I had Biopace on a mountain bike road hybrid. Honestly, I couldn't tell it was there, even after stepping straight off a non-Biopace bike. My gf has that chainset now, gets mystified at guys asking her how they go and is it easier. She doesn't know what they are talking about. I don't think I do either. I think Biopace was yet another good idea on paper that doesn't quite work out in practice but isn't detrimental either.
I had Biopace on a mountain bike road hybrid. Honestly, I couldn't tell it was there, even after stepping straight off a non-Biopace bike. My gf has that chainset now, gets mystified at guys asking her how they go and is it easier. She doesn't know what they are talking about. I don't think I do either. I think Biopace was yet another good idea on paper that doesn't quite work out in practice but isn't detrimental either.