- Mon Nov 06, 2017 8:19 am
Sounds like a good setup. Limiting peak voltage should be close enough in terms of velocity limiters, although you'll still have the downhill effect. The current limiter and ramp-up control should help keep the gearboxes from, breaking pieces.
There are an large number of different variable-speed pedal options. I used a hall-effect scooter pedal and repurposed the stock gas pedal as a brake pedal. I swapped the gas/brake connections on the now-brake pedal and that allowed me to just keep the stock wiring there -- it's "on" the gas by default and hitting the brake pedal now switches it to the braking circuit (my homebrew PWM controller sits between the negative wire going to the battery and the battery negative terminal, rather than on the positive side of the motor or battery). The biggest problem I had was that the F150 tub doesn't really have space for a brake pedal -- I had to cut out part of the footwell; second problem is that now there's no brakes when it's just sitting, so on hills you have to park it against something. The next speed-controller I'm building now is aimed for a single-pedal solution with relay and re-engages the brakes ~0.5 seconds after the gas is released.
F-150 - 24-36V with homebrew 100A variable-speed motor controller, 4x 775 motors (no, it's NOT all-wheel-drive--look up 'quad damage' in the gearbox section for more info!)
Pink Rocket Princess Mustang - 15mph, 36V, 4x 775 motors, homebrew PWM controller rev 2....
Hurricane - 24V w/50A step-down controller, 775 motors