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Old 03-29-2013, 03:33 AM   #1
mrstevenund
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Default MM2 Mill powered with Garage Door Opener?

I bought a MM2 two weeks ago and now have the job of building a hopper/stand and motorizing it. I'm not so keen on the idea of a 1725rpm motor with a 12inch pulley on it. I'd prefer something more compact.

I haven't found a whole lot of information on using a garage door opener to power a mill. I found at http://www.surpluscenter.com/item.as...=1&item=5-1677 which has the worm gear assembly to output 110RPM. (Little slower than MM's recommended 150-250 RPM, but I've read slower is better)

Working under the assumption that the output shaft is on the bottom, my thought was to crease and bend the metal plate 90 degrees up, and bolt this face downward making the shaft horizontal. I haven't decided whether a small sprocket/chain or direct drive would be better, or if this motor would even work. I realize garage door openers are designed for around 5 operations per hour, and milling would be like 5 minutes total (maybe over estimating. I'm only set up for 5G batches)

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Old 03-29-2013, 05:52 AM   #2
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It's not too bad to hide the pulley half in the cabinet. I'll upload a video of mine.

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Old 03-29-2013, 09:29 PM   #3
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I'm thinking you're going to strip the plastic worm gear in short order. Garage doors use counter-balance springs and don't really do that much work.

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Old 03-29-2013, 10:05 PM   #4
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Quote:
Originally Posted by evandena View Post
It's not too bad to hide the pulley half in the cabinet. I'll upload a video of mine.
http://m.youtube.com/watch?v=PHzXBEfiCoQ
You got that bad boy spark proofed? Grain dust, commonly known as flour, is quite explosive. It would be safer to have the motor above, IMO.
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Old 03-30-2013, 04:09 PM   #5
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You got that bad boy spark proofed? Grain dust, commonly known as flour, is quite explosive. It would be safer to have the motor above, IMO.
It's what they call "Totally Enclosed Fan Cooled Motor"
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Old 05-06-2013, 12:21 PM   #6
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Necroing the thread a little, but I realized after burning up my drill that I have a spare 1/2 HP garage door opener that I might be able to harvest the motor out of. mrstevenund, did you manage to make this work with the garage door opener motor? How did it work?

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Old 05-07-2013, 11:56 AM   #7
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No, this project got moved to the back burner, and I am still looking for a free garage door motor.

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Old 06-17-2013, 02:18 PM   #8
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Any action on this since May? If not, $10 is pretty tempting for a mounted motor that's already geared down to the right RPM range (+$13 shipping). I might have to give it a try...

If the motor pukes, I'm only out $23. Anybody already been down this road?

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Old 06-18-2013, 01:25 PM   #9
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No. I unfortunately didn't see any motors out (or had already been taken by scrap dealers) during our city's clean-up week. Between that and all my brewing equipment now in storage, it may be a while.

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Old 06-24-2013, 10:36 PM   #10
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I went ahead and tried this out and so far, so good. Midwest forgot to ship the hopper along with my mill, so I'm waiting on that for a full test, but I was able to pour some wheat malt into the mill and start it up successfully. I'll post a few pics below, and will update once I've done a proper test. Can't confirm yet that this works without crushing a full batch, but it's looking good so far. If this ends up working, I'll post more pics on how it's built.

Mounted to an old stereo cabinet I picked up at goodwill:

mill1.jpg   mill2.jpg  
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