Quote:
Originally Posted by P-hack
It is a function of the size of the motor, so yes, but it is gonna be heavy IF YOU HAVE NO GEARS!!! 
The tesla roadster has about 8.25:1 gear ratio IIRC. But you are not going to find a motor that can drive a single speed gearbox AND lift a heavy homebuilt thingamabob offroad rock climbing AND push it down the hiway. Multiple gear ratio choices certainly would be a good call there.
electric motors arent magical. And adding volts adds weight for a given torque, so less climbing. |
He said top speed would be about 30mph, so no highway speeds needed. He also is talking about a rock crawler so the range only needs to be a few miles per charge. so no big battery packs needed. With a diesel genset and a reasonable lipo pack and a small tube frame it could be fairly light and compact. Accumulators would help, its a way to regen and brake with hydraulics instead of the EV parts. Also with hydraulic drive that eliminates the need for mechanical gearing.