MWC said:
King Boonen said:
I think the UCI have said neutral support will be provided for 140mm discs and 12mm axles but would have to check. Having ridden discs I think that's probably the best combination.
Edit: It's 160mm and 12mm axles.
That should change to 140. So far all I've seen from the pros are 140mm rotors front and rear. 160 makes way to much power for a rear rear wheel, even for CX.
I run 160mm front and rear on my gravel bike and don't think it too much, but I digress...
Think I read somewhere last week Sagan was just wanting to use 140's on his bike which I thought odd given that neutral spares would be carrying 160mm equipped wheels.
Biggest issue I see is the rotor/ caliper alignment between different hub manufacturers and how to adjust it on the fly. I don't know if their is any sort of standard for hub/rotor spacings, but my two wheelsets, the second one wouldn't even spin because the rotor was jammed against the pads. Had to shim it out and they fit perfectly now and can be changed in a few seconds, but not something you could do in a race. I could imagine a self adjusting caliper being able to account for rotors of different thicknesses, but not one that is off centered within the caliper. Hopefully there are engineers smarter than I that have this all under control.