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Home Brew Forums > Home Brewing Beer > DIY Projects > Other > Motorized Grain Mills: Time to show them off!
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Old 09-25-2011, 05:40 AM   #101
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What about this motor for a mill?

I guess it does require a start relay that is not included and has that open fan at the back. 60 in/lbs is probably solid on torque and it runs CW. Price is right!

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Old 09-25-2011, 05:54 AM   #102
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HERE'S ANOTHER good motor and a nice price.

Although you'd have to buy the capacitor separately. Still...

My mill is built, but I'm still looking at motors on ebay. WTF?
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Old 09-25-2011, 12:49 PM   #103
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Originally Posted by Dgonza9 View Post
What about this motor for a mill?

I guess it does require a start relay that is not included and has that open fan at the back. 60 in/lbs is probably solid on torque and it runs CW. Price is right!
Although it has 20 in/lbs, it runs at a very slow speed. Not to sure I would consider that..
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Old 09-25-2011, 12:51 PM   #104
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Quote:
Originally Posted by Dgonza9 View Post
HERE'S ANOTHER good motor and a nice price.

Although you'd have to buy the capacitor separately. Still...

My mill is built, but I'm still looking at motors on ebay. WTF?
This motor is way better then the other one I just commented on. It has a shlt load more torque but it still runs at a slower speed. If I am not mistaken, with RPMS there is a certain point where if it is running too slow it stops working well? I would choose this one over the other one. Looks like this motor runs at 80 RPM.
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Old 09-25-2011, 03:30 PM   #105
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Although it has 20 in/lbs, it runs at a very slow speed. Not to sure I would consider that..
My understanding is that the speed only matters in terms of how long it takes to crush, at least on the low end. On the high end you risk shredding your grain. But on the low end, I don't think it matters. That's just what I've read, so if anyone has more information, please chime in to correct.

As far as speed, I crushed 32lbs of grain last weekend at 85 RPM. Didn't take long at all with my MM3 1.5" rollers. It was done in minutes. I pretty much had to stay right there as it was filling the bucket so fast.

The tradeoff with higher RPM's is lower torque. So I say go lower. I love knowing my mill won't be jamming on me. for $30, that motor is a pretty good deal. I have a nice bodine with lots of torque now, but it was 5 times that price.

Just a thought for those of you still designing your mills!
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Old 09-25-2011, 03:35 PM   #106
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Quote:
Originally Posted by pola0502ds View Post
This motor is way better then the other one I just commented on. It has a shlt load more torque but it still runs at a slower speed. If I am not mistaken, with RPMS there is a certain point where if it is running too slow it stops working well? I would choose this one over the other one. Looks like this motor runs at 80 RPM.
Yeah, honestly this is a good deal for someone looking for a mill motor. Plenty of torque for those tougher grains like wheat and carapils. I would've jumped at this one. $110 delivered for a new bodine motor in the right RPM and torque range is a solid deal. Oh well, at least I can say mine didn't require a capacitor, though I spent like $50 more and got 30 in/bs more torque.

No, I'm not the guy selling it.
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Old 09-25-2011, 04:55 PM   #107
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Quote:
Originally Posted by Dgonza9 View Post
HERE'S ANOTHER good motor and a nice price.

Although you'd have to buy the capacitor separately. Still...

My mill is built, but I'm still looking at motors on ebay. WTF?
I got one of those 42R5BFCI-E3 motors to make a mash stirrer with for the 60 gallon system a few years back for $65 on ebay, always wondered if it would make a good mill motor, now I know...... still in the box after putting a capacitor and cord on and testing (and daring my friends to try to stop the shaft with their bare hands ;-)
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Old 09-29-2011, 03:11 PM   #108
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Quote:
Originally Posted by Dgonza9 View Post
HERE'S ANOTHER good motor and a nice price.

Although you'd have to buy the capacitor separately. Still...

My mill is built, but I'm still looking at motors on ebay. WTF?

Thanks for the pointer. I received mine yesterday. I offered 75.00 and it was accepted. Fast shipper. Now I need to get the capacitor and coupler.

Looks like he still has 3 available.
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Old 09-29-2011, 08:06 PM   #109
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Originally Posted by pola0502ds View Post
If I am not mistaken, with RPMS there is a certain point where if it is running too slow it stops working well? I would choose this one over the other one. Looks like this motor runs at 80 RPM.
The only issue with a lower rpm motor is that it takes a bit longer to get the job done, but 80 rpm will work just fine. One nice benefit of a lower rpm motor is that it will generate much less dust. The most important thing is to have sufficient torque and generally, 50 inch-lbs is about the minimum recommended for most mills. You can get buy with somewhat less torque, but you may have trouble milling from a dead stop with a full hopper. 100-200 rpm would be ideal IMO and above 300 rpm not so much. You can compensate for a higher rpm motor by widening the mill gap a bit to reduce shredding issues, but you would still have to deal with the flour dust. I'm running with a 115 rpm Bodine @ 68 inch-lbs of torque. Works perfectly. A bit on the slow side, but it requires no attention when milling, so I just fill the hopper and let 'er rip while I do something else. Even a large grain bill for a 12 gallon batch only takes about 15-20 minutes to mill. The slower speed really isn't even a minor inconvenience.
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Old 10-01-2011, 10:27 PM   #110
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Can anyone tell me how to wire this? I would like to have a single switch with Fwd/Off/Rev.

motor-wiring..jpg  
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