Originally Posted by eMwolB
Is there a chart or formula to figure out gear ratios, etc...I feel like I'm in trig...or was it calc??? - where's my abacus?
If you're not lazy, here's how it goes:
ratio = ring teeth / cog teeth
gear inches = ratio * wheel diameter = ring teeth * wheel diameter / cog teeth
gain ratio (some statistic that SB made up) = gear inches / crank length = ring teeth * wheel diameter *.5/ cog teeth / crank length
development = gear inches * pi = ring teeth* wheel diameter * pi / cog teeth
There's your formulas... FOREVER!