowance.

2. Stick with a purpose‑built cabin flight case trimmed to ≤ 55 × 40 × 23 cm (see previous answer).

   • Meets every size rule, can be built lighter (~7.3 kg including foam).
   • Costs similar to a 1560 once foam is added.

3. If you insist on an injection‑moulded case and are prepared to check it: a Pelican 1615 Air (754 × 424 × 230 mm int.) gives more foam margin and weighs less than the classic 1650, but it must go in the hold and may incur oversize fees. citeturn1search3

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Bottom line

The 1560 is a great protective shell, but it is not cabin‑legal on British Airways or Aegean and will probably force you into checked‑bag territory. For guaranteed carry‑on status, a custom cabin‑spec flight case (or a soft roller if you can accept minimal protection) remains the only practical path.

You

is it safe to check-in the fractal design ridge with all components inside? (with a lock on the peli case)

ChatGPT

Quick take‑away – A Pelican‑style hard case gives the shell strength you need, but a Ridge‑class PC still faces three real hazards when it goes in the aircraft hold: (1) drop‑and‑vibration shocks inside the case, (2) cargo‑hold temperature/pressure swings, and (3) airline liability rules that exclude fragile electronics. If you immobilise every heavy part (GPU, cooler, PSU) in dense foam, use a TSA‑recognised lock, keep any spare lithium batteries in your cabin bag and accept that the airline will not pay for damage, you can check the Ridge with a good chance of it arriving alive. Below are the details and the precautions most builders take.

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1 What the baggage hold will do to your PC

1.1 Impact and vibration levels

• Hard‑case makers design to ATA‑300 Category I, which requires surviving dozens of drops from 0.9–1 m and guarantees at least 100 round‑trips for the shell citeturn3search0turn3search3.
• Even so, the object inside can still see shocks of 25 g or more—enough to crack solder joints or shear a PCIe slot if the mass is not supported citeturn6search7.
• Electronics that experience a single drop or sustained vibration between 2 – 200 Hz can accrue board‑level damage and latent cracks citeturn6search1turn6search3.

1.2 Temperature and pressure

• Modern wide‑body holds are pressurised; typical temperatures stay between ≈ 7 °C and 25 °C citeturn4search3turn4search4. A datalogger run from Paris‑Dubai‑Sydney saw a low of 13 °C and a high of 28.5 °C citeturn4search1 – perfectly safe for solid‑state components.
• The built‑in Pelican pressure valve equalises ambient changes, so no extra venting is needed citeturn2search1.

1.3 Baggage handling reality

Ergonomic studies put typical suitcase drops at roughly 1 m and note routine twisting/throwing of bags that cause injuries to handlers citeturn0search2turn1search4. Plan for those shocks to reach the case.

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2 Regulatory and airline constraints

Issue	Rule	Practical meaning
Lithium batteries	FAA: spare Li‑ion or Li‑metal cells are banned from checked bags; installed batteries are OK citeturn0search5turn0search11	Leave the Ridge’s tiny CMOS coin cell inside, but carry power‑banks or spare laptop cells in your cabin bag.
Fragile electronics	British Airways & Aegean both list laptops/PCs as items placed in the hold “at passenger’s risk” and may ask you to sign a limited release citeturn5search4turn5search5	Damage payouts are capped (~£1 000) and often denied; consider third‑party insurance.
Locks	TSA can cut non‑approved padlocks; approved locks carry the red Travel Sentry logo citeturn0news57turn0search9	Fit a TSA‑recognised lock so inspection does not destroy the latch.

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3 Making the Ridge survivable in the hold

3.1 Strip or brace heavy parts

1. Remove the GPU (and any tower air‑cooler) and carry them separately; the card’s mass is the #1 source of slot damage in shock tests citeturn1search5turn1search1.
2. If removal is impossible, wedge high‑density PE foam tightly under the GPU and across the cooler fins so nothing can flex.

3.2 Immobilise what stays inside

• Line every wall of the Pelican with 25 – 30 mm closed‑cell PE or XLPE so the Ridge cannot slide.
• Fill voids with pick‑n‑pluck foam or custom‑cut blocks, aiming for at least 60 % crush distance in a 1 m drop, matching ATA‑300 guidance citeturn3search0.
• Use Velcro straps through the Ridge’s ventilation slots to tie the chassis down to the base foam.

3.3 Pressure and ESD precautions

• Leave the Pelican’s valve uncovered; it equalises cabin‑to‑hold pressure automatically citeturn2search1.
• Slip an anti‑static bag over the PC before foaming to avoid charge build‑up in low‑humidity cruise air citeturn6search2.

3.4 Weight management

A Ridge build (~5.5 kg) plus a Pelican 1560 with foam (~7.7 kg) totals ≈ 13 kg citeturn2search1turn1search5. That is well under BA’s 32 kg checked limit but close to Aegean’s standard 23 kg hold limit, so you remain compliant.

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4 Check‑in workflow checklist

1. Photograph the PC and interior packing before closing the lid – useful evidence in a damage claim.
2. Affix a “Fragile – Electronics” label and the airline’s limited‑release tag.
3. Use a TSA‑recognised lock; place a polite note on top of the foam (“Custom‑packed computer – please reseal carefully”) to encourage careful inspection citeturn0news57.
4. Keep spare drives, RAM sticks, dongles and any lithium‑powered peripherals in your carry‑on.
5. Declare the case at the desk and ask for a manual “heavy/fragile” hand‑lift sticker; many stations still gate‑route such bags to a chute‑free load citeturn0search2.

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5 Should you do it? – Risk vs. alternatives

With good foam blocking and the GPU removed, the statistical risk of hardware failure is low and similar to shipping high‑end camera rigs or broadcast gear in the same cases – equipment Pelican designed the line for citeturn2search0.
However, remember:

• The airline will not pay for hidden electronic damage citeturn5search1.
• A courier in the original Ridge carton with double boxing and full‑value insurance can cost little more than an extra checked bag on a trans‑European flight and avoids airport drops.
• If you fly frequently, a custom cabin‑spec flight case (55 × 40 × 23 cm) that lets the PC ride in the overhead locker is still safest.

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6 Bottom line

Yes—checking a fully assembled Fractal Design Ridge in a locked Pelican case can be done safely if you remove or brace massy components, surround the chassis with at least 25 mm of firm foam on every side, use a TSA‑approved lock and accept that the carrier’s normal liability will not cover electronic damage. Follow the packing steps above and the Ridge should emerge unscathed; skip them and you are gambling with every baggage‑handler toss.

You

I have the following dilemma:

I need a case by 18th of July.

1. Spend 400 euros to get the peli 1560 which fits the pc and can get delivered on time, but might not be accepted in the cabin if they ask me to measure it?
2. Order a custom one from here https://theflightcasecompany.com/desktop-pc-tower-flight-case but get it much much later than I need it, and travel to rainy wales with a cheap basic cabin bag for clothes, puttinh my PC into a dry bag or something ?

ChatGPT

In the next four days you are balancing certainty of delivery against certainty of cabin acceptance. The Pelican 1560 can be on your doorstep in time, but it is 5 mm too wide and 15 mm too deep for British Airways’ sizer and far outside Aegean’s stricter box, so there is a real chance it will be gate‑checked; if that happens and you have packed the Ridge properly it should still arrive safely in the hold, but you will have spent €400 on a case that still travels as checked baggage. A bespoke cabin‑legal flight case from NSP/Flight‑case Company will solve the sizer problem—but their published 15‑ to 20‑working‑day lead time means it cannot be ready by 18 July unless the factory agrees to an emergency rush build. Below is a detailed risk–benefit breakdown and two practical fallback plans so you can decide which compromise hurts least.

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1 Facts that cannot be ignored

Item	Data point	Source
Ridge envelope (vertical)	374 × 395 × 110 mm	citeturn1search1
Pelican 1560 interior	506 × 380 × 229 mm	citeturn0search7
Pelican 1560 exterior	56.1 × 45.5 × 26.5 cm	citeturn0search7
BA cabin limit	56 × 45 × 25 cm	citeturn3search3
Aegean cabin limit (Economy)	55 × 40 × 23 cm & 8 kg	citeturn11search0
Pelican 1560 weight with foam	7.7 kg	citeturn0search7
Typical Ridge build weight	~5.5 kg	citeturn1search1
NSP/Flight‑case Company lead time	15–20 working days	citeturn0search1
Swanflight standard lead time	20–25 working days	citeturn9search0
Amazon EU listing – 1560 price & Prime delivery 17 July	€405–€481	citeturn6search0
BA Basic fares often gate‑check oversize bags	frequent flyer report	citeturn0search11
Aegean Light fares saw “no enforcement” on some flights but mandatory checks on others	FlyerTalk samples	citeturn0search4turn11search2
Wales mid‑July: mean rainfall ≈ 84 mm/month, frequent showers	Met Office climate data	citeturn7search0

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2 Option A – Buy the Pelican 1560 now

Pros

• Guaranteed delivery by 17 July via Prime or local imaging‑gear retailers. citeturn6search0
• Ridge fits easily with ≥25 mm foam on every side, giving excellent shock protection. citeturn0search7
• If BA happens to let it on board you have wheels, a pull handle and lifetime warranty.

Cons & mitigations

Risk	Likelihood	Impact	Mitigation
Fails BA/Aegean sizer (5 mm wide, 15 mm deep)	Medium‑high—multiple user reports of gate checks on busy flights citeturn0search11	Forced hold check; no cabin access	Pack as if for hold (GPU out or braced; 25–30 mm closed‑cell foam). Add TSA lock.
Exceeds Aegean 8 kg Economy limit (total ≈ 13 kg)	Certain	Fee or mandatory check	Book “Flex”/Business class (13 kg cabin) or accept hold check.
€400 sunk cost yet still checked	Moderate	Financial only	Accept that the 1560 doubles as your permanent checked‑baggage case.

Real‑world odds: recent FlyerTalk threads show inconsistent enforcement—some Aegean crews ignore measurements, others weigh every bag on Light tickets citeturn11search2; BA staff at LGW and LHR have been recorded pink‑tagging anything even 1 cm oversize on full flights citeturn0search11. Treat the 1560 as checked‑bag‑probable and it becomes a safe if expensive answer.

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3 Option B – Order the bespoke cabin case

What you get

• Interior cut precisely for the Ridge, wheels and handle inside a 55 × 40 × 23 cm envelope—guaranteed cabin compliance on every airline.
• Weight with 6.5 mm birch + foam ~7 kg, keeping you inside Aegean’s Business 13 kg limit.
• Lockable butterfly latches and replaceable hardware.

Show‑stopping issue

• Lead time 3–4 weeks on standard service (NSP 15–20 working days; Swanflight 20–25 working days). citeturn0search1turn9search0
• Both factories advise calling for rush orders but do not publish a guaranteed express option online.

Can you accelerate it?

• Phone NSP (+44 1622 724900) or Swanflight (+44 1740 623555) immediately; both will quote a “premium queue” fee if they have capacity.
• Even with a paid rush, anecdotal reports put the absolute minimum at 7 working days—still missing 18 July unless a slot opens today.

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4 Fallback and hybrid plans

Plan	How it works	Pros	Cons
Ship the Ridge to Wales by UPS Express Saver (10 kg, 55 × 40 × 25 cm, Greece → UK ≈ €120) citeturn0search6	PC arrives 1‑day ahead; you fly with clothes only.	No carry‑on stress; insurance up to declared value.	Still need a solid carton & foam; courier risk.
Check the 1560 and carry GPU/SSD in hand bag	GPU is main fragile mass; PC better protected.	Shrinks weight to ~9 kg in case; cheaper PC insurance.	Two separate items to juggle; GPU still fragile.
Rent or borrow a monitor/keyboard in Wales; travel with GPU/SSD only	Use local SFF barebones; swap drives.	Avoids PC transport entirely.	Requires technical time on arrival; availability uncertain.
Soft roller + dry bag for Ridge (accept rain risk)	Cheapest stop‑gap if funds tight.	Case cost near zero.	Minimal impact and water protection in Welsh showers (average July rainfall 84 mm) citeturn7search0.

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5 Decision matrix (score 1 – 5, higher = better)

Criterion	Pelican 1560 now	Custom later	Courier Ridge	Soft bag
Arrives by 18 July	5	1	4	5
Cabin compliance	2	5	5	3
Rain protection	5	5	5	2
Shock protection	5	5	4	1
Total cost (case+fees)	3	3	3	5

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6 Practical recommendation

1. Order the Pelican 1560 today from a seller that guarantees 17 July arrival (Amazon EU Prime shows this date) citeturn6search0.
2. Pack for hold check even if you hope to keep it in the cabin:
   • Remove or foam‑brace the GPU and cooler.
   • 25 – 30 mm closed‑cell foam cradle; Ridge in anti‑static bag.
   • TSA‑approved padlock.
3. Book the flight with either (a) BA fare that already includes a 23 kg checked bag or (b) Aegean Flex/Business so weight is legal; the extra €35–€70 fare difference is cheaper than an airport overweight penalty. citeturn10search0
4. Phone NSP/Swanflight today and ask for a rush quote. If they can promise dispatch by 17 July at a surcharge you can cancel the Pelican order before it ships; if not, you still have a viable 1560 plan.
5. Use a lightweight waterproof duffel for clothes so you stay within BA’s free two‑bag cabin policy (hand bag + small cabin bag) and leave overhead volume for the Pelican if you get lucky.

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Bottom line

With only four days left, certainty of having a protective container outweighs certainty of cabin acceptance. The Pelican 1560 is the only unit you can actually obtain in time; treat it as a premium checked case and you will travel with peace of mind. Start a rush enquiry with the flight‑case maker in parallel—if a miracle fast‑track slot opens you can always return the Pelican under its free‑return policy. Otherwise, pack the Ridge to survive a hold journey, lock the case, and let the gate staff decide where it rides.

You

My cheap cabin bag is still kinda hard shell and I have padded everything inside with foam. I could also use 2 dry bags. The GPU is SUPER secure inside the Ridge. I am NOT couriering anything. The flight is already booked with Aegean (airbus plane) on the way there, and Airwings on the way back. I have already paid for checked luggage just in case.

You

My cheap cabin bag is still kinda hard shell and I have padded everything inside with foam. I could also use 2 dry bags. The GPU is SUPER secure inside the Ridge. I am NOT couriering anything. The flight is already booked with Aegean (airbus plane) on the way there, and Airwings on the way back. I have already paid for checked luggage just in case.

ChatGPT

Bottom‑line: Your improvised hard‑shell cabin trolley, padded with firm foam blocks and wrapped in nested dry‑bags, can work—provided you (a) keep the outside within 55 × 40 × 23 cm / 8 kg for the Aegean Airbus outbound and the Eurowings* return, and (b) pack it as if it will be gate‑checked anyway. Aegean’s Airbus A320 family allows 56 × 45 × 25 cm, but its generic policy and Eurowings’ limit are both 55 × 40 × 23 cm, so treating the stricter box as “hard” avoids surprises. If the bag fails the sizer or the weight check, it will go in the hold; with 25 ‑ 30 mm of closed‑cell foam on every side, an immobilised GPU, a dry‑bag liner, and a TSA lock, the Ridge should ride safely even there. Below are the key details, the stress‑points to check tonight, and a short packing checklist.

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1  Know your hard limits for each flight

Sector	Airline / aircraft	Size limit (includes wheels)	Weight limit	Source
Outbound	Aegean (A320)	56 × 45 × 25 cm (general) or 55 × 40 × 23 cm on DH8/ATR; Airbus crews normally use the larger box	8 kg Economy	citeturn0search1turn0search5
Return	Eurowings (often branded “Airwings” in GDS)	55 × 40 × 23 cm	8 kg in BASIC/SMART	citeturn2search1turn2search2

Take‑away: if your trolley is ≤ 55 × 40 × 23 cm and ≤ 8 kg, it is legal on both flights and should avoid forced check‑in. If it is bigger, you already have a paid hold bag—pack the PC as though it will end up there.

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2  Reality check: can the trolley stay under 8 kg?

• Fractal Ridge fully populated: ~ 5.5 kg (SFX PSU, GPU, two NVMe drives). citeturn0search2
• Cheap ABS/polycarbonate cabin shell: 2.2 – 3.0 kg depending on brand (IATA database averages).
• Foam & two 13 L dry‑bags: ≈ 0.4 kg.

Typical total: 8.1 – 9 kg—just over Eurowings’ and Aegean’s cap. Take one of these steps to shave the last 1‑2 kg:

1. Remove the GPU and carry it in your under‑seat personal item; modern 3‑fan boards weigh 1.1‑1.6 kg and are the prime source of slot damage anyway. Reddit’s SFF community shows this is the most common travel tactic. citeturn0search2
2. Swap the Ridge’s UK/EU kettle lead for a lightweight figure‑8 or Mickey‑Mouse cable in your clothing bag (~ 0.2 kg).
3. Put the heavy airline‑compliant padlock on the hold suitcase; use a TSA 004 zipper lock (35 g) on the PC bag instead.

With the GPU out, the trolley usually weighs 6.5 ‑ 7 kg—comfortably legal.

---

3  Impact, vibration and rain—how much protection does your setup give?

3.1  Drop and crush forces

Baggage‑handling studies show routine drops from 0.5 ‑ 1 m and stacking loads up to 22 kg/bag. citeturn3search1turn3search5 Pelican‑class cases are certified to survive Category I ATA‑300 testing (1 m drops on all edges/corners, 160 kg stack). citeturn3search0turn3search4 Your consumer shell is thinner (2–3 mm vs. Pelican’s 4–5 mm polypropylene) and lacks the honeycomb ribs, so the foam becomes the shock absorber: you need at least 25 mm of firm PE or XLPE on every face to keep deceleration under 25 g, the threshold that research cites for PCB solder‑joint safety. citeturn0search2turn3search1

3.2  Water ingress

Airport ramps are often wet; Wales averages ~ 99 mm of rain in July with a shower on 13 days/month. citeturn4search1turn4search8 A typical ABS zipper track is not IP‑rated. A roll‑top sil‑nylon or PU dry‑bag inside the case is a tried‑and‑tested hack among one‑bag travellers for waterproofing. citeturn1search0 Two nested dry‑bags plus the hard shell give three barriers—enough for the 15‑minute apron exposure while bags move between terminal and hold.

3.3  Vibration

Even if the Ridge stays in the cabin, taxi‑out and landing produce 0.4 ‑ 0.7 g RMS in the overhead bins (Airbus A320 data). Foam blocks and Velcro wrap stop the GPU heat‑sink or PSU mass from “walking”. Reddit’s recent SFF travel thread reports a destroyed GPU when this was omitted. citeturn0search2

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4  What happens if the gate agent still pink‑tags it?

Because you already purchased checked luggage, the desk will simply re‑tag the PC bag as your paid hold item.

1. At the gate: hand the trolley to the ramp agent; it bypasses belt loaders and is placed last‑on/first‑off—a gentler ride than main‑hold bags.
2. In the hold: pressurised and typically 7 ‑ 25  °C on short‑haul Airbus flights, well within electronics limits. citeturn3search0
3. On arrival in Wales: ground showers are likely; the dry‑bag liner and zipper rain‑cover keep spray out during the 100 ‑ 200 m walk to the terminal.

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5  Night‑before packing checklist

✔	Task	Why
☐	Weigh the trolley ≤ 8 kg (GPU out if needed).	Eurowings/Aegean limit. citeturn2search1
☐	Measure full exterior ≤ 55 × 40 × 23 cm, including corner feet and handle.	Eurowings sizer. citeturn2search3
☐	25 – 30 mm closed‑cell foam on every wall, lid and base.	Keeps drop shock < 25 g. citeturn3search1turn3search4
☐	Ridge wrapped in anti‑static bag, then first dry‑bag; seal roll‑top.	Moisture & ESD barrier. citeturn1search3
☐	Second dry‑bag or rain‑cover over the foam cavity.	Redundant water seal. citeturn1search0
☐	GPU in padded sleeve inside personal item; bubble‑wrap the PCIe fingers.	Removes 1 ‑ 1.5 kg and biggest damage risk. citeturn0search2
☐	TSA 007 mini‑padlock on trolley zips; heavier lock on hold suitcase.	Allows inspection without damage.
☐	“Fragile – Electronics – Please keep upright” sticker on shell.	Ramp crews often oblige.

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6  Decision recap

• Stick with your padded cabin trolley. It can be made compliant and protective enough with the GPU removed and ≥ 25 mm foam.
• Plan emotionally for a gate check. If the agent weighs it or the overheads fill up, the PC goes in the hold—but your packing strategy already covers that scenario.
• Skip the €400 Pelican. Its only extra value now would be water‑resistance and drop‑certification; your dual dry‑bags and foam close most of that gap, and you’ve paid for a hold bag anyway.
• Order a made‑to‑measure flight case later if you will repeat this trip often; for this journey the improvised setup saves money and still keeps the Ridge safe.

With these adjustments you should sail through both sectors—and your Ridge will boot happily when you reach rainy Wales. Safe travels!Summary of your position

Because you already have (i) a semi‑rigid cabin roller that the Ridge will fit, (ii) time‑critical travel on 18 July with Aegean (Airbus A320‑family) outbound and Eurowings* inbound, and (iii) a paid checked‑bag allowance, the most robust, time‑feasible plan is:

1. Keep using the cheap cabin bag—but pack it so it can survive a forced gate‑check.
   • On Aegean Air bus aircraft the official “large cabin bag” limit is 56 × 45 × 25 cm (rather than 55 × 40 × 23 cm for their turboprops) – if your case is inside those figures the crew are unlikely to measure it citeturn0search5.
   • On Eurowings the allowance is 55 × 40 × 23 cm / 8 kg citeturn0search0, so you are very likely to have your bag weighed or pink‑tagged—especially if the Ridge plus foam tips 9‑10 kg.
2. Accept the possibility it will ride in the hold on either leg and pack to ATA‑300 Cat I standards (25–30 mm rigid foam all round) citeturn0search3.
3. Use the checked‑bag allowance you have paid for to move clothes and peripherals; that leaves the PC (in the cabin bag) the only heavy item likely to be weighed.
4. Add two nested dry‑bags inside the cabin shell to deal with Welsh July rain (∼ 99 mm average in Cardiff) and damp cargo holds citeturn2search0.

*(Your itinerary shows “Airwings”; current schedules suggest this is Eurowings—if it is a different carrier, look up its cabin rules but most European LCCs use the same 55 × 40 × 23 cm template.)

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1 Verify dimensions, weight and battery rules

	Your packed Ridge in cabin roller	Aegean (A320/321)	Eurowings (Basic fare)
Size limit	Measure! target ≤ 56 × 45 × 25 cm	56 × 45 × 25 cm citeturn0search5	55 × 40 × 23 cm citeturn0search0
Weight limit	≈ 9–10 kg (Ridge 4.3 kg net + components ≈ 5 kg) citeturn4search0	8 kg (Economy “Light”), 13 kg (Flex/Business) citeturn0search1	8 kg citeturn0search0

• Carry spare power‑banks or loose Li‑ion cells in your personal bag, not in the PC: IATA bans spare batteries in checked luggage and requires devices in the hold to be fully switched off citeturn3search0turn3search6.
• Use a TSA/Travel Sentry‑approved padlock in case the bag is security‑opened en‑route; non‑approved locks are cut off citeturn3search1turn3news20.

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2 Make the cheap case “hold‑proof”

2.1 Shock and crush protection

Airport sorters routinely drop bags 0.8–1 m; ground‑handling guidance lists peak shocks > 25 g and injury rates five times the UK industrial average citeturn5search0turn5search7. ATA‑300 Cat I testing assumes 25–30 mm of firm PE foam around fragile kit citeturn0search3. You have already lined the shell; double‑check that:

• The Ridge cannot shift laterally—fill gaps with closed‑cell off‑cuts, not soft bedding foam.
• The GPU mass is cross‑braced against the chassis walls (foam block under the PCIe bracket and a Velcro strap round the card); this is the component that most often breaks in drop tests citeturn0search2.

2.2 Moisture and ESD protection

Even pressurised holds can see humidity spikes; a nested IPX4+ roll‑top dry‑bag around the PC seals against condensation and rain on the ramp. Slide the chassis first into an anti‑static bag or wrap to prevent charge build‑up on the foam citeturn3search3.

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3 Boarding‑gate strategy

1. Outbound (Aegean Airbus)

   • If the flight is full, gate agents often tag every Light‑fare passenger’s cabin bag when bins fill (Aegean policy note) citeturn7view0.
   • Present the bag confidently; if tagged, remove valuables (NVMe drives, headset) and accept the free check‑in—your packing is already drop‑safe.

2. Return (Eurowings Basic)

   • Eurowings routinely weighs bags at boarding; any gram over 8 kg or cm over 40 cm width is sent to the hold with a fee unless you pre‑bought a “large cabin bag” citeturn0search0.
   • Because you have a paid 23 kg hold piece, simply accept the tag; no extra payment is due.

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4 Why a Pelican or custom case is still “nice‑to‑have” but not essential now

• A Pelican 1560+foam gives certified crush resistance and an IP67 seal, but it is 26.5 cm thick—3.5 cm over Eurowings’ depth and 1.5 cm over Aegean’s Airbus limit; it will be gate‑checked every time citeturn0search7.
• A bespoke 55 × 40 × 23 cm birch case would solve that, yet both NSP and Swanflight quote 15–25 working‑day lead times—even rush orders will miss 18 July unless they miraculously slot you in now citeturn0search1turn9search0.
• Given your secure foam blocking and the checked‑bag safety‑net, the marginal protection gain is not worth the extra €400 or the schedule risk.

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5 Last‑minute checklist (do these this week)

Task	Why
Weigh the packed cabin roller (bathroom scale) and note both 8 kg and 13 kg thresholds.	Know whether to expect a fee/hold check.
Insert a printed “inspection note” on top of the foam (“Custom‑packed computer—please reseal carefully”).	TSA/CT scanners may open the lid; a polite note often gets it re‑packed correctly citeturn3news20.
Photograph the interior before closing the dry‑bag and shell.	Evidence for any damage claim (airlines exclude most electronics, but travel insurance may not).
Move loose accessories (power cord, HDMI cable, mouse) to your clothes suitcase.	Prevents them puncturing foam in a drop.
Carry spare batteries & power‑banks in your personal item.	Mandatory under IATA DG rules citeturn3search0.

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6 Bottom line

Your current set‑up—cheap hard‑shell cabin roller, 25 mm foam, nested dry‑bags, GPU braced, plus a paid checked‑bag fallback—meets practical safety and airline rules for both journeys. Expect the PC to travel in the overhead on Aegean if space allows, and in the hold on Eurowings, but in either case the Ridge should arrive in rainy Wales unharmed.

You

Are there any hard shell tourist bags with water-sealed zipper that can fit my requirements ?

ChatGPT

Short answer – no. Every mainstream “tourist”‑style cabin spinner that (a) has a water‑repellent or water‑sealed zip and (b) stays inside the joint Aegean/Eurowings box of 55 × 40 × 23 cm is simply too narrow inside to accommodate the Fractal Design Ridge, whose vertical‑packing footprint is 374 mm (L) × 395 mm (D) × 110 mm (H) citeturn7view0. Even the very widest premium models (RIMOWA Cabin, Delsey Securitime Zip, Thule Revolve, Aer Carry‑On, Away Carry‑On, etc.) top out at 40 cm external width, which translates to roughly 37–38 cm of clear interior once you subtract the double‑wall, wheel wells and frame—3 cm short before you add the 25 mm of shock foam you said you need. A custom flight case or a checked Pelican‑class box remains the only way to transport the Ridge with proper padding and stay weather‑proof.

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1 Your hard constraints

Requirement	Figure	Source
Ridge depth when packed upright	395 mm	citeturn7view0
Aegean Airbus cabin box	56 × 45 × 25 cm	citeturn13search0
Eurowings large‑cabin box	55 × 40 × 23 cm	citeturn12search0
Typical polycarbonate shell thickness	≈0.8 mm per skin (≈18 mm lost across shell + wheel arches + lining)	citeturn11search4

To fit the Ridge plus 25 mm of foam front & back you would need ≥ 445 mm of internal width—utterly incompatible with any case that is only 400 mm wide on the outside.

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2 What the widest water‑sealed cabin suitcases actually offer

Brand & model (55 cm size)	External (H × W × D)	Zip spec	Notes on water protection	Why it still fails
RIMOWA Original/Essential/Distinct Cabin	55 × 40 × 23 cm citeturn5view0	Reverse‑coil, PU‑coated; water‑resistant front pocket on “Sleeve” version citeturn9search0	Keeps out rain spray but not immersion	Internal width ≈ 37 cm (<395 mm)
Delsey Securitime Zip 55 cm	55 × 36 × 23 cm citeturn1search4	Patented SECURITECH 2 coil‑in‑PU zip (water‑repellent & 3× puncture‑resistant) citeturn3search1	Flap and PU film shed showers	Width external 36 cm → internal ≈ 33 cm
Thule Revolve Global Carry‑On	55 × 35 × 23 cm citeturn10view0	“Puncture‑resistant zipper backed by a rigid frame” citeturn10view0	Zip sits in a rain gutter	Only 35 cm wide outside
Aer Carry‑On	55 × 35 × 23 cm citeturn1search7	YKK AquaGuard® PU‑laminated zip citeturn0search4	Rated IPX4 splash‑proof	35 cm external width
Away Carry‑On	54 × 34.8 × 21.3 cm citeturn11search7	Reverse‑coil “water‑resistant” zip	Light rain only	34.8 cm outside width

Geometry check – even the RIMOWA at 40 cm outside width has < 38 cm inside; your Ridge needs 39.5 cm bare and 44.5 cm with foam, so it cannot physically turn inside these shells.

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3 Why no tourist spinner can be made wider

• All IATA‑class 55 cm suitcases share the 40 cm maximum width; exceeding it trips the Eurowings sizer immediately citeturn12search0.
• Wheel‑box recesses, corner guards, and the telescopic‑handle tray consume ≈20–25 mm of the nominal width, leaving ≤ 38 cm usable.
• Polycarbonate shells flex, so manufacturers must keep the rim nested under the zip tape; widening the box would also require a deeper spine, pushing depth beyond 23 cm and breaking the limit that way.

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4 What would work if you insist on a water‑tight hard shell

1. Pelican Air 1615 or Nanuk 960 – injection‑moulded IP67 cases with O‑ring and purge‑valve. Internal width 428 mm (Pelican), 424 mm (Nanuk) easily fits the Ridge plus foam, and their PowerClaw latches are watertight. Both are, however, 76–81 cm long and must be checked.
2. Custom cabin flight case – ask Swanflight or NSP for a 55 × 40 × 23 cm birch+aluminium build, then specify a continuous Penn‑Elcom 0549 gasketed aluminium tongue‑and‑groove profile and butterfly latches; this gives better rain sealing than any tourist zipper and meets cabin rules—at the cost of a 3‑week lead time.
3. Soft waterproof duffel (e.g. Patagonia Stormsurge 45 L) inside your cheap roller – your existing nested dry‑bag method already emulates this and is the lightest option.

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5 Practical takeaway

• Every off‑the‑shelf hardside carry‑on with a water‑repellent zipper is at least 20 mm too narrow inside for the Ridge, making the search moot.
• Switching to a checked, IP67‑rated moulded case or commissioning a bespoke cabin flight case are the only ways to combine real water sealing with the PC’s footprint.
• Given your timetable and ticket, your current dry‑bag‑inside‑roller solution remains the only realistic path for this trip; just make sure you hit the 8 kg Eurowings weight cap and keep the GPU in your personal item.

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Sources

1. Ridge product sheet (dims) citeturn7view0
2. Aegean Airbus cabin limit citeturn13search0
3. Eurowings cabin limit citeturn12search0
4. RIMOWA Cabin size & weight citeturn5view0
5. RIMOWA “Sleeve” water‑resistant zip pocket citeturn9search0
6. Delsey Securitime Zip dimensions citeturn1search4
7. Delsey SECURITECH zip description citeturn3search1
8. Thule Revolve specs + puncture‑resistant zip citeturn10view0
9. Aer Carry‑On dimensions citeturn1search7
10. YKK AquaGuard water‑repellent zip citeturn0search4
11. Away Carry‑On dimensions & reverse‑coil zip citeturn11search7
12. Typical polycarbonate shell thickness citeturn11search4

You

The samsonite upscape is 55 x 40 x 20

https://www.samsonite.gr/el-gr/valitses-taksidiou-kampinas/upscape-931132

ChatGPT

Key point: although the Samsonite Upscape Spinner 55 × 40 × 20 cm does meet both Aegean‑Airbus (56 × 45 × 25 cm) and Eurowings (55 × 40 × 23 cm) cabin‑size rules, its internal width is only ≈ 37 cm once the double walls and wheel housings are counted. That leaves no way to fit the Fractal Design Ridge’s 39.5 cm depth—let alone the 25 mm of shock‑absorbing foam you said you need—so the Ridge will not fit in an Upscape without removing the PC’s side panels or foregoing any meaningful padding. The Upscape’s zip is water‑repellent rather than fully waterproof, and the packed weight will still nudge the Eurowings/Aegean 8 kg cap. Bottom line: the Upscape is an excellent tourist spinner, but it cannot solve the Ridge‑in‑cabin problem.

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1  External vs. internal geometry

Item	External size	Internal size (usable)	Comment
Samsonite Upscape 55 cm	55 × 40 × 20 cm; 55 × 40 × 23 cm expanded citeturn3view0turn17view0	18.5″ × 14.5″ × 7.5″ → 49 × 37 × 19 cm citeturn11view0turn13search0	~37 cm clear width
Fractal Ridge (vertical)	374 × 395 × 110 mm citeturn12search1	Needs ≥ 40 mm foam front‑and‑back → ≥ 445 mm total width	Won’t fit

Even if you ran the case without any foam at all, the Ridge’s 395 mm depth is ≈ 25 mm wider than the Upscape’s interior, so the lid will not close.

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2  Water protection

• Upscape uses a PU‑laminated, reverse‑coil zipper marketed as water‑repellent citeturn15view0.
• “Water‑repellent” means it sheds rain spray, but the teeth are still stitched into fabric tape—there is no continuous rubber gasket like on a Pelican/Nanuk IP67 case.
• In a baggage‑hold puddle or a Welsh downpour the nested dry‑bag you already plan to use gives better protection.

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3  Weight check

Component	Mass
Upscape 55 cm spinner	2.3 kg citeturn3view0
Ridge chassis + components	≈ 5.5 kg citeturn12search1
25 mm PE foam cradle	≈ 0.6 kg (0.04 kg/L)

Total ≈ 8.4 kg – already over Eurowings’ and Aegean’s 8 kg economy cap, even with the GPU removed. If you leave the GPU inside the Ridge add another 1–1.5 kg.

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4  Cabin‑bag limits you still have to satisfy

Airline & aircraft	Max cabin bag	Weight cap
Aegean – Airbus fleet	56 × 45 × 25 cm citeturn16search0	8 kg (Eco) / 13 kg (Flex/Biz)
Eurowings (BASIC fare)	55 × 40 × 23 cm, 1 piece citeturn16search1	8 kg

The Upscape is size‑legal, but your loaded weight is not—so you would almost certainly be forced to gate‑check it on both carriers.

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5  What would have to change for the Upscape to work

1. Remove each Ridge side panel (16 mm each) and wrap the bare chassis in thin fleece only.
2. Accept zero foam on front and rear faces—leaving the GPU, riser card and PSU exposed to 20–30 g shocks.
3. Carry the GPU, PSU and drives in your under‑seat bag to drop the Ridge depth under 370 mm.
4. Hope the zipper flap survives any ramp spray, because there is no gasket.

Most builders would call that an unacceptable risk for a €1 000‑plus SFF system.

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6  Viable alternatives you still have

Option	Fits Ridge + foam?	Cabin‑legal on both airlines?	Lead‑time
Pelican 1560	Yes	No – must be checked	1 – 2 days
Custom 55 × 40 × 23 cm birch flight case	Yes	Yes	2 – 3 weeks (rush possible)
Your current cheap hard shell + 2 dry‑bags + 25 mm foam	Yes	Maybe (weight 7–9 kg) – but you already paid for checked bag	Ready now

Given your deadline, the last option is still the only practical one that both protects the PC and is in your hands before 18 July.

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Take‑away

The Samsonite Upscape is a tough, splash‑resistant tourist spinner, but it is physically too narrow inside for the Ridge (by ≈ 25 mm) and offers no real water seal. It therefore does not solve the cabin‑carry dilemma; stick with the foam‑lined dry‑bag approach for this trip, and consider commissioning a made‑to‑measure 55 × 40 × 23 cm flight case for future travel.

You

My ridge is actually 355 x 375. I just measured it.

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Your fresh tape-measure numbers ( 355 mm × 375 mm for the Ridge’s footprint in its “tower” orientation) do shrink the target, but they don’t shrink it enough to squeeze the PC—plus the 20-25 mm of firm foam you wanted for a 1 m drop—into any mainstream water-repellent-zip tourist spinner that still fits the joint 55 × 40 × 23 cm / 8 kg cabin box used by Aegean and Eurowings.

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What the new size really buys you

The factory spec (374 × 395 mm) citeturn0search2 was already a tight fit; your own 355 × 375 mm measurement trims ≈ 20 mm off each side. Even so, once you allow a minimal 10 mm foam layer front-and-back the packed rectangle grows to 375 × 395 mm. That still needs ≥ 425 mm of clear internal width—well beyond what any 40 cm-wide carry-on shell can offer.

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Re-testing the Samsonite Upscape 55 × 40 × 20 cm

Figure	Source	Comment
External size 55 × 40 × 20 cm / 55 × 40 × 23 cm (expanded)	citeturn0search0turn5search2	Cabin-legal on both airlines.
Internal cavity 49 × 37 × 20 cm	citeturn5search1turn5search6	Usable width is 370 mm.
Bag weight 2.3 kg	citeturn0search1	Adds to the 8 kg limit.
Zip = PU-laminated reverse-coil (water-repellent, not watertight)	citeturn9search0	Sheds rain but won’t survive a puddle dunk.

Does the Ridge fit?

• Straight in: No—375 mm chassis depth > 370 mm interior.
• Diagonal: A 355 × 375 mm rectangle will mathematically jam into a 490 × 370 mm box at ~88° yaw, leaving < 4 mm clearance on one corner. There is zero space for foam and the GPU riser faces the lid.
• Weight: Ridge (≈5.5 kg) + Upscape (2.3 kg) + even 5 mm neoprene = ≥ 8 kg, already at Eurowings/Aegean Economy cap citeturn0search4turn0search3.

Result: the Upscape only just accepts the bare chassis, and only if you sacrifice the very shock protection and rain redundancy you told me you need. One bad ramp drop would be lethal.

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Survey of the other “40 cm wide” water-repellent spinners

Model (55 cm cabin)	External (W)	Nominal water seal	Internal width	Why it still fails
RIMOWA Original Cabin	40 cm	aluminium tongue-and-groove + gaskets	≈ 37 cm citeturn8search4	37 cm < 375 mm chassis
RIMOWA Essential / Lite	40 / 37 cm	PU-coated reverse coil	35-37 cm citeturn8search6	Still too narrow
Delsey Securitime Zip	36 cm	SECURITECH® water-repellent zip	≈ 33 cm citeturn1search4	Far too narrow
Thule Revolve 55	35 cm	recessed gutter zip	≈ 32 cm citeturn3search1	Far too narrow

All of them give up at roughly 37 cm of internal width because the wheels, corner posts and double wall eat 25-30 mm of the 40 cm allowance. Your Ridge, even in its slimmer guise, still needs 42-43 cm once padding is included.

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Why the geometry ceiling is hard

The cabin-bag template is fixed at 40 cm for most European carriers; tourist suitcases hide their wheels inside that box, so designers literally cannot widen the cavity without breaking the sizer citeturn0search4. Custom flight-case builders avoid the wheels-inside problem by recessing 50 mm skate rollers into the base of a 55 × 40 × 23 cm frame, buying the extra centimetres you need—at the cost of a 3-week lead time.

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Practical options right now

1. Stay with your current hard shell + 25 mm PE foam + dual dry-bags.

   • You already own it; you already paid for a checked bag.
   • GPU removed to your under-seat bag drops the trolley to 7 kg, so it might clear an Aegean spot-check and will be allowed in Eurowings’ hold at no extra fee.
   • Foam meets the ATA-300 Cat I 1-m-drop guideline citeturn0search5 and the dry-bag beats any tourist zip in a ramp shower.

2. Pelican 1560 (or 1535 Air) as checked luggage.

   • Internal width 380 mm (1535) or 455 mm (1560) is ample for Ridge citeturn0search0.
   • IP67 gasket and purge valve give true water-tightness.
   • Always goes in the hold—size failure guaranteed.

3. Rush a 55 × 40 × 23 cm birch flight case.

   • Builders like Swanflight advertise gasketed aluminium tongue-and-groove and recessed wheels, solving both space and water issues.
   • Rush fees can halve the 15–20-day queue, but still unlikely before 18 July citeturn0search1.

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Recommendation

Your updated measurements shave valuable millimetres, but they don’t change the fundamental physics: every cabin-legal tourist spinner tops out at ~37 cm of usable width, and that is not enough once you add the foam that keeps a desktop PC alive through airport drops. Unless you are willing to run the Ridge bare inside the Upscape (a gamble with a € £ $-worth GPU inside), the safest plan for this trip is still:

• Use the foam-lined dry-bag setup you already have.
• Accept a gate-check if it happens; your packing is drop-safe.
• Budget for a purpose-built 55 × 40 × 23 cm flight case for future journeys where you must keep the system in the overhead.

That way the PC arrives dry and intact, and you avoid spending another €400 on luggage that solves only part of the problem.

You

can you find a dry bag that can fit a 375 x 360 x 115 case?

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Quick pick - the three off-the-shelf dry bags that actually swallow a 375 × 360 × 115 mm Ridge (plus 5 - 20 mm of protective foam) are:

Bag (litres)	Internal opening / “flat” width*	Depth / diameter*	Height*	Notes
Watershed Largo Tote 25 L	15 in ≈ 38 cm citeturn14search1	6 in ≈ 15 cm citeturn14search1	18 in ≈ 46 cm citeturn14search1	Rectangular Zip-Dry® seal (IP-68) keeps spray and brief dunking out; the most compact choice.
SealLine Pro Dry Pack 70 L	17.5 in ≈ 44.5 cm citeturn17view0	9 in ≈ 23 cm citeturn17view0	27 in ≈ 69 cm citeturn17view0	Cylindrical roll-top; plenty of spare volume, cushy backpack harness detaches for air travel.
NRS Bill’s Bag 65 L	Ø 14 in ≈ 36 cm cylinder citeturn10view0	14 in ≈ 36 cm	24 in ≈ 61 cm citeturn10view0	The classic river “barrel”—stretchy coated fabric just takes the Ridge on the diagonal with minimal foam.

* Manufacturer dimensions when the bag is rolled/sealed and lying flat. Fabric dry bags flex, so internal width is typically 1–2 cm more than the published figure.

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Why these three work when most 20- to 40-L “tourist” sacks don’t

• Your 375 mm length (along the Ridge’s aluminium spine) sets the height requirement—every candidate above is ≥ 460 mm tall sealed, so the PC drops straight in.
• The 360 mm depth (motherboard I/O → GPU fan grille) is the killer metric: you need at least 360 mm of slack across the mouth or the cylindrical diameter.
  • Watershed Largo’s 380 mm flat width clears it with a couple of millimetres to spare.
  • SealLine Pro’s 445 mm width leaves room for 10- 15 mm PE foam fore and aft.
  • NRS Bill’s Bag has a 360 mm diameter; if you slip the Ridge in diagonally it fits inside the 381 mm internal circle with ~8 mm margin.
• The 115 mm thickness is trivial for any of the three (all are ≥ 150 mm deep).

Most roll-top dry sacks marketed for travellers (Sea to Summit Big River 35 L, Ortlieb Rack-Pack 31 L, etc.) top out at 31 cm internal diameter—good for sleeping bags, not for a small-form-factor PC. Even larger river duffels like the Sea-to-Summit Hydraulic 65 L list only 33 cm flat width citeturn12view0, which still pinches the Ridge’s 360 mm edge.

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Fit & protection notes for each bag

1 Watershed Largo Tote 25 L

• IP-68 Zip-Dry® closure seals tighter than a roll-top and is fast for TSA inspection.
• Slide the Ridge in side-first, then roll a 5 mm closed-cell foam sheet round the long edges; use bubble-pack on the lid side only.
• With PC + light foam the tote weighs ≈ 7 kg—inside Aegean/Eurowings 8 kg if you keep the GPU in your personal item.

2 SealLine Pro Dry Pack 70 L

• Burly 600 D fabric and removable harness make it the safest if the bag is ever gate-checked.
• Use 25 mm PE foam panels front and back; there’s still space for cables or a slim keyboard alongside the Ridge.
• Bag alone is 2.2 kg citeturn8search1; Ridge + foam brings you to ~8.2 kg—borderline, so weigh before the Eurowings leg.

3 NRS Bill’s Bag 65 L

• Cheapest and widely stocked in Europe; 21 oz TobaTex has decent abrasion resistance.
• Needs the PC inserted on the diagonal to exploit the 36 cm diameter; limits you to thin (10 mm) foam corners rather than full sheets.
• Cylinder shape rolls in the overhead locker—strap it down with the bag’s four compression straps during flight.

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Buying tips & quick links

Where to find	Current price range*
Watershed Largo Tote – NRS, Backcountry, CampSaver	US$120–150 citeturn14search3
SealLine Pro Dry Pack 70 L – Amazon, paddle-sport shops	US$265–325 citeturn17view0
NRS Bill’s Bag 65 L – NRS direct	US$180 citeturn10view0

*Prices pulled from retailer listings in July 2025; EU shops typically match the USD figure in € after VAT.

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Packing checklist (applies to any of the three)

1. Wrap the Ridge in an anti-static bag before sliding into the dry bag—prevents ESD from foam friction.
2. Add closed-cell foam where the GPU and PSU mass sits; even 10 mm strips stop point loads in a 1 m drop.
3. Expel excess air, then roll/zip the closure fully—this keeps the package compact and easier to fit inside your hard-shell roller.
4. Label the outer suitcase Fragile – Electronics so ramp staff avoid stacking heavy luggage on top.
5. Keep spare lithium batteries in your personal item to satisfy IATA rules.

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Bottom line

Any of the three bags above will give you a true water-tight layer and the mouth width to accept a 375 × 360 × 115 mm Ridge—with the SealLine Pro offering the widest margin for shock-padding, the Watershed Largo being the most space-efficient, and the NRS Bill’s Bag delivering a budget-friendly halfway house.

You

Which style is better for a SFF Ridge pc? It’s meant to be tourable, go to live shows etc

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**TL;DR – For a single Fractal Design Ridge that has to survive vans, baggage belts and festival stages, choose a top–opening “road trunk” with a shallow lid (style A) and recessed wheels.
It gives the cleanest foam cradle, the lowest parts count, and the quickest access when you need to pull the PC out or put it straight on a table.
Pick the front-opening or front & back-lid styles (D or F) only if you plan to run the Ridge while it stays inside the case on show days; they add weight, hardware and cost but don’t improve protection.

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1 What matters for a tourable SFF PC

Requirement	Why it matters on the road
Crush & drop protection (25 mm PE foam all round)	ATA-300 Cat-I spec assumes 0.9–1 m drops and 20 kg stacking citeturn0search0
Quick load-out	Club change-overs are < 15 min; you want one lid, one lift citeturn2search2
Keep weight down	Every extra hinge, catch or drawer eats payload; most airline/van crews charge > 23 kg citeturn3search3
Minimal openings	More seams → more water & dust paths; rain-soaked festival ramps are common citeturn7view0

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2 How each style scores against those needs

Style	Mechanics	Pros for a Ridge PC	Cons / gotchas
A Shallow lid (road trunk)	80 % base / 20 % lid	Single hinge line; lid light, opens clear of venue floor. Easy to pad base; PC lifts straight out.	You must lift the PC out to use it.
B 50 / 50 lid	Case splits equally	Lid & base both deep – good for very tall gear.	Adds 1 kg+ hardware; foam must be in two halves; more to go wrong on drops citeturn0search1.
C Shallow base	20 % base / 80 % lid	Lets you leave gear in the lid while operating (common for mixers) citeturn5search5.	Ridge would hang in lid; offers little crush depth underneath; awkward to carry upright.
D Front-opening (single door)	Upright ‘cabinet’ door	You can cable the PC and run it inside the case; handy if it’s part of a playback rack.	Extra door frame, slam catches and edge extrusion ≈ +1.5 kg and +€60 citeturn4search4.
E Clamshell / split-lid	Two long hinges	Opens flat like a suitcase; complete access.	Twice the hinges, twice the gaskets; weakest style in fork-lift puncture tests citeturn0search8.
F Front & back lids (rack style)	Two doors	Perfect if Ridge is rack-mounted with rear I/O.	You lose 80 mm in overall length to the two removable lids and padding citeturn4search0.
G 3-lid / triple door	Top + both ends	Built for cable looms & lighting desks – massive overkill here.	Heavy, costly, complex.
H Wardrobe / vertical split	Two tall side doors	For guitars & costumes, not electronics.	Offers no shock isolation in the upright axis.

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3 Why “shallow lid” is the sweet spot

• Strength & simplicity – fewer hinges and latches mean fewer failure points and more internal volume for foam citeturn10search0.
• Load height – with a 20 mm lid the Ridge sits only ~30 mm below the rim, so you don’t have to reach deep to lift it out.
• Weight – a shallow lid road trunk of 7 mm birch, 25 mm foam and two Penn-Elcom 1730 recessed handles comes in at ≈ 7 kg empty, versus 8–9 kg for a 50/50 or front-door build of the same footprint citeturn3search0.
• Ingress resistance – one gasketed joint (the top) is easier to keep splash-proof than three or four joints found on clamshell or rack styles citeturn9search0.

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4 When to pick the front-door styles instead

Choose D (Front-opening) or F (Front & back) only if:

1. The Ridge is wired permanently inside a larger AV rig and you need to reach the power button / USB without unpacking; or
2. You expect to roll the case under a desk and use it as an on-stage shield.

In those scenarios the extra mass and hardware make sense; otherwise they’re just baggage handlers’ ammunition.

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5 Spec tips for the shallow-lid build

Area	Recommended spec
Foam cradle	25 mm PE40 each face, CNC-cut silhouette; two Velcro straps over GPU spine to kill micro-vibration citeturn0search1
Wheels	50 mm recessed edge casters + retractable pull-handle keep the case inside 55 × 40 × 23 cm if you ever need cabin carry citeturn0search9
Lid seal	Continuous 0549 tongue-and-groove with closed-cell gasket for IP-X4 splash rating citeturn3search3
Hardware	Medium Penn-Elcom butterfly latches (T5200), two spring handles, one hinged lid stay.
Finish	Dark HPL laminate hides scrapes; add corner stack dishes so you can pile other trunks on top safely.

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6 Bottom line

For a one-off SFF Ridge that has to be light, fast and strong, a top-opening road trunk with a shallow lid (Style A) is the most tour-proof choice.
Upgrade to a front-door variant only if the PC must stay cabled inside the case during shows; otherwise the added bulk and cost give you nothing but heavier load-ins.

You

Are there wide waterproof backpacks that could fit it so I could carry it on my back ?

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In one sentence: the only fully water-proof (IPX6-to-submersible) backpacks that are wide enough for a Ridge ( ≈ 375 mm × 355 mm × 115 mm) are heavy-duty “dry-pack” models such as the Watershed Westwater 65 L, SealLine Boundary Pack 65 L, and Sea to Summit Hydraulic Dry Pack 90 L; each gives ≥ 42 cm of interior width, a roll-top or Zip-Dry® seal, and detachable harness so you can carry the PC on your back while keeping it bone-dry in tour buses, rain-soaked load-ins and baggage holds.

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1 Check the critical numbers first

Item	Width (mm)	Length/Height (mm)	Depth (mm)
Ridge case (horizontal)	375	360	115	citeturn0search0
Foam you said you want	+20 mm each face	–	+20 mm each face
Minimum backpack interior	≥ 415 mm	≥ 400 mm	≥ 155 mm

Most “urban” waterproof roll-tops (Ortlieb Atrack 45 L, Osprey Transporter 30 L, etc.) max out at 32–35 cm internal width and simply cannot swallow the Ridge plus even 10 mm of foam. citeturn0search8turn0search5

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2 Backpacks that do fit

### Watershed Westwater 65 L

• Inside (rolled): 24.5″ H × 17.75″ W × 10.5″ D → 62 × 45 × 27 cm citeturn0search0turn0search8
• Seal: Zip-Dry® zipper (tested watertight to 100 m) citeturn0search1
• Carry: removable padded shoulder & waist straps; 1.3 kg empty citeturn0search8

Fit verdict: 45 cm width gives ~30 mm spare on each side after 20 mm foam—perfect shock space.
Touring plus: can strip the harness and lash the bag flat in a van rack.
Watch-out: stiff Zip-Dry needs silicone lube every few weeks and the bag is boxy on the back.

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### SealLine Boundary Pack 65 L

• Inside (rolled): 25″ H × 17.5″ W × 9″ D → 63 × 44.5 × 23 cm citeturn0search2
• Seal: dual-strip roll-top, IPX7 when rolled 3×.
• Carry: fixed yoke-style harness, removable hip-belt; 1.5 kg.

Fit verdict: 44.5 cm flat width = 25 mm foam + Ridge with just a hair of breathing room.
Touring plus: lighter than the Westwater and cheaper; whitewater-grade vinyl shrugs road grime.
Watch-out: roll-top adds 5–7 cm to height when you complete three rolls—check overhead-locker clearance.

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### Sea to Summit Hydraulic Dry Pack 90 L

• Inside (oval base): 42 cm W × 30 cm D; 100 cm tall (rolled) citeturn0search6turn0search1
• Seal: TIZip® submersible zipper (Pro version) or roll-top (standard).
• Carry: quick-release alloy frame, ventilated straps; 1.9 kg.

Fit verdict: 42 cm width leaves ~12 mm foam each side—acceptable if you use firm PE-40.
Touring plus: aluminium back-panel spreads load; bag squashes into tour bus bays easily.
Watch-out: zips are smoother than Watershed’s but the 90 L bag is tall—better for checked-bag duty than cabin carry.

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3 Why the usual “waterproof” day-packs fail

Model	Published width	Result
Ortlieb Atrack 45 L	32 cm citeturn0search3	✖ > 4 cm too narrow
Watershed Animas 40 L	14″ = 35.5 cm citeturn0search1	✖ still narrow
Osprey Transporter Roll-Top 30 L	34 cm citeturn0search5	✖ narrow & only IPX5
OverBoard Classic 45 L	33 cm W, 28 cm D citeturn0search6	✖ narrow; depth fine

All of them are designed around laptop widths (30–34 cm) rather than the 37–38 cm your Ridge demands.

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4 Packing & carry tips

1. Foam cradle: 20–25 mm PE-40 on every face keeps drop shocks < 25 g (ATA-300 Cat-I target) citeturn0search2.
2. Anti-static sleeve: slip the PC into a motherboard bag before it goes in the pack to avoid ESD on dry winter stages.
3. Cable pocket: stash PSU cord, HDMI and keyboard cable in a top stuff-sack so they don’t gouge the chassis.
4. Check weight: Ridge (≈ 5.5 kg) + Westwater (1.3 kg) + foam (0.7 kg) ≈ 7.5 kg—inside the 8 kg cabin limit you quoted for Aegean/Eurowings.
5. Label the outside “Fragile – Electronics” and loosen compression straps before gate check; Zip-Dry and TIZip seals can distort if over-cinched.

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5 Bottom line

If you want true waterproofing and enough internal width for the Ridge plus protective foam, look at Watershed Westwater 65 L, SealLine Boundary 65 L, or, for extra margin, Sea to Summit Hydraulic 90 L.
Cheaper urban roll-tops and camera packs are all too narrow. Add a 20 mm foam cradle inside whichever dry-pack you choose, and you’ll be able to shoulder-carry the PC through rain-lashing load-ins and still meet airline cabin-bag weight rules.

You

Would a 6.5 plywood with 17mm foam case from NPS be enough protection ?

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**Short answer – 6.5 mm birch laminate is the industry-standard wall for professional flight-cases and is strong enough for a 5-6 kg SFF PC, but a single layer of 17 mm closed-cell PE foam is on the thin side for a 1 - metre / 25 g ATA-300 Cat-I drop.
If you can live with “good-enough” protection (club vans, short-haul baggage belts, light stacking) the spec NSP proposes will work, especially if you remove or brace the GPU.
If you want text-book ATA-Cat I survivability—i.e. safe after 100 air-cargo round-trips—ask for 25 – 30 mm foam or a double-layer (17 + 10 mm) cradle and keep the 6.5 mm panels.

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1 What the standards actually demand

Requirement	ATA-300 Cat-I figure	Why it matters
Drop test	1 m on all faces/edges/corners. Inner cargo must not “bottom-out” & foam must deflect ≥ 60 % of its thickness. citeturn0search0
Stacking	135 kg (300 lb) for 24 h. citeturn0search3
Cycles	Survive ≥ 100 round trips with no structural failure. citeturn0search3

A Ridge build (~ 5.5 kg gross) is classed as a “delicate electronic article” under Chapter 2 of the spec.
The dynamic cushioning curves used by packaging engineers show that a 4-6 kg load typically needs 25 ± 5 mm of PE40 (45 kg m-3) foam to keep peak deceleration < 25 g in a 1 m drop. citeturn0search6turn0search0

Impact-lab data confirm that thicker EPE/EPE foams halve the g-force at the same drop height; 15 mm versus 25 mm can be the difference between 40 g and 25 g for a 5 kg load. citeturn0search5turn1search5

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2 Is 6–7 mm birch strong enough?

• Virtually every European road-case builder (NSP, ProCase, Santosom, Extreme-Case, OEM Kiosks) uses 7 mm birch ply for “standard line” cables, amps and computer trunks; 10 mm is reserved for > 25 kg loads. citeturn0search0turn0search1turn0search2
• 6.5 mm panels bonded to a phenolic laminate have a flexural strength > 40 MPa—ample margin vs. the 135 kg stack limit when braced by 30×30 mm aluminium extrusions. citeturn0search9
• So the shell is fine; the real question is how much shock the electronics see.

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3 Is 17 mm foam enough?

Foam set-up	Peak g for 5 kg load, 1 m drop*	Passes Cat-I?
17 mm PE-40	≈ 30 – 35 g (borderline)	❓
25 mm PE-40	≈ 22 – 26 g	✅
2 × 17 mm (cross-laminated)	≈ 20 g	✅

*Values interpolated from Zotefoams cushioning curves and MDPI impact-thickness study. citeturn0search6turn0search5

Take-away: 17 mm can work if you:

• use a high-density (≥ 40 kg m-3) PE foam sheet,
• brace the GPU and PSU mass with extra corner blocks, and
• accept that a worst-case 1 m belt tumble might spike 30 g—usually OK for modern solder joints but not guaranteed. citeturn0search9turn0search2

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4 Practical tweaks if you stick with 17 mm

1. Add loose “float” pads: glue 5 – 8 mm sacrificial PE squares in the lid and base; they crush first and buy you another 4-6 g of margin.
2. Remove the GPU for flights and carry it in your personal item; eliminates the heaviest cantilever inside the Ridge.
3. Velcro wrap the chassis to the base foam so micro-vibrations on stage don’t work the riser and M.2 cards loose.
4. Specify convoluted (egg-crate) foam in the lid even if the base is flat; the extra air gap ensures the PC never touches bare plywood when the case is upside-down.

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5 When you should upgrade to 25 mm foam or 9 mm ply

Scenario	Why a heavier spec is safer
Shipping the PC ahead by road freight where cases can see 1.5 m tail-gate drops. citeturn0search3	17 mm may bottom-out.
Stacked festival pallets (> 200 kg on top).	9 mm ply resists edge bowing better. citeturn0search9
Airline check-in without a Pelican-style outer.	Ground crews treat trunks like parcels; the extra foam is cheap insurance.

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6 Putting it all together

• Shell: 6.5 mm birch + Penn-Elcom aluminium gives you “pro-tour” strength—keep it. citeturn0search0turn0search1
• Foam: 17 mm is workable but not optimal. For true ATA-300 Cat-I confidence, push NSP to 25 mm—or at least a 17 mm base plus a 10 mm floating lid pad.
• Weight impact: +8 mm of PE-40 on five faces adds just ≈ 0.5 kg, still leaving your Ridge package under the 13 kg Aegean Flex / 23 kg BA cabin caps. citeturn0search4
• Cost impact: NSP typically charge < £25 extra for the thicker foam on a case this size.

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Bottom line

A 6.5 mm NSP flight case lined with 17 mm high-density PE foam will protect the Ridge through everyday van runs and the odd airline gate-check, but if you want no-worries compliance with the full ATA-300 Cat-I drop & stack tests, ask for 25 mm foam (or 17 + 10 mm layers) before they build it. The shell can stay exactly as specced.

You

I managed to order a case that fits airline specs, but with 17mm foam. However it weighs 11kg. Can you see the catch 22 ?

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Your custom flight-case has landed you in a perfect catch-22:

It is small enough to satisfy every airline sizer, yet—at 11 kg once the Ridge is inside—it already blows through the 8 kg carry-on weight cap that both Aegean and Eurowings enforce. citeturn1search3turn1search1

That means gate agents are almost certain to pink-tag it for the hold, where the 17 mm foam lining you specified was never meant to absorb a full 1 m belt drop. Below is why that happens, how much risk you’re really running, and the two practical ways to escape the loop.

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1 Why the numbers don’t add up

Item	Typical mass	Notes
Ridge build (GPU + SFX PSU + M.2 drives)	≈ 5.5 kg citeturn0search0
6.5 mm birch flight-case shell (55 × 40 × 23 cm, hardware, wheels)	5 – 6 kg – see real-world cases at 6.6 kg, 9 kg, 11.8 kg citeturn1search4turn1search5turn1search6
17 mm PE foam cradle	~0.7 kg
Total carry-on weight	11 - 12 kg

Airline limits

• Aegean & Eurowings: one large cabin bag ≤ 8 kg and ≤ 55 × 40 × 23 cm in Economy/Basic fares citeturn1search3turn1search1.
• Both are strict on weight—multiple flyers report even a 1 kg excess being gate-checked citeturn1search6.

Your case will fit the sizer, but the scale will kill it.

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2 Why 17 mm foam is borderline in the hold

ATA-300 Cat I testing (the benchmark flight-case builders cite) assumes:

• 1 m drops on every face and
• Foam deflection ≥ 60 % of its thickness so cargo never “bottoms out”. citeturn1search5

Packaging-lab curves show a 5–6 kg electronic load needs ≈ 25 mm of PE-40 to keep peak shock below 25 g; 17 mm typically lets 30 - 35 g through citeturn0search6. Electronics survive that most of the time, but it’s no longer “spec compliant.”

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3 Your options

A — Make it genuinely carry-on

Tactic	Weight saved
Pop the GPU & PSU out and carry them in your under-seat personal bag	1.2 - 1.8 kg
Swap the steel corner balls for lighter Ø25 mm aluminium	0.2 kg
Replace lid butterfly catches with drawbolts	0.15 kg
Drill lightening holes in foam under the PSU cavity	0.1 kg

If you shave 2.5 kg you come in at ~8.5 kg. That’s still risky, but anecdotal reports say Aegean sometimes waves through 8.3 - 8.5 kg if the bag looks compact. Any heavier and the gate tag is almost certain.

B — Accept it will be checked and upgrade protection

1. Add a 10 mm sacrificial PE topper in the lid and base (cheap and only +0.25 kg).
2. Velcro-wrap the Ridge to the base foam so nothing shifts if the case lands upside-down.
3. Tuck the whole PC inside an anti-static bag plus a 70 L roll-top dry sack for water proofing—belt loaders sit in the rain.
4. Declare it “fragile electronics” at bag-drop; most stations hand-carry tagged trunks to avoid belt tosses (not guaranteed, but helps).

Weight creeps to ~11.5 kg; that’s irrelevant because a paid hold piece may weigh up to 23 kg on both airlines. citeturn1search0

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4 Future-proof fix (if you’ll tour often)

Commission the same 55 × 40 × 23 cm frame in 9 mm honeycomb polypropylene panel (e.g. Astraboard™). Builders quote:

• Shell weight drop: ≈ 40 % vs 6.5 mm birch, saving 2 kg.
• Same hardware, same foam.

That lands the packed PC at ≈ 9 kg. Still over 8 kg, but now one GPU-out trick gets you under—and you keep full 25 mm foam.

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5 Take-away

Yes—the case is a paradox: perfectly sized for the cabin, but too heavy to stay there.
You must now decide whether to (1) strip weight until the scale reads ≤ 8 kg or (2) beef up the padding so it can survive the hold.
Either path works; leaving it “as is” exposes the Ridge to the single roughest part of the baggage system with less foam than the standards recommend.

You

1. Everything is too tight to remove
2. The GPU and SSD are entirely secured
3. The case itself weighs 10-11 kg without the ridge
4. im afraid of checking it in. It could be lost,delayed etc and I can’t risk it
5. Is a pro flight case more likely to be weighed ? They have never weighed my regular looking baggage
6. Is dry-bag and regular samsonite hard shell with my own padding a better solution, although not professional looking ?

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You’re stuck with a classic cabin-baggage paradox: the custom flight-case is the only box that meets 55 × 40 × 23 cm size rules, yet at ≈ 11 kg empty and ≈ 16 kg loaded it is double Aegean/Eurowings’ 8 kg limit, so staff will almost certainly weigh or tag it. A low-profile tourist spinner (e.g. Samsonite S’Cure 55 cm, 2.9 kg shell) padded with a dry-bag + foam comes in around 9 kg—still a kilo over the cap, but light enough that agents often let it slide because it looks like an ordinary suitcase. Below is why flight-cases attract the scale, how often each airline enforces weight, what extra risk you run if you check the Ridge, and the trade-offs of switching to the Samsonite-plus-dry-bag set-up.

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1 Why the pro flight-case will be weighed

• Visual cue: aluminium extrusions, recessed latches and corner balls scream “heavy equipment”; ground staff are trained to single out bags that look overweight or contain valuables to protect their load-factor calculations. Frequent flyers and DJs report that metal or Pelican-style cases “get weighed every time”, whereas fabric or ABS rollers rarely do. citeturn1search2turn1search4
• Policy: both Aegean and Eurowings state that any bag that “appears heavy” may be weighed at the gate; the cap is 8 kg in Economy/Basic, no exceptions for musical or electronic gear. citeturn1search1turn1search0
• Real-world enforcement: recent trip reports on Reddit’s r/onebag and r/GreeceTravel show Aegean and Eurowings agents using hand scales at busy gates and pink-tagging anything over 8 kg, while ordinary looking backpacks of 9–10 kg often slip through unweighed. citeturn1search3turn1search0

Bottom line: an 11 kg shell that visibly looks like pro gear is almost guaranteed to hit the scale.

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2 Why you don’t want it in the hold with only 17 mm foam

Spec	ATA-300 Cat-I requirement	Your case
Foam deflection to absorb a 1 m drop	≥ 25 mm PE-40 for a 5–6 kg load citeturn0search6	17 mm → 30–35 g shock
Baggage mishandling rate 2023	6.9 bags per 1,000 pax (IATA) citeturn1search1	Non-zero risk of loss
Typical damage mechanisms	Crush, 1 m belt tumbles, rain on apron citeturn1search7	Only partial padding, no gasket

A Ridge will probably survive a single belt tumble at 30 g, but it is no longer inside spec. If the case is delayed or soaked you could miss the show entirely.

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3 Civilian roller + dry-bag: does it solve the problem?

Component	Mass
Samsonite S’Cure 55 × 40 × 20 (poly-prop shell)	2.9 kg citeturn1search5
Ridge chassis fully built	≈ 5.5 kg citeturn0search0
10 – 15 mm PE-40 sheet + nested 70 L roll-top dry-bag	≈ 0.7 kg

Total ≈ 9.1 kg – only 1 kg over the limit. Reddit’s one-bag crowd and travel YouTubers note that soft-looking spinners or duffels in the 9-kg range are “rarely weighed unless the flight is packed”. citeturn1search1turn1search3

Pros

• Still meets 55 × 40 × 23 cm sizer.
• Shell gasket on the S’Cure plus the inner dry-bag keeps rain out.
• Looks like ordinary luggage—much lower chance of a scale check.

Cons

• 10–15 mm foam gives ~30 g decel in a 1 m drop (same as your current case).
• No recessed handles or stacking dishes; less robust for van touring.
• Hard ABS can crack under point load (flight-attendant warning) citeturn1news78.

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4 Ways out of the catch-22

Option	How	Upsides	Downsides
Buy “large cabin bag” add-on / Flex fare	Eurowings sells an 8-kg allowance; Aegean Flex/Business raises the cap to 13 kg. citeturn1search1	Keep rugged flight-case & 17 mm foam; no check-in worries.	+€18 (EW) + €35–70 (A3) per leg.
Switch to Samsonite + dry-bag	Accept 10–15 mm foam, disguise as tourist bag.	Likely to board unweighed; only 9 kg total.	Slightly less shock protection; looks un-“pro”.
Rebuild case in 9 mm Astraboard™ honeycomb	Saves ~2 kg shell weight.	You keep pro look and might hit 8 kg.	Two-week lead time; extra cost.
Buy an extra seat	DOT instrument rule allows a second seat for gear. citeturn1search8	PC never leaves sight; weight moot.	Most expensive; not available on all flights.

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5 Practical checklist if you choose the Samsonite set-up

1. Cut 15 mm PE-40 panels for all six faces; hot-glue them to form a snug box.
2. Slide the Ridge into an anti-static bag, then into a 65 L roll-top dry-bag; expel air and roll three times for IPX6 seal. Waterproof bags rated for electronics are <$40 USD citeturn1search6.
3. Place dry-bag inside the foam box, GPU facing mid-case, not outer wall.
4. Leave a printed “Fragile electronics – please handle” note on top; discretion helps if you are forced to gate-check.
5. Weigh at home: if it’s ≤ 9.3 kg you’re probably safe; above 9.5 kg buy the cabin-bag add-on in advance.

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6 Key take-aways

• Flight-case optics = higher weigh probability. Agents target metal boxes; ordinary spinners often pass by eye-test alone. citeturn1search2
• 17 mm foam is fine for cabin carry but marginal for hold drops. If it must be checked, add another 8–10 mm topper before you fly. citeturn0search6
• A Samsonite hard shell + dry-bag + thin foam weighs ~9 kg and still meets size. It looks civilian, so your odds of boarding without a scale are good. citeturn1search5
• Ultimate failsafe: pay for a higher fare tier (13 kg cap) or a large-cabin-bag option; that lets you keep the pro case and sleep easy.

Choose the trade-off that hurts least: a lighter, less “pro” Samsonite stack that probably sails through, or a heavier flight-case that forces you to spend on an upgraded allowance.