Electric vehicle motor selection Answered
As any one who has looked at my instructables knows whilst a school teacher I built a full sized electric racing car.
This had a 250 watt DC motor over run to 500 watts - 20 amps at 24 volts .
It was capable of running the car up to 25 - 30 MPH and using 2 car batteries drive for a couple of hours on the flat.
Nowadays electric vehicles are all the rage. Looking at a few motores as small as 4000 watts are in use for city use where high speed isn't necessary.
Now the question:
This motor intended for model cars is rated at 4000 watts RPM 26,100 100 amps at 45 volts. that's about 5.5 Hp.
Suitably gears down could such a motor be a power unit for a light weight electric vehicle.
The DC motor I used was, by comparison, huge and weighty. It seems to me that HP is HP and 5.5. Hp is plenty for what I have in mind.
My concerns as always is I see no other commercial manufacture doing this - or anyone else for that matter, only electric bikes use small motors.
There has to be a reason I am not catching.
Experts out there you opinion please.