Rancho Transaxles Speed and Horsepower Calculators

Rancho Speed Calculator

To create your individual speed chart, select your tire size and click "calculate".
	Width		Series		Wheel Size
Please enter the tire size of the rear axle:		/		R

Please select the ratios:			Differential ratio		4th gear ratio
	a		4.12		0.89
	b		4.12		0.82
	c		3.88		0.89
	d		3.88		0.82
	e		3.44		0.93
	Indicate your ratios

Thanks to Custom Speed Parts for their help with the Speed Calculator.

Input:
Total Car Weight (with driver):
E/T (quarter mile elapsed time):
Trap Speed (MPH at end of quarter mile):

Output: