Originally Posted by
jimc101
BB spec? and crank type/compatibility (1x/2x/3x) they are going to be potential issues.
What BB type does your current bike have, and is it the same as the new crank, if not, there are adapters, but it's often not worth the cost.
How many front chainrings does your bike current have vs the new crank? if changing from 3x to 1x there is a lot more to think about than just the crank.
With others, what do you expect to gain from installing a new crank?
BB would not be a problem, for it's not working well and I have to replace the BB anyway.
My bike is 3X9 and the new crank is for 3x10. The sizes of the chainrings are both 22/32/44, the same size.
Now my crank needs replacing BB and all of chainrings, and looks no good because of lots of scratches. But there's a new crank that has never been used! Wouldn't it be great if it was compatible?