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brewyourown4life · 01-04-2013, 06:34 PM

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**jeepinjeepin** · 01-04-2013, 07:10 PM

Quote:

Originally Posted by Kyled93

So it may take longer, but 85 rpm ought to be fine?

As far as the torque the conversion from 90 N*m to ft lbs it's approximately 66 ft.lbs.

I assume that should be sufficient for a MM3?

Yeah I got the ft.lb conversion and I know what pulling that on a torque wrench feels like. Comparing that to a pull on a hand crank for a mill doesn't even compare. A normal person would be spent in just a few rounds. I was trying to find a required torque instead of a recommended HP. Somebody that knew what they are doing might could convert N*m or ft.lbs to ft.lb/hr to HP. I was just trying to figure how much you could overdrive.

Short answer: 66 ft.lbs is a gracious plenty. And 85rpm while a bit slow will crush just fine.

I've been thinking about how to attach a torque wrench to my MM3 input shaft. Maybe I have a broken drill chuck somewhere? If I do I'll load up some wheat and give out some numbers.

**Hoppopotomus** · 01-04-2013, 08:52 PM

Quote:

Originally Posted by AnOldUR

After looking at the Hoppopotomus set-up I'm embarrassed to show the rest of mine. That's the stuff I dream about. Great job!

Anyway, here's my project ready to do some work. Made the coupling for between the gearmotor and mill. Had to change the electric enclosure to a Radio Shack project box. The large capacitor wouldn't fit in the small box. The upper switch is the on/off. The lower is forward/reverse incase it gets jammed.

Edit to add the crush picture with gap set at about .038. Looks pretty good to me.

.

Thanks man, I appreciate the compliment! Your's is much better built than mine for sure. I'm just using a simple Barley Crusher mill with a big azz 12" pulley on the mill and an old GE 1/3 hp motor (1725 rpm) with a 1 1/2" pulley to get my rpms down to 215 ish. I just hid everything in a cabinet dressed with knotty pine, cedar logs, and stone tops to match my other brewing related projects. It's just lipstick on a pig!

ong · 01-07-2013, 04:10 PM

Quote:

Originally Posted by Fordzilla

Nice! I've been wanting to build my own mill but roller mills are so damn expensive. How well does that work? I've been wondering if I could power a corona mill with the clothes drier motor I have.

It works... OK? I'm sure it doesn't compare to a roller mill, but for BIAB where I'm not worried about stuck sparges, it's fine! It definitely takes quite a bit of torque, especially on the cornmeal like crush setting I've been using.

It's a old US made mill that I bought on eBay for about 20 bucks shipped. The drill is a crappy harbor freight number that I've had sitting around for a few years. For that price, I'm not complaining. The drill smokes like crazy and stinks up the house, but I'm about to stink up the house with wort anyhow, so I guess it doesn't really matter.

**Huaco** · 01-07-2013, 04:20 PM

ong
If your drill is smoking and "stinking up the house" there is something wrong! Please don't risk catching it, yourself, or your house on fire! Drills are cheap. New skin and Houses - not so much...

ong · 01-11-2013, 06:51 AM

Quote:

Originally Posted by Huaco

ong
If your drill is smoking and "stinking up the house" there is something wrong! Please don't risk catching it, yourself, or your house on fire! Drills are cheap. New skin and Houses - not so much...

Eh, it's just the ineffable magic of disposable Harbor Freight power tools! This drill has smoked since I bought it... Just crappy motor windings. Eventually it will stop working, but it's held out surprisingly long. I had a Cuisinart stick blender that smelled of burning plastic every time I used it, and that lasted 14 years.

**Slow_Day** · 01-13-2013, 04:08 AM

Here is my new mill. MM2 powered by a vintage 1/2" drill. The drill runs about 400 rpm, so I am using a belt drive to reduce to 200 rpm.

Most everything but the mill, one pulley and bronze bushings is made from material I had laying around. The belt tensioner consists of two 2 x 4s, a drill bit and a bronze bushing.

This thing busted through two 11 pound grain bills in the past week. I will probably clean it up a little more, but I am pretty happy with it.

**Hang Glider** · 01-13-2013, 02:53 PM

Vintage drill, yes. Vintage treadle sewing machine base, yes. cool? YES!

dcbc · 01-13-2013, 08:03 PM

Here's mine. Sure beats my old hand crank or drill.

**AnOldUR** · 01-13-2013, 08:33 PM

Looks like the same gear motor I'm using (177rpm 40 in-lbs) except there's a shaft extending out the back of mine. Did you get that from Surplus Center? Got mine quite a while ago. Don't believe they have it anymore.