Would it be possible to change from 3 chainrings to 2 on my 29er? I never really use my big chainring, and the extra clearance would help for the multitudes of logs that we have around here. What would it require? I have a bontrager race crank, and i dont know what the chainrings are. Do i have to get a bashguard? if i get a bashguard can i get one that is just a little bit bigger than my 2nd ring? I wanna get a bit more clearance, but i dont wanna spend a whole bunch of money. If i could get away with just taking off one ring, i would.