Kegconnection Complete Starter Kit and More Giveaway!


Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > original gravity

Reply
 
LinkBack Thread Tools
Old 11-22-2010, 06:07 PM   #1
steve25
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2010
Location: michigan
Posts: 25
Default original gravity

how much higher will o.g. be after boil, compared to out of mash tun?

__________________
steve25 is offline
 
Reply With Quote Quick reply to this message
Old 11-22-2010, 06:12 PM   #2
Walker
I use secondaries. :p
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Walker's Avatar
Recipes 
 
Join Date: Sep 2005
Location: Cary, NC
Posts: 11,235
Liked 72 Times on 64 Posts
Likes Given: 11

Default

Quote:
Originally Posted by steve25 View Post
how much higher will o.g. be after boil, compared to out of mash tun?
it depends on how much volume you have before and after the boil.

example:

if you measure 1.040 gravity in 7 gallons of wort in the kettle, your wort contains a total of:

40 * 7 = 280

gravity points.

If you boil this down to 5 gallons, those 280 points will be spread out in 5 gallons, so the gravity after the boil will be:

280 / 5 = 56

Leaving you with 1.056 gravity on the 5 gallons.
__________________
Ground Fault Brewing Co.
Walker is offline
 
Reply With Quote Quick reply to this message
Old 11-22-2010, 06:50 PM   #3
devilishprune
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2010
Posts: 1,242
Liked 7 Times on 7 Posts
Likes Given: 12

Default

C1V1=C2V2 is a brewer's best friend.

C1=(gravity)-1 preboil and V1 is preboil volume.

C2=(gravity)-1 postboil and V2 is postboil volume.

__________________
devilishprune 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
Didn't reach my original S Gravity what should i do? JeffBeck All Grain & Partial Mash Brewing 13 10-06-2010 08:52 PM
Original Gravity off CrapulencePants All Grain & Partial Mash Brewing 4 07-24-2010 05:47 PM
Low original gravity...what to do? DFoster All Grain & Partial Mash Brewing 9 02-22-2010 03:42 PM
Help with Original Gravity sircharles4848 All Grain & Partial Mash Brewing 3 06-04-2007 10:08 PM
low original gravity? aweks All Grain & Partial Mash Brewing 11 09-26-2006 02:22 PM