Mash tun capacity question - Home Brew Forums

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

Reply
 
Thread Tools
Old 02-20-2012, 05:02 PM   #1
maak_d
Recipes 
 
Sep 2011
Boston, MA
Posts: 8


For Christmas, I asked for and received a cooler that I hope to convert into a mash tun for my foray into all-grain brewing. Anyway, the cooler I received is the Coleman 70-Quart Xtreme Cooler.

I got it and I'm thinking that it is WAY too big for me. I'm currently brewing 5 gallon batches.

Should I not use this for my 5 gallon batches? Is there some modification that I can do to make it accommodate smaller batch sizes? Any help is appreciated.

 
Reply With Quote
Old 02-20-2012, 09:17 PM   #2
Schnitzengiggle
 
Schnitzengiggle's Avatar
Recipes 
 
Feb 2009
Tucson, AZ
Posts: 2,560
Liked 31 Times on 23 Posts


Look no further: http://www.homebrewtalk.com/f11/how-...-needs-123585/
__________________
follow me @ Broken Glass Brewery

Okham's Razor - simplest explanation is usually the correct one.

My DIY Kegerator - My DIY Fermentation Chamber - My DIY Portable Pump Box

 
Reply With Quote
Old 02-20-2012, 11:26 PM   #3
maak_d
Recipes 
 
Sep 2011
Boston, MA
Posts: 8

So, it looks like I might be able to get away with the 70 quart as long as I batch sparge. I may also want to get a piece of foam and cut it to fit the cooler to reduce that massive head space. Is that about right?

 
Reply With Quote
Old 02-21-2012, 12:15 AM   #4
tektonjp
Recipes 
 
Nov 2010
ohmihachiman, Japan
Posts: 816
Liked 89 Times on 66 Posts


Foam and/or some bubble packing to keep the heat in the mash. Lay some bubble wrap on top of the grain, then foam on top of that. Should help a lot.
__________________
"Beer, well respected and rightly consumed, can be a gift of God. It is one of his mysteries, which it was his delight to conceal and the glory of kings to search out."

The Search for God and Guinness by Stephen Mansfield

 
Reply With Quote
Old 02-21-2012, 12:16 AM   #5
Schnitzengiggle
 
Schnitzengiggle's Avatar
Recipes 
 
Feb 2009
Tucson, AZ
Posts: 2,560
Liked 31 Times on 23 Posts


Yeah, without some way to eat up some of the volume in your MLT, a 9 lb grain bill for a 5 gallon batch will yield sporadic temperatures.

FWIW, I have a 52qt Coleman Xtreme MLT, and with smaller grain bills and 5 gallon batches, I find that my grain bed has hot and cold spots, that never seem to equalize.

I can only hypothesize that the larger amount of headspace makes it difficult for temperatures to stabilize.

I normally brew 10 gallon batches, and have no problems with temperature fluctuations, but smaller grain bills with 5 gallon batches are problematic.

Finding a way to use foam or some sort of insulation to reduce the volume of headspace would likely solve that problem, however, I have yet to try it....I seldom brew 5 gallon batches any longer.
__________________
follow me @ Broken Glass Brewery

Okham's Razor - simplest explanation is usually the correct one.

My DIY Kegerator - My DIY Fermentation Chamber - My DIY Portable Pump Box

 
Reply With Quote
Old 02-21-2012, 02:41 PM   #6
maak_d
Recipes 
 
Sep 2011
Boston, MA
Posts: 8

Is there a particular type of foam that I should use? Or would any rigid foam insulation work?

 
Reply With Quote
Old 02-21-2012, 03:54 PM   #7
Schnitzengiggle
 
Schnitzengiggle's Avatar
Recipes 
 
Feb 2009
Tucson, AZ
Posts: 2,560
Liked 31 Times on 23 Posts


The pink or blue foam from HD or Lowes should work fine. Perhaps the sealed type with the plastic layer on it to help keep the flakes out of your mash.

I thought of doing the same thing and wrapping the foam with cellophane.
__________________
follow me @ Broken Glass Brewery

Okham's Razor - simplest explanation is usually the correct one.

My DIY Kegerator - My DIY Fermentation Chamber - My DIY Portable Pump Box

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Keggle capacity. CaptKaos Equipment/Sanitation 10 07-26-2011 01:59 PM
How Exactly Do You Define Brewing Capacity? TheWhaleShark Equipment/Sanitation 1 03-18-2010 07:25 PM
Kettle Capacity? Eskimo Spy Equipment/Sanitation 8 07-17-2008 12:44 PM
Heat capacity for BTP AdIn Equipment/Sanitation 0 05-15-2007 06:36 AM
New found Capacity/Equipment. olllllo Equipment/Sanitation 7 01-30-2007 01:01 AM


Forum Jump