There have been cases of calipers ripping off frames or breaking frames since they were designed to have the force going the opposite way. Never heard of a rotor going, but i suppose it's possible since they have a rotation direction.
i have seen a rotor fail before. its the same reason the frames fail and that they are designed to only have a high load in one rotational direction. most of the time though the frame will fail before the rotor will
Hayes rotors along with most others have a pattern that swoops toward the rotational direction. The result of this is that the legs supporting the braking surface are put in compression. All metals are stronger in compression than in tension, this includes stainless steel.
A rotor failure seems plausible under reversed load, but I tend to agree with the replies before me. The frame is a much weaker link in this chain.
not only reinforcement, but the mounts that i've seen are relocated to the inside of the chain stay, no longer welded -wish the best luck- tabson the outside of the geometry. that way the force is working against the rear triangle as opposed to just the weld.
still, maggie hs33's are powerful rim brakes. but i guess rim fetigue is always a more painful (to wallet) issue.
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