I think I’ve read this one before. For some reason I have always loved vintage magazine writing and advertising.

I like biopace on a road touring triple for the large and middle chainring, but being a 6’4” Clyde, the granny is going to be for mashing to some extent, and Biopace just saps my torque.

I recently switched out the inner for a circular chainring on my Trek 620 when replacing the BB ahead of a tour. My son rode it 160 miles and seemed to do great!