here at AK motorsports we are doing some research on an upcoming electric go kart. it will have a 3hp 72 volt dc motor with a custom built AK motorsports PWM controller. it will get its power from 6 12 volt 20 amp Hr lead acid batteries. we are calculating a top speed of about 30-40 mph and will accelerate from 0 to 30 in about 2-3 seconds. pictures coming soon.