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Sprocket combinations and speed?

April 26, 2017speed sprocket

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Sprocket combinations and speed?

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Patrik, here in the USA, the FJ countershaft sprockets are available in 16, 17, and 18 tooth. There may be other sizes available also, I don’t know. I did some comparisons of different combinations. I used a 76 inch rear tire circumference, 5th gear, 4000 RPM: 15/40 = 55.31 miles per hour 15/41 53.96 15/42 52.67 16/40 58.99 16/41 57.56 16/42 56.18 17/40 62.68 17/41 61.15 17/42 59.70 18/40 66.37 18/41 64.75 18/42 63.21 I hope this helps you see the relationship between sprocket combinations and speed. [Lee Carkenord] Also see my two gearing tables for “Rpm vs. Speed gearing tables for the FJ” at http://kickme.