Speed controllers to use with mobility scooter motors?

[Anttazz]

Just buy the 48v version if you want to run it at 48v?

[typhoon_driver]

running it at 48v is a quick way to a toasted motor.

[SnowLabs]

Yeah, I figured as much. I ask purely because you can't get the 48v version on Amazon.

[maddox10]

Feeding a 24v motor 48V is asking for a fried motor, especialy the already hot running Ampflows.

36V with a good gearratio is maybe an option.
Maybe 30V as a compromise?

[mattsdragons]

From what I can gather, Ampflows really don't like running much above their rated voltage for long periods of time. 30v (7s lipo) should be okay but I wouldn't want to go much above that.

[terry]

I've run 24v ampflows on 33.3 volts 9cell a123 for years no problems.

[typhoon_driver]

I'm assuming that's in a drive application Terry? A spin up motor on a disc will be under a hell of a lot more stress than drive motors if you are gearing it for high top speed. That's the issue running the mags on higher voltage. Higher voltage = higher current = higher temperatures

[terry]

Yes it was the drive motors.

[maddox10]

With a decent gear reduction I suppose.

[supernova]

Ive had Vyper Speed controllers on order from robot marketplace for months now and they are still on back order. what other options are there for speed controllers? these will be for drive motors.