Originally Posted by
bicyclridr4life
Actually ... I installed the Bio-Pace crank I took off another bike (only because I could not get the ring sizes I wanted) and put the Bio-Pace on another bike that had a cheap HEAVY as HECK non-replaceable ring Shimano crank, have to raise the FD about 3/16 inch it looks like.
I actually like the Bio-Pace
I had a 1987 Centurion Ironman with a 105 biopace crankset. I liked it too. Though, the first time I went to fine-tune the FD, I had a "WTF!" moment when I realized the chainrings weren't round! I had never heard of such a thing and thought I had bought a junk bike. Can't say I noticed any vast improvement in pedaling efficiency, but at the very least they are a nice conversational piece.