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big_al_in_k-zoo · 12-19-2010, 04:29 AM

Hey, wanting to motorize my maltmill. Is this motor up to par?

http://cgi.ebay.com/G588-Marathon-Electric-5-HP-208-230-460V-AC-Motor-NEW-/380300278874?pt=LH_DefaultDomain_0&hash=item588ba9 bc5a

**BrewBeemer** · 12-19-2010, 04:40 AM

Do you have 3 phase at your house or live and mill in a Industrial building with 3 phase power? Single phase is available for residental homes.
I find that price way out of line, i've thrown away many motors larger than that in 3 phase.
Single phase or better uet a gearmotor in single phase would work much better around 1/3 hp.

Go thru junk for washing machines and grab a 1725 rpm 1/3 hp motor from it free.
Better yet a curbside tradmill it has a avriable speed 90 VDC 1 1/2 to 3 HP constant speed motors that have a LED shutter window to maintain constant speed no matter the torque load demand.

**ThreeDogsNE** · 12-19-2010, 04:58 AM

http://www.surpluscenter.com/item.asp?item=10-2550&catname=electric

Quite a bit more reasonable in price, and the slower speed makes it easier to get the speed less reduction you'll need. And it's single phase. I had a 1/4 horse motor lying around, so I use that on my Monster Mill. I've had the belt slip, but not had the motor bog down.

**BrewBeemer** · 12-19-2010, 07:27 AM

Quote:

Originally Posted by ThreeDogsNE

I've had the belt slip, but not had the motor bog down.

Use a 5 MM HTD srockets and belt, less tension and wear on the mill bushing plus no belt slippage.
http://torquetrans.com/pulleys/timing-pulleys/5mm.htm
http://www.vizamotors.com/volt-drive-belt-500mm-pitch-original-pi-29.html?osCsid=3dfc68a11e4903cca7a21a64fd5fc4df

**P-J** · 12-19-2010, 10:09 AM

Better yet: 177.7 RPM 115 VAC GEARMOTOR It is a reversable motor and is commonly used on grain mills.

By the way, direct drive setup - no belts and pulleys. And $40.

redalert · 12-19-2010, 11:43 AM

How about something like this?

http://cgi.ebay.com/220-RPM-115-VAC-REX-ENGINEERING-GEARMOTOR-5-1179-/380227085037?pt=LH_DefaultDomain_0&hash=item58874c e2ed#ht_1409wt_905

What would be the minimum in terms of HP and rpm?

Sawdustguy · 12-19-2010, 12:29 PM

Quote:

Originally Posted by P-J

Better yet: 177.7 RPM 115 VAC GEARMOTOR It is a reversable motor and is commonly used on grain mills.

By the way, direct drive setup - no belts and pulleys. And $40.

At 40 in-lbs it's kinda lite in the torque department.

**passedpawn** · 12-19-2010, 12:33 PM

While I admire you guys that build an ass-kicking powered mill stations, I just connect an AC 7A drill to my JSP Maltmill and it slices right through the grain without seizing.

I know, not as cool, I agree. Works flawlessly, though.

Alright, carry on with the build. I'm looking forward to pics!

FishFace · 12-19-2010, 03:52 PM

I scraped gears, and chain from a kids pedal car, welded up, made drill mounts and now my barley mill is drill powered. Total cost $0. I use this drill for a rod building lather motor and for other turning DIY things, it comes out easy, and has worked for this purpose and many others for 20 years. The drill fits on the plate that came with the mill and the whole thing rests on a 5gal bucket. Small footprint but does the job.

artbrau · 12-19-2010, 07:27 PM

Quote:

Originally Posted by passedpawn

I just connect an AC 7A drill to my JSP Maltmill and it slices right through the grain without seizing.

That's the setup I use but the problem is the flattened part of the JSP mill shaft where the handle set screw seats (at least my shaft is that way). The 3-piece chuck can't get a purchase that doesn't wobble when it turns. I can find an optimal position that doesn't wobble *a lot* but it's still a huge pain.