Posted by Don on February 19, 2000 at 20:21:24:
In Reply to: What's the formula for figuring road speed w/4.88 gears. posted by Jonas on February 19, 2000 at 15:56:47:
I was tired of trying to find that equation, so I worked it out and came up with:
RPM = (gear ratio * mph * 336.1355)/ tire height(inches)
With your data it would be 4.88*55*336.1355/30 = 3007 rpm