My friend, Uncle Fred, is making a three wheeled electric drive gopher, based on the Morgan Three-wheel car.
He is using 24V sealed lead acid batteries 12V x 2 40Ah
Motor for transmission is 900W from an electric lawnmower.
Controller is 4QD
Motor runs at 3000 Rpm driving vari-drive 6:1 ex 50cc scooter through a 14:1 reduction box driving the 16″ rear wheel.
Slow gear is approx. 9 kph & flat out is approx. 60 kph.
More on this build blog: http://forum.atomiczombie.com/showthread.php?t=4413