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It is times like this that makes one wish that they had payed a little closer attention in math class. Had teachers used examples like this in class a few more kids would have payed attention.
Remember them proportion problems in math this is a prime example when they can be used in real life experience./
If you are geared 12 to 1 and you are only hitting 11500 rpm at the end of the straight what gear ratio would we need to equal 13000 rpm at the end of the straight. Set up the equation cross multiply and divide.
12.00 = 11500
.....X = 13000
12.00 X 13000 = 156000
156000/11500 = 13.57 to 1 now go to your chart and find a couple of sprockets.
We try to gear a little high for the track and adjust down >>>>>easier on motors
Honest Dad himself
