Originally Posted by
The Golden Boy
I keep playing with the idea of replacing some chainrings with Biopace to see if it makes a difference with my knees.
I took the Biopace chainrings off my '85 Fat Chance and dropped down to 175 mm cranks. I really did feel the difference in a less "choppy" pedal stroke and a smoother spin. Granted, that's all subjective and could be confirmation bias, but I wish I had done it long ago.