Motorcycle Gear/RPM/Speed Calculator


This is a gear/rpm/speed calculator that I saw from Janis on www.bikernews.com. I thought it was awesome. I manually entered the Vulcan 900 Custom, the Front Scootworks Pulley, and the 230/60 15 Tyre into the Load Presets for us 900 Custom people. You may change any of the values in the configuration boxes if you have different tire sizes, pulley systems, and gear ratios. Hope you all enjoy! =)



Preset:    
Max RPM:    Tire Size: / /
Primary Drive Ratio:    Final Drive Ratio: / (front & rear sprocket tooth count)
1st Gear Ratio: /    2nd Gear Ratio: /
3rd Gear Ratio: /    4th Gear Ratio: /
5th Gear Ratio: /    6th Gear Ratio: /

 
1st
2nd
3rd
4th
5th
6th


Assumptions:
US Tire Circumference in inches     ( Width / 25.4 * Aspect Ratio / 100 + Rim Size / 2 ) * 2 * PI
Wheel revolutions per minute     RPM / Primary Drive Ratio * Gear Ratio / Final Drive Ratio
Speed in MPH     Wheel Revolutions per minute * Tire Circumference * 60 / 63360