Does a Deployable Hard Case outlast a flight case on cycles?

Answer: Six times over on this rig: 0.2 mm of latch wear at 5000 cycles against 0.8 mm of play at 800.

The alloy case is lighter, so why not use it everywhere?

Answer: Its 59 g per litre holds only while panels are straight; a dent cannot be flattened, so a swap retires the body.

When is a soft bag the better answer?

Answer: High payload, no stacking, one trip: 91 percent efficiency but no rating and a zip that drags at 300 cycles.

Is IP67 enough in the field?

Answer: For wading and washdown, yes. Thirty minutes at 1 m is the limit; longer immersion depends on gasket compression.

What does poor repairability cost?

Answer: Spare weight and downtime. This case covers latches and gaskets with 0.42 kg of spares; a rotomoulded body has none.

Deployable Hard Case vs Alternatives: Where the Gaps Are

Quick answer: A Deployable Hard Case is measured against flight cases, aluminium-magnesium cases, rotomoulded cases and soft bags with an insert. It loses on speed to the bag and on weight to the alloy case. It wins on cycles, ingress rating, stacking and repairability at the same time.

How a Deployable Hard Case Is Compared
Deployment Speed Comes Down to Moves
Opening Cycles and Ingress Ratings
Weight and Volume Efficiency
Repairability and the Verdict
FAQ

1. How a Deployable Hard Case Is Compared

The alternatives: a flight case of 9 mm plywood edged in 30 mm aluminium, an alloy case folded from 1.2 mm sheet, a rotomoulded 4.5 mm PE shell, and a soft bag of 1000D nylon over an insert.

Every figure uses one internal size, 600 × 400 × 300 mm, or 72 L, at 18 kg, with empty weight and single-latch cycles.

Design	Empty weight	Rating	Rated cycles
Deployable Hard Case	7.2 kg	IP67	5000
Flight case	12.5 kg	IP54	800
Alloy case	5.4 kg	IP67	3000
Rotomoulded case	9.8 kg	IP67	5000
Soft bag, insert	2.6 kg	None	1500

2. Deployment Speed Comes Down to Moves

A Deployable Hard Case opens in 7 seconds: two latches, one movement each, and the lid stops at 100 degrees. A flight case took 6 minutes 20 seconds for the same task, half of it fitting four castors.

Deployable Hard Case: pale grey case from the side, arched handle on top, two latches clamping lid to body, rounded corners, dark background

Move count explains it: 2 here, 4 on a rotomoulded case, 11 on a flight case, one zip on a bag, at about 8 seconds per gloved movement. The bag is fastest, but only until its zip drags at 300 moves.

3. Opening Cycles and Ingress Ratings

Cycles ran at -20 °C and +50 °C for 500 each, then at room temperature. At 5000 cycles this latch wears 0.2 mm and keeps 85 percent of its preload, while a flight case at 800 has 0.8 mm of play and a 1.5 mm lid sag.

IP67 means 30 minutes at 1 m, met here by a moulded groove and a gasket compressed 30 percent. A flight case clamps its gasket under extrusion and reaches IP54, and a rotomoulded case claims IP67 but with ±0.8 mm of wall tolerance leaves compression uneven.

At 1.8 m on six faces the frame spreads load into four edges, where a flight case bends its corner castings.

4. Weight and Volume Efficiency

Volume efficiency is interior over exterior, which decides how many units fit a truck. This case is 660 × 450 × 350 mm outside, or 104 L, so 72 L of interior gives 69 percent; a flight case sits at 56 percent, a bag at 91 percent.

Deployable Hard Case: cream case at an angle, long recess across the lid, a latch on each side, round valve by the handle, dark background

Weight per litre runs 100 g here, 98 g for the flight case, 59 g for the alloy, 83 g for the rotomoulded, 33 g for the bag. The alloy wins until a dent leaves a seal face that never returns to IP67.

Design	External volume	Efficiency	Weight per litre
Deployable Hard Case	104 L	69%	100 g
Flight case	128 L	56%	98 g
Alloy case	91 L	79%	59 g
Rotomoulded case	118 L	61%	83 g
Soft bag, insert	79 L	91%	33 g

Six high against four puts 144 units in a 4.2 m body against 96.

5. Repairability and the Verdict

Repairability asks whether the part swaps alone, what tool it needs, and what the spare weighs. A latch here takes 4 minutes and a 4 mm hex key at 0.12 kg; the gasket takes 12 minutes at 0.3 kg. A flight case latch is drilled out and re-riveted in 35 minutes.

Aluminium is the worst column: a dent needs a 40 minute panel swap and 1.8 kg of spare, and a rotomoulded crack retires the whole body. Beyond six months with stacking, lifting and repair, this design holds all four.

Conclusion

Across five columns, a Deployable Hard Case is never first: the bag is faster, the alloy case lighter, both better on volume. It wins on the combination of 5000 cycles, IP67, 69 percent efficiency, six-high stacking and a 4 minute part swap. Which weakness can be lived with matters more than a champion, and a Deployable Hard Case trades weight for repair.

This article discusses only the container (case body) side of specifications and design intent, and does not cover any handling, loading or use of the contents.