sacharlie wrote:BM how high of RPMs are the drive sprockets turning on MC or sport ATV engines? I would think there is some internal reduction but not sure.
Thanks
I'm confused!
I always use the #336 when figuring speed in mph, but where did I get that 336. It does work though. Say you have a 20" diameter wheel driven by a 3000rpm motor that you want to go 7mph. I say 7÷20×336=117.6. Then 3000÷117.6=25.51. So 25.51 is the reduction needed.
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