If I can recall correctly, there was "California Gearing" in the BMX world of yesteryear (early 80's?)-
The idea was that if you ran simultaneous "bigger" gearing it was faster (greater rollout) even though the gear inches were the same.
Example- a 42-14 (60GI) was faster than a 39-13 (60GI) because the chainwheels/sprockets were "bigger" and that is faster. Makes sense to a kid.
Last edited by Erzulis Boat; 09-20-21 at 11:07 AM.