Originally Posted by
pinholecam
Hydraulic will make it worse since it 'auto' adjusts that gap, so if you end up with brake rub in the field, its a very painful process to solve it (esp. over here where it usually means being in the 35-38degC Sun with RH of 85% or more)
Sounds like if you had SRAM or AVID hydraulic disc brakes!
I had AVID Code R and AVID Code 4 piston hydraulic disc brakes with exactly that problem and even worse: when it rubs and continue to ride, the disc eventually completely block the wheel and the bike become unusable until it cools down allowing to ride a little further... until it blocks again... I read feedback of other users with other models of AVID and SRAM hydraulic disc brakes who had exactly the same problem.
Its a design error, the liquid expand when it become warmer, there must be a return path to the handle liquid reservoir but it doesn't seem to work
I never had it with Shimano (XT and Deore) and Magura (old Marta SL and current MT5).
I have disc brakes on my two Birdy, and they are surely not overkill, TRP Spyre on one (mechanical 2 piston) and Deore (hydraulic 2 piston) on the other, the hydraulic are more progressive and require much less effort on the lever for the same braking.