Sprocket gearing

jayel

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http://www.rbracing-rsr.com/gearspeed.html

some talk the other day about what speed to expect with what gearing, this calculator really works well, you need to know he primary gear sizes (pinion shaft & clutch basket) 27/72 and the gear ratios enter your target RPM your gear ratios

1st...........................2.461:1.........32/13
XS1 and XS1B............2.214.............31/14
2nd..........................1.588.............27/17
3rd...........................1.300.............26/20
4th...........................1.095.............23/21
5th...........................0.956.............22/23

and rear tire size 16"=25.75 18"=26.75 and finally what sprocket sizes you want to run, here's my chart with 17/31 sprockets
 

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