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Old 06-15-2012, 02:22 AM   #1
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Default Corona mill motor speed?

I am looking into creating a belt and pulley wheel system for my corona mill. Recently stepped up to 10 gallon batches & am finding crushing 20 + pounds of grain w/ the hand drill to be pretty annoying. Has anyone built a similar system? And if so what would you suggest for a good RPM range?


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Old 06-15-2012, 02:39 AM   #2
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I just got a Corona mill too. I used my hammer drill on it last week, and I let it go full speed! I'm thinking it was too fast. I think I'll get a better crush if I slow it down a bit. It seems to pulverize it more when I run it full speed. I tried slowing it down a little, and I got less flour. I will admit that either way I get thru 20 lbs in no time flat!


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Old 06-15-2012, 02:53 AM   #3
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I use the Harbor freight D handle drill, 1/2" w/ gobs of power. I would guess it spins 2-400 rpms and works well, about 35 bucks on sale. Belt and pulley will work as well, but will likely cost 100 bucks. Put a guard on the belt if you like all 10 fingers. For the money and simplicity...the HF drill is hard to beat IMHO.

http://www.harborfreight.com/1-2-hal...ill-47991.html

or this is a favorite as well for 10 more
http://www.harborfreight.com/1-2-hal...ill-93632.html
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Old 06-15-2012, 03:35 PM   #4
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Originally Posted by wilserbrewer View Post
I use the Harbor freight D handle drill, 1/2" w/ gobs of power. I would guess it spins 2-400 rpms and works well, about 35 bucks on sale. Belt and pulley will work as well, but will likely cost 100 bucks. Put a guard on the belt if you like all 10 fingers. For the money and simplicity...the HF drill is hard to beat IMHO.

http://www.harborfreight.com/1-2-hal...ill-47991.html

or this is a favorite as well for 10 more
http://www.harborfreight.com/1-2-hal...ill-93632.html
I use the first drill linked here. Run it on slowest speed on dial, lock trigger, done. Guessing it runs about 200RPM which is ideal speed for milling.
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Old 06-22-2012, 11:01 AM   #5
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With the HF drills is there enough torque, are people having any trouble with the mill jamming? I'm planning in scooping one after work today to build a mill this weekend. It seems like a no-brainer when comparing the drill to a motor with all the pulleys. (Even though that would probably be a fun project)

Do the drills come with an auto trigger lock or what are people using to keep it spinning? Zip tie?

Thanks for any info,

Corey
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Old 06-22-2012, 01:47 PM   #6
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Originally Posted by smittygouv30 View Post
With the HF drills is there enough torque, are people having any trouble with the mill jamming? I'm planning in scooping one after work today to build a mill this weekend. It seems like a no-brainer when comparing the drill to a motor with all the pulleys. (Even though that would probably be a fun project)

Do the drills come with an auto trigger lock or what are people using to keep it spinning? Zip tie?

Thanks for any info,

Corey
My cordless drill couldn't handle it. It would jam. I was surprised, because that thing is a beast! So, instead I use my hammer drill, and it doesn't get jammed. Even at a slow speed it's done in a couple minutes (12lb grain bill), so I don't think you really need a trigger lock.
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Old 06-22-2012, 02:08 PM   #7
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With the HF drills is there enough torque...Do the drills come with an auto trigger lock....
Yes and yes, plenty of power to spare and a trigger lock and speed adjustment on the D-handle drill...currently on sale for $35, not sure if you can get a 20% off coupon as well....cheap either way IMH.

coupon http://images.harborfreight.com/hftw.../images/22.jpg
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Old 06-22-2012, 03:00 PM   #8
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It's a 10Amp drill...it gotz nutz
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Open log Fermenting and gas-can secondary?? I am planning my next brew right now!!
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Old 06-22-2012, 03:23 PM   #9
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It's a 10Amp drill...it gotz nutz
Yea, that's confirmed! I hit what I think was a little stone in a grainbill one day while milling, the mill locked up but the drill spun out of my unsuspecting hands and spun wildly for a few revs, fortunately the cord was winding around the spinning monster and freed itself from the outlet...keep a firm grip on this drill, it can surprise ya
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Old 06-22-2012, 05:31 PM   #10
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Sweet! Thanks for the responses. I just scooped up the 1/2" HD low speed drill for 38$! That includes tax. They accepted the 20% coupon posted! Can't wait to get it set-up to mill through the grains for the white IPA I'm brewing tomorrow.


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