Lynn H wrote:
Most small calipers are sliders. Where there is a single piston pushing from only one side of the rotor. These calipers move when operated and there must be an accomodation for that movement in the mounting system. A single aluminum line all the way into the caliper will fail close to the caliper fitting.
 
Also the flex of a spring gear would add quite a bit of relative movement between the line and caliper. If the gear leg is rigid it needs only a short flex line right next to the caliper. If it can flex at the fuselage it needs one

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lynn, thousands (3500+)of RV's are flying and probably over 90% have the solid soft al tube called for by the plans. There is a 360 degree wrap around the brake to allow for the lateral movement. Ed's is the only one I have ever heard of fatiqued to failure. My guess is that it was too tightly wound or stressed someway. He only has several hundred hours and we have RV's with over 2500 hours here in my neigborhood that have not had failed???

I agree it would make a system that would eliminate Ed's failure but you do add extra joints and fitting's that can get loose. Ed seems to attract these type failures :>) Remember his fuel tank pickup falling off and he deadsticked in from 12 miles out! When I go cross country, I hope Ed will come along just in case I need field maintenance since he has seen it all.

Good luck Ed getting home soon,
Bernie