Home Brew Forums > Home Brewing Beer > DIY Projects > Other > Grain mill shaft and lovejoy couplings
Reply
 
LinkBack Thread Tools
Old 09-08-2014, 07:27 PM   #41
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 3 reviews
 
Bobby_M's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Whitehouse Station, NJ
Posts: 22,429
Liked 1140 Times on 760 Posts
Likes Given: 28

Default

Maybe it will help someone else trying to do this, but with my MM2-2.0, I tested that it takes about 17 revolutions to run 1 pound of grain through. I tried to maintain a constant 60 or so RPM but it's hard with a drill. I counted out 17 turns. Even if you round it up to 20 revs per pound, that's 3lbs per minute at 60 RPM. A 12 pound grain bill in 4 minutes at 60 RPM or 3 minutes at 90 RPM. Since I have a big ass hopper, I can let it run.

__________________
BrewHardware.com has a new website. Please check it out and let me know what you think!
New 100% Stainless Steel Heating Elements are IN! ULWD Ripple and 1500 watt versions coming soon
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc. Did you know we are also now a full service homebrew shop selling malt, hops, yeast (Wyeast), etc?
Bobby_M is offline
 
Reply With Quote Quick reply to this message
Old 09-08-2014, 07:36 PM   #42
AnOldUR
fer-men-TAY-shuhn
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
AnOldUR's Avatar
Recipes 
 
Join Date: Mar 2007
Location: New Jersey
Posts: 6,565
Liked 698 Times on 507 Posts
Likes Given: 527

Default

__________________
Sent from my POS computer because I refuse to own a smartphone!

Reason: . . . to give me time to find something
AnOldUR is offline
 
Reply With Quote Quick reply to this message
Old 09-09-2014, 07:52 AM   #43
Smellyglove
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2013
Posts: 683
Liked 42 Times on 41 Posts
Likes Given: 6

Default

Quote:
Originally Posted by anoldur View Post
that's equal to about 380rpm with a 1-1/4" roller mill. Still a reasonable number. To a large extent, it's about how happy you are with the results of your crush. Too fast can shred the husks and effect lautering.

The earlier discussion had more to do with hp requirements and that larger rollers will require a higher horsepower motor for the same rpm at the roller. If you're not stalling you mill, you're good.



Edit to answer your question:
You're milling at about 125 sfm
(is my machinist is showing through? )
sfm?
__________________
Smellyglove is offline
 
Reply With Quote Quick reply to this message
Old 09-09-2014, 12:37 PM   #44
AnOldUR
fer-men-TAY-shuhn
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
AnOldUR's Avatar
Recipes 
 
Join Date: Mar 2007
Location: New Jersey
Posts: 6,565
Liked 698 Times on 507 Posts
Likes Given: 527

Default

Quote:
Originally Posted by Smellyglove View Post
sfm?
Surface Feet per Minute. It's the rate that the surfaces pass each other at the contact point measured in feet per minute. In this case it's based on the circumference of the rollers, but one object could be stationary.
__________________
Sent from my POS computer because I refuse to own a smartphone!
AnOldUR is offline
 
Reply With Quote Quick reply to this message
Old 09-10-2014, 06:22 PM   #45
Smellyglove
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2013
Posts: 683
Liked 42 Times on 41 Posts
Likes Given: 6

Default

So I'm actually at double speed of what's recommended. Damn that I didn't think about physics before I got the motor.

__________________
Smellyglove is offline
 
Reply With Quote Quick reply to this message
Old 09-10-2014, 07:21 PM   #46
AnOldUR
fer-men-TAY-shuhn
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
AnOldUR's Avatar
Recipes 
 
Join Date: Mar 2007
Location: New Jersey
Posts: 6,565
Liked 698 Times on 507 Posts
Likes Given: 527

Default

Lot of people run them that speed and faster using a pistol drill. If you're happy with your beer and your lauter, there's no need to change it.

__________________
Sent from my POS computer because I refuse to own a smartphone!
AnOldUR is offline
 
Reply With Quote Quick reply to this message
Old 09-13-2014, 05:03 PM   #47
sandyeggoxj
Feedback Score: 2 reviews
Recipes 
 
Join Date: Jan 2011
Location: Sunshine and Big Holes
Posts: 2,156
Liked 275 Times on 202 Posts

Default

Quote:
Originally Posted by Smellyglove View Post
I'm living in Norway, EU so I guess it won't help you much. But I found one on what would be CG for you guys.

As a (a bit funny sidenote) I found a guy who has over 40 metric tonnes of motors stowed away in almost every corner in his house, yard, garage, shed and you name it. Picture an Emmet Brown from Back To The Future, but with motors. An eccentric guy. After about 30 minutes about motor-talk, which I know nothing about, I sort of hinted that I should be going by getting back into my car. Mr Brown here didn't stop talking so I had to roll down my window (after I startet the engine) and continued to talk with him as I was slowly pulling out of his driveway as he walked by the car almost sticking his head into my window. Great guy.
Ah yes, Norway! My ancestors hail from Norway.

I would like to meet that guy!! I keep checking my local classifieds hoping to score a motor. Someday.
__________________

*Everything I say is fully substantiated by my own opinion

sandyeggoxj is offline
 
Reply With Quote Quick reply to this message
Old 09-15-2014, 07:59 PM   #48
Smellyglove
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2013
Posts: 683
Liked 42 Times on 41 Posts
Likes Given: 6

Default

Quote:
Originally Posted by sandyeggoxj View Post
Ah yes, Norway! My ancestors hail from Norway.

I would like to meet that guy!! I keep checking my local classifieds hoping to score a motor. Someday.
You'd end up a bit wiser when it comes to gears. For instance that some excavators only have 60-90 HP engines, but with all that gear reduction they are able to lift stuff clocking in at over two metric tonnes.
__________________
Smellyglove is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to affix cordless drill chuck to grain mill shaft? SpeedYellow Equipment/Sanitation 4 07-20-2013 09:35 PM
Monster Mill mm-3 drive shaft wear kds1398 Equipment/Sanitation 20 10-15-2012 12:07 AM
Motorized Grain Mill shaft support cpatel479 Other 2 05-18-2012 07:56 PM
Need Shaft Coupling to make motorized mill Willie3 Other 2 12-29-2011 05:46 AM
Motorized Grain Mill - Drive Shaft Questions kevmo Other 7 12-01-2011 04:38 PM



Newest Threads

LATEST SPONSOR DEALS