Not Model A

[Quigley1930]

Is there a way to reduce the speed of aa 3600 rpm bench grinder to 1850?

Sewall Tyler

 

[Dollar Bill]

It depends on how it's configured. What brand/ model is your grinder?

 

[Tom Wesenberg]

I would just pick up a different motor, as fractional horsepower motors are quite cheap, especially at swap meets and garage sales. I mounted a wire wheel to a 1725 RPM motor, as most of the time I like the slower speed better.

 

[SeaSlugs]

or you find one old enough thats belt driven then play with belt and pulley sizes.

What do you need to reduce it for?

 

[Mitch//pa]

Seas pulley idea works, kinda like the brake lathe set up... or what Tom said get a different grinder... both suggestions prob beat rigging what u have and poss creating a fire hazzard

 

[Quigley1930]

Thanks everyone. I do some woodturning and have use a 1"x30" belt sander to sharpen the tools. It's hard to keep the proper bevel. I've s

een some homemade jigs for bench grinders and won't have to worry as much about heat with a slower speed. I'll keep my eyes peeled for a slow one.

Sewall

 

[Tom Wesenberg]

If you are near a metal recycling yard, it's amazing how many good electric motors get thrown out.

 

[tbirdtbird]

rheostats won't work on that type of motor, fyi

 

[Mitch//pa]

Tom post a pic of your hand crank grinder

 

[Tom Wesenberg]

Tom post a pic of your hand crank grinder

I actually have one somewhere. The ones I thought were pretty interesting were the hand crank grinders for sickle bars with about 4 sets of step up gears.

 

[Quigley1930]

I have a seated grinder but the wheel is really out of round and the frame needs a lot of work.

Sewall