Kegconnection Complete Starter Kit and More Giveaway!


Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Faster milling = Higher efficiency?!

Reply
 
LinkBack Thread Tools
Old 10-20-2008, 01:47 AM   #1
Zymurgrafi
Feedback Score: 0 reviews
 
Zymurgrafi's Avatar
Recipes 
 
Join Date: Feb 2007
Location: NEK, VT
Posts: 2,453
Liked 10 Times on 10 Posts

Default Faster milling = Higher efficiency?!

Uh, that is what it seems like.

Had hooked a cordless drill (r.i.p.) to my Corona mill (I don't want to hear about it! Works for me) and it worked well. Until the useless drill finally died. So back to hand cranking. Was originally getting 60% efficiency whether hand cranking or using the drill. One day I tweaked the tightening screw on the plates a bit for the hell of it. 70% efficiency.

Tired of going through cordless drills I bought a corded drill recently because I needed it around the house. Last 2 brews I used it on the drill. Wicked faster than my cordless ever was even not at full bore (variable speed). Last 2 brews were also 75% efficiency!

Does speed have an affect on efficiency?

__________________

sláinte!

Bristle Bros. Brewing

Zymurgrafi is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 02:00 AM   #2
jay4e
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2008
Posts: 102
Default

my best guess would be the higher torque of the drill is pushing grain through harder and effectively crushing the grain against itself as well as the mill.

__________________
jay4e is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 02:05 AM   #3
eschatz
Feedback Score: 0 reviews
 
eschatz's Avatar
Recipes 
 
Join Date: Dec 2007
Location: Terre Haute, IN
Posts: 3,466
Liked 29 Times on 16 Posts

Default

Quote:
Originally Posted by jay4e View Post
my best guess would be the higher torque of the drill is pushing grain through harder and effectively crushing the grain against itself as well as the mill.
+1 It doesn't make any sense. We know that if the gap is the same that you would extract the same amount of sugar, creating your efficiency. It is possible that your faster milling can up your points. However, only if the gap changes with how fast you mill. Maybe that's a Corona mill thing. You've said that it works for you, which I believe. Now you just need to figure out how it works.
__________________
play the bass, brew the beer

What's tappening? :D
eschatz is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 11:32 AM   #4
psedillo
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
psedillo's Avatar
Recipes 
 
Join Date: Oct 2008
Location: Houston, TX
Posts: 11
Default

I had the exact same problem you did regarding the cordless drill. Yesterday we went through two batteries and enough was enough. I grabbed my corded drill and it was like night and day.

Here is a couple of pictures:





__________________
psedillo is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 11:33 AM   #5
Zymurgrafi
Feedback Score: 0 reviews
 
Zymurgrafi's Avatar
Recipes 
 
Join Date: Feb 2007
Location: NEK, VT
Posts: 2,453
Liked 10 Times on 10 Posts

Default

Did you get a higher efficiency?

__________________

sláinte!

Bristle Bros. Brewing

Zymurgrafi is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 11:47 AM   #6
psedillo
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
psedillo's Avatar
Recipes 
 
Join Date: Oct 2008
Location: Houston, TX
Posts: 11
Default

Not sure as it was my very first all grain brew.

__________________
psedillo is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 02:50 PM   #7
brrman
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2006
Location: Indianapolis, IN, Indiana
Posts: 1,428
Liked 30 Times on 25 Posts
Likes Given: 18

Default

I started using a corded drill a month ago (did about 5 batches with cordless drill) and my efficiency went from %70 to %80. The grain mills SOOO much faster it is insane. It almost made me question if I had done something wrong...

__________________
* My Bar Build
8-Paws Brewing Co.
On tap:
. SN Tumbler Clone
. Nierra Sevada
Secondary:
Primary:
. SN Tumbler Clone 10g
. Sycamore Oatmeal Porter 10g
. Nierra Sevada 10g
On Deck:
.
Kegged:
.

Being a perfectionist does not make one perfect.
brrman is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 02:57 PM   #8
Calico Jack
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2007
Location: Medford, MA
Posts: 177
Liked 1 Times on 1 Posts
Likes Given: 2

Default

Since I purchased my barley crusher I've used a corded drill. I have noticed an increase of about 10% from the mill at my LHBS to my own. But I'm not sure the milling speed would increase your efficiency.

__________________

Don't try and church it up boy.

Calico Jack is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 04:21 PM   #9
jcb317
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2007
Location: Bethlehem PA
Posts: 123
Liked 1 Times on 1 Posts

Default

I remember hearing before that if you mill using a drill you should try to run the drill as slow as you can with out stalling. I think it had something to do with shredding the grain rather than crushing if you run it to fast.

__________________
jcb317 is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 04:30 PM   #10
Zymurgrafi
Feedback Score: 0 reviews
 
Zymurgrafi's Avatar
Recipes 
 
Join Date: Feb 2007
Location: NEK, VT
Posts: 2,453
Liked 10 Times on 10 Posts

Default

Quote:
Originally Posted by jcb317 View Post
I remember hearing before that if you mill using a drill you should try to run the drill as slow as you can with out stalling. I think it had something to do with shredding the grain rather than crushing if you run it to fast.
yeah, as I said I did not run it at top speed. Regardless it was faster. Have not had any flavor problems from tannin extraction and the husks are no more torn then usual.
__________________

sláinte!

Bristle Bros. Brewing

Zymurgrafi 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
Does Thinner Mash = Higher Efficiency? VTBrewer All Grain & Partial Mash Brewing 5 09-27-2009 12:09 PM
Finally... a much higher efficiency! ikonis All Grain & Partial Mash Brewing 10 05-23-2009 09:01 PM
Pre-boil efficiency higher than post-boil??? bearymore All Grain & Partial Mash Brewing 4 09-18-2008 07:25 PM
Higher pre-boil efficiency jacksonbrown All Grain & Partial Mash Brewing 2 04-18-2008 08:48 PM
Boiler efficiency is higher? maltMonkey All Grain & Partial Mash Brewing 3 04-10-2008 02:53 PM