Weird but over the last few rides with no change in anything im starting to get rub marks on my cranks from my heel hitting it. Haven’t changed any setup wondering if it could be something worn? Though cleats were new less than 4 months ago.
Setup is Red cranks with HT pedals and the H5 cleats (ones with float)
No as far as i know. Its also a little strange as i don’t notice my heels tap the cranks at all just the faint lines left on them after riding. Does it with both pairs of shoes i have so thinking its not the cleats and possibily something to do with the pedals or cranks as you say. Though no idea who DUB cranks can move.
I’d come at the problem from the opposite direction. Whatever has changed on your cleats/pedals that has allowed your feet to get into this position, it’s clearly a position they want to be in. I.e. Changing your setup to reduce the amount of float might stop the rub but would do so by stopping your feet from going where they want to go. That may cause other issues down the line. So I’d be talking to a fitter to help look at whether you might need pedals with longer axles, cleats with more float, shims, fitted insoles, etc to get a setup that avoids heel rub but is also biomechanically sound.
Possible it’s always done it but it’s only recently that the marks have started showing up enough to notice? I used to have a commuter bike where I had enough heel rub that it went from wearing off the paint, to polishing the metal, to eventually making a noticeable depression in the crank (wore holes in the inside heel of 2 pairs of shoes along the way). Always wondered how long it would have taken until a crank just snapped off!
Other than cleat or pedal wear leading to increased float, other possible explanations could be something like glute tightness, or saddle slipping.
It’s just a picture, they might have crashed on it before, hit a rock/kerb etc. Anything can break now and then. The hollowtech thing seems to happen a bit too often, more like a design flaw.
Deffo worth checking cranks and pedals for play, cracks, etc. Tap the crank arms with a coin or your fingernail and listen for unusual dull sounds. Compare left and right arm, I’d imagine the structure is similar towards the pedals, but might be different near the BB.
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