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Old 05-25-2012, 07:04 PM   #1
jamnw
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Default Mill Motor RPM

I have a "barley crusher mill" and was considering motorizing it.
I have access to a compressor motor.

3/4 HP @ 1725 RPM
But it also says its "non reversible"

Any thoughts?

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Old 05-26-2012, 12:16 AM   #2
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small 1"ish pulley on the motor, large 10"ish pulley on the grain mill to lower the rpms.

There are a bunch of threads on motorizing grain mills that will help you out.
I'm actually motorizing my monster mill mm2.0 tomorrow. I'm using a 3/4 hp motor from a garage door opener. I got a 1.5" pulley and a 12" pulley with a 45" 3L v-belt from grainger.com

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Old 05-26-2012, 02:02 AM   #3
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I have completed a very similar project ... http://www.homebrewtalk.com/f51/moto...0/index17.html

I used a 2" on the motor and 7" on the mill. This should give about 550-600 from a 1725 motor.

(WOW, I thought my 1/2h farm duty was overkill, 3/4? Look out grain!)

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Old 05-26-2012, 04:33 AM   #4
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perfect motor. Reversible isn't something you'd use. Just get a good set of sheaves or a gear reducer. You getting a good price for it?

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Old 05-26-2012, 05:34 AM   #5
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Nice! Go with the 1.5" on the motor and 12" sheave on the mill. 3/4 hp will be more than enough power. I use a 1/4 hp on mine. I usually start it up then add the grain but a couple times I've loaded the grain then started the motor. So far it hasn't even hiccuped on me, so you'll shouldn't have any worries with a 3/4hp motor.

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Old 05-26-2012, 12:59 PM   #6
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The price is pretty good... FREE

Thanks for all the suggestions.

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