Thread: What to do with them? Mabuchi RS-380sh motors-4535

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Mabuchi RS-380sh motors-4535

I work in the medical field where we discard these things regularly.
As a haunter, I can't throw em away, so I have at least 50 of them.
Does anyone know how I can reduce the rpm's (to my liking) with these things and where to acquire the appropriate gearing?
I'll send 10 of these motors to anyone (continental US) to anyone with the best (cheapest (assuming the gearing is cheaper than buying the whole gizmo...)) links...
http://www.mabuchi-motor.co.jp/en_US...s/rs_380sh.pdf

I don't think you'll find anything that will gear down an 18,000 RPM motor.
Even if you could gear it down to a useful RPM, it wouldn't have any torque left to do much of anything.

Thanks Dave, that's what I was afraid of...
Someone on another forum suggested I run it thru a dimmer switch to reduce rpms since its a brush motor.
Have you ever seen that work?

Well, I haven't had much luck with that method.
I tried it once on an AC motor, but all the dimmer did was eventually just shut off the motor without slowing it at all. But, same deal--if you could slow it to a usable speed, it probably would not have much "ooomph" left to move anything for you.

I wish there were a way, though. I used to work in a vacuum cleaner repair shop years ago.

Take a look at some of these gearboxes. Also, since these type of motors are often used in RC cars, etc, you could probably use a standard RC speed control, that takes servo pulses for control, to adjust the speed below the gearbox speed.

Also, remember that when you gear a motor down, you increase the torque output. If you cut the speed in half, the torque (roughly) doubles.

- Hook