Get your HBT Growlers, Shirts and Membership before the Rush!


Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > BIAB 7.5 gal brew kettle big enough for 5 gal batch?
Reply
 
LinkBack Thread Tools
Old 02-24-2012, 01:28 PM   #1
Chaddyb
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2010
Location: Minnesota
Posts: 175
Liked 7 Times on 7 Posts
Likes Given: 1

Default BIAB 7.5 gal brew kettle big enough for 5 gal batch?

Im picking up a turkey fryer, and im wondering if i can cram a 5 gallon BIAB batch in a 7.5 gal kettle, or if i should just suck it up and get a 10 gallon kettle or keggle?

__________________

Kegged: Grand cru, Ferocious IPA
Bottled: Java stout, Hanks hefeweizen, Grand cru
Primary: Chocolate milk stout, pumpkin ale, Belgian Wit
Secondary: Coffee brown ale
Next Up: ?

Chaddyb is offline
 
Reply With Quote Quick reply to this message
Old 02-24-2012, 01:33 PM   #2
RM-MN
HBT_SUPPORTER.png
Feedback Score: 1 reviews
Recipes 
 
Join Date: Nov 2010
Location: Solway, MN
Posts: 7,150
Liked 856 Times on 713 Posts
Likes Given: 319

Default

I've done it but the wort was half an inch from the rim when I stirred (carefully) in the last of the grain. This was on a 1.05 gravity batch so if you want a higher gravity batch the answer is no. You can modify the BIAB technique to do higher gravity batches if you have another pan or pot by doing a dunk sparge step or a pour through sparge.

The other option is to do a slightly smaller batch. I do 2 1/2 to 3 gallon batches in my 5 gallon pot too. In your 7.5 gallon pot you should be able to do a 4 to 4.5 gallon batch easily.

__________________
RM-MN is offline
 
Reply With Quote Quick reply to this message
Old 02-24-2012, 01:34 PM   #3
TromboneGuy
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2011
Location: Wichita, KS
Posts: 278
Liked 5 Times on 4 Posts

Default

I have an 8 gallon that works fine for BIAB. You just won't be able to get more than about 1.060 OG.

__________________
TromboneGuy is offline
 
Reply With Quote Quick reply to this message
Old 02-24-2012, 01:56 PM   #4
wilserbrewer
Sponsor
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 9 reviews
 
wilserbrewer's Avatar
Recipes 
 
Join Date: May 2007
Location: Jersey Shore, Jersey
Posts: 7,299
Liked 575 Times on 470 Posts
Likes Given: 11

Default

Sure it can be done, but you will be living near the top of the kettle for both the mash and boil (Now that you have been warned). The rackers calculator here....http://rackers.org/calcs.shtml/ indicates that with 12 lb of grain at 2.2 qt/lb your total mash volume will be 7.5 gal. The grain will absorb about 1 gallons so you will be left with about 5.6 gallons pre boil. I would guess with the kettle filled to the rim during the mash you could get a bit more. To collect more wort if needed, you could do a dunk sparge of the bag in either another pot or a bucket.

wilserbrewer is offline
 
Reply With Quote Quick reply to this message
Old 02-24-2012, 02:13 PM   #5
Challenger440
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2009
Location: Columbus, OH
Posts: 299
Liked 8 Times on 8 Posts
Likes Given: 4

Default

I do all the time, but I do a modified BIAB (ie I sparge). I pull the bag out and toss it in a bottling bucket. Then I sparge through the bottling bucket. It allows me to mash out properly and use a normal qt/lb level and I can hit those higher OG's if I desire.

__________________

Keg #1: Oatmeal Stout (WLP004)
Keg #2: Oatmeal Stout (WLP037)
Keg #3: Denny Conn's Bourbon Vanilla Porter
Keg #4: Empty
Bottled: Apfelwein, Scottish 60/-
On Deck: Simtennial Pale Ale

Challenger440 is offline
 
Reply With Quote Quick reply to this message
Old 02-24-2012, 02:49 PM   #6
Chaddyb
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2010
Location: Minnesota
Posts: 175
Liked 7 Times on 7 Posts
Likes Given: 1

Default

I'm only planning on doing a couple 2.5 gallon batches to get used to AG, but if I can stretch it for a little while I would like to maybe do a basic wheat or brown 5 gallon batch to fill my kegs. I'm not gonna plan on using a 7.5 forever, it would just buy me some time till I get a 10gal + kettle. For anything real high gravity I will most likely only do 2.5 gal batches.

__________________

Kegged: Grand cru, Ferocious IPA
Bottled: Java stout, Hanks hefeweizen, Grand cru
Primary: Chocolate milk stout, pumpkin ale, Belgian Wit
Secondary: Coffee brown ale
Next Up: ?

Chaddyb is offline
 
Reply With Quote Quick reply to this message
Old 02-24-2012, 02:50 PM   #7
Chaddyb
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2010
Location: Minnesota
Posts: 175
Liked 7 Times on 7 Posts
Likes Given: 1

Default

Quote:
Originally Posted by Challenger440 View Post
I do all the time, but I do a modified BIAB (ie I sparge). I pull the bag out and toss it in a bottling bucket. Then I sparge through the bottling bucket. It allows me to mash out properly and use a normal qt/lb level and I can hit those higher OG's if I desire.
I've thought about this too, but having never done it, I'm not sure how to calculate the water.
__________________

Kegged: Grand cru, Ferocious IPA
Bottled: Java stout, Hanks hefeweizen, Grand cru
Primary: Chocolate milk stout, pumpkin ale, Belgian Wit
Secondary: Coffee brown ale
Next Up: ?

Chaddyb is offline
 
Reply With Quote Quick reply to this message
Old 02-24-2012, 03:46 PM   #8
bschoenb
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2010
Location: Grand Rapids, Michigan
Posts: 323
Liked 3 Times on 3 Posts
Likes Given: 4

Default

yes;
I can't fit all my water in my kettle for my batch size either. So, I put in as much water as I can; I mash, lift the bag a bit and mash out. While the bag is hanging and draining over the kettle I start the boil and add the remaining room temp water needed for a full boil (about 1 1/2 Gallon).
I use Beersmith to calc all this out wrt strike water temp, grain weight, etc

__________________

~ BIAB : All Grain Made Easy ; Mash, Sparge, Boil all in the same Kettle ~ all you need is a bag and a hook!

bschoenb is offline
 
Reply With Quote Quick reply to this message
Old 02-24-2012, 04:05 PM   #9
Chaddyb
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2010
Location: Minnesota
Posts: 175
Liked 7 Times on 7 Posts
Likes Given: 1

Default

Quote:
Originally Posted by bschoenb View Post
yes;
I can't fit all my water in my kettle for my batch size either. So, I put in as much water as I can; I mash, lift the bag a bit and mash out. While the bag is hanging and draining over the kettle I start the boil and add the remaining room temp water needed for a full boil (about 1 1/2 Gallon).
I use Beersmith to calc all this out wrt strike water temp, grain weight, etc
How far into the boil do you add the water?
__________________

Kegged: Grand cru, Ferocious IPA
Bottled: Java stout, Hanks hefeweizen, Grand cru
Primary: Chocolate milk stout, pumpkin ale, Belgian Wit
Secondary: Coffee brown ale
Next Up: ?

Chaddyb is offline
 
Reply With Quote Quick reply to this message
Old 02-24-2012, 04:08 PM   #10
bschoenb
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2010
Location: Grand Rapids, Michigan
Posts: 323
Liked 3 Times on 3 Posts
Likes Given: 4

Default

I usally add the water as my water is heating up before boil; that way I'm all mixed in and I can check my Pre-boil "calcualted" gravity prior to Boil so I know if I have to boil "viqourously" or slower to hit my target target OG

__________________

~ BIAB : All Grain Made Easy ; Mash, Sparge, Boil all in the same Kettle ~ all you need is a bag and a hook!

bschoenb 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
BIAB 5 gallon batch with 9 gallon kettle Beer-lord All Grain & Partial Mash Brewing 13 10-26-2012 11:58 PM
BIAB W/ 9gal kettle? Bewbzout All Grain & Partial Mash Brewing 5 10-11-2011 05:17 AM
10 BIAB Batch in 10.5 Gallon kettle? jsloan00 All Grain & Partial Mash Brewing 8 05-26-2011 03:16 AM
Weldless Thermometer for BIAB Kettle 7mmSTW All Grain & Partial Mash Brewing 1 11-11-2010 09:13 PM
BIAB Kettle Draining Challenges jeffmeh All Grain & Partial Mash Brewing 2 06-21-2010 03:56 AM



Newest Threads

LATEST SPONSOR DEALS