By robnewyork - Wed May 04, 2016 4:02 pm

A common and easy example

simple example is an e300 overvolted to 36v with stock gearing, 11-55 ratio

motor rpm is 2600 at 24v So 36/24=1.5 times 2600=3900rpm motor rpm

the Gearing is 5to 1 (5rpm at motor is 1 rpm at tire so 1/5th of 3900=780rpm(more math for complex gearing )

the tire is 10 inch so circumference is 10times Pi 3.14 =31.4 inches per rpm

31.4inches times 780 rpm =24492 inches per minute, divide by 12=2041fpm feet per minute

Divide 2041fpm into miles so (2041fpm /5280=.387miles per minute *

now converting to MPH=.387 times 60 minutes =23.19mph.. As per real world results this is darn close to the 22.5mph commonly expected from an overvolted e300 with stock gears.

simple example is an e300 overvolted to 36v with stock gearing, 11-55 ratio

motor rpm is 2600 at 24v So 36/24=1.5 times 2600=3900rpm motor rpm

the Gearing is 5to 1 (5rpm at motor is 1 rpm at tire so 1/5th of 3900=780rpm(more math for complex gearing )

the tire is 10 inch so circumference is 10times Pi 3.14 =31.4 inches per rpm

31.4inches times 780 rpm =24492 inches per minute, divide by 12=2041fpm feet per minute

Divide 2041fpm into miles so (2041fpm /5280=.387miles per minute *

now converting to MPH=.387 times 60 minutes =23.19mph.. As per real world results this is darn close to the 22.5mph commonly expected from an overvolted e300 with stock gears.