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Hello everyone, the problem with using bicycle parts is they are simply not made to stop the weight of an aircraft. The calipers are just not strong enough and will eventually fail the first time you really need them, usually breaking off where they mount.

Bicycle braking systems are normally designed to pull up something that is a maximum weight of 120 kg total. Braking something 3 or 4 times this weight is much more than what the system is designed for, the rotor will build up so much heat that it will warp and the fittings holding the brake caliper will eventually break.

You should be looking at systems for things like motor scooters.

Even though the weight of a motor scooter is not as much as an aircraft they are continuously braking from fairly high speeds and are more than strong enough for something like the X-Air. You will see that the brake caliper itself is probably twice the weight because it has a decent casting where it attaches to the frame and also the disk itself will be 3 times thicker.

Experience shows that the bicycle system especially if you go hydraulic works really well for things like engine run up at the first time you need to brake in a real emergency may end up in tears.

Can you give us the?Shimano model or part number you used.
Thanks, Bob

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