hi folks, i'm looking at building up my next Riv in some road-ish configuration for a fast/light trainer.. this will probably going to be based on a canti-Rom (or a Roadeo), and i want to make good choices to help alleviate some knee problems i've had with my Sam Hillborne.
the Sam has a Sugino XD2 with 175mm cranks, and i experienced some rather bad ITB pain on the right side starting 60 miles into a century. at the time i thought it was because i was clipped into the pedals and didn't have enough float, and while i do think some cleat mis-adjustment might have contributed, i've continued to have some minor pain in that knee all summer when doing short rides (6 miles) while using only platforms (after taking almost 2 months off riding to allow it to heal). so i'm wondering if the Q factor and crank length are something i should change on my next bike. some relevant info - i'm 5'11 but with a pbh of 84.5 (rounded up a few mm), so i've got short legs and long torso. in addition, i rode a 19" Gary Fisher Cobia 29er for the past few years and never experienced even a twinge of pain doing 12-30 mile rides, and ~ 75+ miles a week with clip-ins; the Fisher also had 175 cranks, and a Q-factor of 166. I believe the Q on the SD2's are about the same (165), but i'm not sure what the BB width that came with the Sam is, so it's possible the Fisher had a larger effective Q...? i'd like to go back to SPD clip-ins, as i never had a problem before my century ride last june, and based on some recent threads on this list, i'm planning on going with a shorter crank.. i'm thinking 170mm, as i doubt 172.5 will make much of a difference (but i'd love to hear dissenting opinions). also - anyone know how "typical" the Q the Sam with stock BB and SD2 is? any advice on how to minimize ITB issues when setting up a Riv in a road-ish fashion? i'm assuming i DONT want to go for a compact double with narrow Q, but might want to get a wider BB or a set of cranks with a larger tread. thanks, andrew -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
