Can I Increase Torque on My Grinder/Polisher Without Changing Speed?

AI Thread Summary
Adjusting the speed of a grinder/polisher can lead to reduced torque, which is a concern for users seeking to use it for specific tasks like paint flattening. One suggested solution is to increase the speed and incorporate a reduction gearbox to enhance torque while managing speed. However, the user prefers an electrical solution over mechanical modifications, seeking to use capacitors and resistors to boost torque without increasing speed. The practicality of this electrical approach remains uncertain, indicating a need for further exploration of alternative methods. Ultimately, balancing torque and speed in a grinder/polisher requires careful consideration of both mechanical and electrical solutions.
Adder_Noir
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Hi,

I took apart my grinder/polisher and adjusted a small pot in there and it lowered the speed right down which will be useful for my car as a paint flatter. Only problem is it lacks torque. I was wondering if it is possible to increase the torque. Access is ok and the project is a realistic one, perhaps unlike my car's alternator regulator.

I was thinking of using a capacitor and resistor to dump large pulsed currents through the motor every tenth of a second or so to keep speed low but beef up torque. Is this practical or is a different conceptual approach needed to improve the torque? I really don't want too much speed involved.

Thanks.
 
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What you may want to do is turn the speed back up on your grinder/polisher and add a reduction gearbox to the grinder/polisher, thus increasing torque and reducing speed.
 
Emicro said:
What you may want to do is turn the speed back up on your grinder/polisher and add a reduction gearbox to the grinder/polisher, thus increasing torque and reducing speed.

It's a good idea but I don't want to start messing with anything mechanical. I'd prefer an electrical solution it's much easier in the long run :cool:
 
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