Originally Posted by
bicyclridr4life
Are 22 tooth (or smaller) and 32 tooth rings available for Bio-Pace cranks on a mountain bike? I would like 22/32/38 crank rings. All I can find are 28/38/48 or 51/52. A 30 tooth middle ring from a road bike might be an option - if I can ever find one.
Why? You ask? My knees and hips are shot, thanks to a hereditary bone defect.
Because of their shape, I think the smallest 110 BCD ring in Biopace was a 36T, and 40T in 130 BCD. I don't think a 1x10 system would be a step in the right direction at all -- what freewheel/cassette are you using?