Originally Posted by
Chuckk
TEN MONTHS without a Biopace discussion? Gotta fix that!
Had to dig through my box of chain rings yesterday to find a SS ring.
So many more Biopace than round rings! I think a bunch were take-offs from Colorado Cycle when they were new.
They hurt my knees, and looked foolish.
Worst was this one, came on my Cannondale tourer. Uphill it felt klump-klump-klump JUST like a flat tire.
They did have a second generation that was rounder. Here's a comparison.
Since I'm older now and my cadence is way down, I may give the rounder one a try.
Too many years since ditching my first-gen Biopace to remember the feel, but Biopace II seems not to draw attention to itself. I just overhauled the spouse's old mtn bike that features a BP crank and have put a few dozen miles on it dialing everything in.
Simple enough to swap in round rings for a comparison. FD adjustment is simpler, too.
Insignificant wear, luckily.