Mash tun performance - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Mash tun performance

Reply
 
Thread Tools
Old 10-11-2008, 06:44 PM   #1
smizak
Recipes 
 
Dec 2007
Buffalo, NY
Posts: 1,827
Liked 110 Times on 80 Posts



For all who mash in converted coolers, how many degrees does your guys mash drop during an hour rest? In a test run with just water, mine dropped about 2.5 degrees over an hour, which seems kinda sucky.
__________________
"This song goes out to me because I'm so f*ckin' cool!"~John Reis

 
Reply With Quote
Old 10-11-2008, 06:49 PM   #2
The Pol
Recipes 
 
Feb 2007
Posts: 11,454
Liked 96 Times on 81 Posts


That is really good! When you have grain in there, you will see a little less, the grist will hold heat better than water will.

 
Reply With Quote
Old 10-11-2008, 07:46 PM   #3
talleymonster
 
talleymonster's Avatar
Recipes 
 
Dec 2005
Posts: 2,142
Liked 21 Times on 11 Posts


It all depends on your cooler, too. What kind of cooler do you have? With some coolers the lid is not insulated....it's just a hollow lid. If this is what you have, go to Home Depot or any other hoe store and buy a can of "Great Stuff". It is an expanding insulating foam. Drill a few holes in the top of the lid, spray a bunch in there and TADA!!!.....insulated lid.
__________________


 
Reply With Quote
Old 10-12-2008, 12:33 AM   #4
smizak
Recipes 
 
Dec 2007
Buffalo, NY
Posts: 1,827
Liked 110 Times on 80 Posts


Quote:
Originally Posted by talleymonster View Post
It all depends on your cooler, too. What kind of cooler do you have? With some coolers the lid is not insulated....it's just a hollow lid. If this is what you have, go to Home Depot or any other hoe store and buy a can of "Great Stuff". It is an expanding insulating foam. Drill a few holes in the top of the lid, spray a bunch in there and TADA!!!.....insulated lid.
I did that earlier this week actually. Great minds.....

Just wondered what the average performance of the converted cooler is. Mine is a 5 gal. cylindrical. And man, does "Great Stuff" make a mess. That stuff does NOT come off your hands. I had to raid my GF's nail polish remover to get rid of it. She's gonna be pissed.

and hoe store is funny.
__________________
"This song goes out to me because I'm so f*ckin' cool!"~John Reis

 
Reply With Quote
Old 10-12-2008, 04:20 AM   #5
talleymonster
 
talleymonster's Avatar
Recipes 
 
Dec 2005
Posts: 2,142
Liked 21 Times on 11 Posts


I'm a terrible typist. I hunt and peck all day. I never learned the "home row" as a kid.
__________________


 
Reply With Quote
Old 10-12-2008, 12:39 PM   #6
Brew-boy
 
Brew-boy's Avatar
Recipes 
 
May 2006
Lapeer, Michigan
Posts: 2,280
Liked 16 Times on 13 Posts


I used to loose 6-7 degrees with my blue square igloo but now that I used a can of "Great Stuff" in the lid, I only loose 1 degree.
__________________
Next:Smoked Pilsner.
Primary:Belgian Red, American Stout w/Roeselare
On Tap:Pale Ale, English Bitter
Aging: Imperial Oatmeal Stout on Vanilla beans.

I rather owe you a dollar than cheat you out of it.."Dad"

http://lapeerareabrewers.com/

http://groups.yahoo.com/group/LapeerAreaBrewers/

 
Reply With Quote
Old 10-12-2008, 01:32 PM   #7

A loss of 2.5 degrees over an hour is damn good using just water! As others have indicated, the grist will hold heat much better and you'll hold temps pretty closely. I expect a degree of loss over the hour.

Insulating the lid with GS works extremely well, but I've started using a piece of two-inch thick foam insulation cut to size and laid on top of the grainbill- didn't lose nary a degree.

 
Reply With Quote
Old 10-12-2008, 02:17 PM   #8
TeleTwanger
Recipes 
 
Sep 2008
Posts: 693
Liked 6 Times on 6 Posts


0 (with grain)
__________________
__________________________________________________
Primary: empty
Secondary: DogFish 60 Clone
Up next: The Bestist Bitter
Bottled: Blackout IPA


"Ooo Pretzels and Bier!"-Heidi Klum

 
Reply With Quote
Old 10-12-2008, 02:21 PM   #9
SILVER13ACK
Recipes 
 
Sep 2008
My House
Posts: 44

When you did your test run, did you pre-heat the cooler?

 
Reply With Quote
Old 10-12-2008, 02:29 PM   #10
smizak
Recipes 
 
Dec 2007
Buffalo, NY
Posts: 1,827
Liked 110 Times on 80 Posts


Yes I did, dumped in 185 degree water and let it chill for half on hour, then opened it and let it come to mash temp. I only used 3.75 gal, so I guess it works better than I thought.

Do you guys ever compensate for the temp drop? Say if it drops 2 degrees, mash in a degree higher than your goal so the average temp is at your rest temp?
__________________
"This song goes out to me because I'm so f*ckin' cool!"~John Reis

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
CFC Performance KatoBaggins Equipment/Sanitation 5 05-13-2009 11:57 AM
Improved burner performance. Orfy Equipment/Sanitation 13 09-25-2008 02:47 AM
Yeast performance Craig Stewart All Grain & Partial Mash Brewing 4 10-05-2007 01:30 PM
First mini-mash performance anxiety and a Beta-Glucanase Rest Chris_K All Grain & Partial Mash Brewing 2 10-30-2006 01:09 AM
Improving chiller performance? Steve973 Equipment/Sanitation 12 08-04-2006 01:30 AM


Forum Jump