Originally Posted by
fuzzbox
Thanks! My only issue is the largest chainring is a 39 and it kind sucks going downhill since it tops out really fast, however, that was on the road. I'll find out Thursday if I need to swap that out.
you must have found a big hill... just coast.
39x11 should get you over 30mph if you can spin >100rpm. But even 39x12 (I don't know what cassette you have) is almost 23mph @ 90rpm. So, I think you'll find the 39 is plenty on trails and you can just coast down big hills on paved roads.