Originally Posted by
sean.hwy
150mm are they sit and spinners? From I read for road bikes there is no lose in power if you are sitting and spinning.
The longer arms have advantage for instant power ( say like getting over a boulder on 15% grade hill etc.. ) and standing and sprinting.
I have been wanting to try 150mm on my road and maybe gravel bike. maybe I should try it on the mtb. hmm...
You understand the concept well. The longer fulcrum (crank) increases power, but for my friends ground clearance is paramount since they're ferocious riding downhill and cornering. They seem to have settled on 155 and since they're in the 5'8" height range, they probably would "normally" ride 165 or 170. I have another friend with an e-MTB who had the same problem and changed to 150 or 155 with equally good results.