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sprocket math help

Thread starter Boriqua
Start date Feb 23, 2018

Boriqua

Guest

Mar 6, 2018

Thank you so much everyone. I was able to calculate all the different gear ratios and then the change in RPM based on the posts. I took it out on the highway for the first time today and it was dead on to my calculations. I went with 18 front and 48 back and that geared it down from where I was but still taller than stock 15 x 41

SO I got some pep back which makes it far more fun to ride around on but at 75 I gained about 250 or so RPM. I can live with that. At 80 mph I was pretty solid between 5400 and 55. at my normal highway speed of about 72 I was right around 51-5200.