[chbot] slow motor

Andrew Errington erringtona at gmail.com
Wed Nov 17 06:10:58 GMT 2021

Depending on which part of the original motor assembly died could you
combine the electric drill motor with the worm gearbox?

If it's going too fast could you put a PWM speed controller on it?


On Wed, 17 Nov 2021, 18:29 Robin Gilks, <gb7ipd at gmail.com> wrote:

> Greetings all
> I've followed up the suggestion of using a cordless drill for my low speed
> motor to substitute for a wiper motor..
> Investigation of 9.6, 12 and 18v drills that have gone the way of nicad
> batteries have shown me that they all spin way too fast and have nothing
> like the torque of a wiper motor.
> This is mostly due to the gearbox rather than worm drive the wiper motor
> has. The added advantage of the worm drive is that it can't (easily) be
> driven from the output side so no brake is required.
> So back to Monday night's question, does anyone have a wiper motor going
> spare? Permanent magnet (i.e. reversible) with a simple shaft out rather
> than an internal cam or crank..
> Cheers
> --
> Robin Gilks
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