awesome SECRET sprocket formula REVEALED

I’ve FOUND THE SECRET FORMULA muwuahAHAHAHAHAA!

(motor RPM) x (tire circumference-in.) x .000948 = reduction factor
(target MPH)

Plug in the motor RPM when loaded, the tire circumference (diameter x 3.14) and the MPH you’re looking to get.  That gives your reduction factor.  Take your front sprocket tooth count, multiply it by that factor, you’ll get the number of teeth you need on the rear.

Wait- here’s a simpler one- just plug in the diameter, it figures the circumference for you:

Here’s a simpler version that figures the circumference:

(motor RPM) x (tire diameter) x 0.003 = reduction factor
(target MPH)

Advertisements

Comments?

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s