Happy HolidaySs Giveaway - Winners Re-Re-Re-Re-Re-Drawn - 24 hours to Claim!

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


Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Specific Gravity Newbs
Reply
 
LinkBack Thread Tools
Old 08-01-2005, 03:52 PM   #1
ian
Feedback Score: 0 reviews
 
ian's Avatar
Recipes 
 
Join Date: Jul 2005
Location: Pendleton, SC USA
Posts: 476
Liked 5 Times on 5 Posts

Default Specific Gravity Newbs

Hey Guys,

My buddy just thought of something. When we brewed the other day we checked the O.G. on only 2 gallons of wort. We measured it at 1.068 which seemed kind of high for the Dry Irish Stout that we were brewing. We then added 3 gallons of water to the wort.

Now we're thinking that the O.G. is inaccurate because we immediately dilluted the hell out of it with water. So following this logic, (O.G. * 2) / 5 we get an actual O.G. of 1.027.

Does this sound correct? If so, this is looks like its gonna be some weak beer.

__________________
ian is offline
 
Reply With Quote Quick reply to this message
Old 08-01-2005, 04:56 PM   #2
Sasquatch
Feedback Score: 0 reviews
 
Sasquatch's Avatar
Recipes 
 
Join Date: Jun 2005
Posts: 540
Default

Your initial OG doesn't sound ridiculous to me - 50+ is not unheard of. I think your final on a stout is gonna be 15-25. You did dilute the hell out of it, if you had 2 gallons of wort and added 3 gallons of water. If I read this right, then yes, you have more than halved your OG, and the beer will be very weak indeed.

__________________

Primary: Lager

Secondary: Sangiovese, Honey Nut Brown, some Pilsner/ale kinda thing that just won't quit...

Bottled:
Tar Sands Porter, Special Dark Bitter,Oaky Red ale, Hammer & Tongs Black Ale, Black Draught, Cooper's Bitter, Baron's Pilsner
Super Saazy Saaz Pilsner Saaz (It's a little green, yet)

Sasquatch is offline
 
Reply With Quote Quick reply to this message
Old 08-01-2005, 05:04 PM   #3
DesertBrew
You're not my type
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
DesertBrew's Avatar
Recipes 
 
Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 5,526
Liked 82 Times on 77 Posts
Likes Given: 173

Default

You are correct that you should test it after adding the water just prior to pitching your yeast. Should be well mixed. Your math could be basically accurate however what was the temp (if known, then rough guess) of the wort you tested? If it was really hot, then your OG would be much higher yet.

Was this an extract recipe? Did it have a Mfg OG rating? If it did, I'd suspect you'd be relatively close to what the recipe states. I wouldn't worry about it. Live and learn...

__________________
DesertBrew is offline
 
Reply With Quote Quick reply to this message
Old 08-01-2005, 05:09 PM   #4
homebrewer_99
Feedback Score: 0 reviews
 
homebrewer_99's Avatar
Recipes 
 
Join Date: Feb 2005
Location: Atkinson (near the Quad Cities), IL
Posts: 17,951
Liked 89 Times on 77 Posts
Likes Given: 1

Default

How much malt did you use? Did you use enough to make a five gal batch? Those are the important questions.

You are just playing a nonsensical numbers game at this point. Any wort of two gals is going to be high because the brew is concentrated.

If your OG is 1027 at five gals then you are brewing a dessert. All is not lost though. My best recommendation would be to pour it over ice cream on a hot sunny day and enjoy!

__________________
HB Bill
homebrewer_99 is offline
 
Reply With Quote Quick reply to this message
Old 08-01-2005, 06:29 PM   #5
ian
Feedback Score: 0 reviews
 
ian's Avatar
Recipes 
 
Join Date: Jul 2005
Location: Pendleton, SC USA
Posts: 476
Liked 5 Times on 5 Posts

Default

It was Extract Kit from Northern Brewer, Dry Irish Stout.

6 lbs of LME
1 lb Roasted Malt Barley
1 oz Kent Goldings (bittering)
1 oz Kent Goldings (flavor)

target OG of 1.042

The 2 gallons of wort were about 80 degrees when we measured.

The kit was for 5 gallons. I didn't get an actual reading of the wort at the full 5 gallons. We (incorrectly) measured SG on the concentrated 2 gallons of wort and I was trying to extrapolate out what it would have been at 5 gallons from the 2 gallon reading. I hope this isn't getting confusing.

__________________
ian is offline
 
Reply With Quote Quick reply to this message
Old 08-01-2005, 07:13 PM   #6
Toilet Rocker
Feedback Score: 0 reviews
 
Toilet Rocker's Avatar
Recipes 
 
Join Date: Jul 2005
Location: Asbury Park, NJ
Posts: 830
Liked 11 Times on 11 Posts
Likes Given: 3

Default

I'm surprised not to see any black patent or chocolate in here. But I guess the 1# of barley is doing the trick.

OK, I got nothing.

I wouldn't be overly concerned with whether the OG is right. See where it finishes and how it tastes. It's that last bit that matters.

__________________

When people ask what I do for a living, I say I brew beer. No, not as a profession, but to live.

Toilet Rocker is offline
 
Reply With Quote Quick reply to this message
Old 08-01-2005, 07:15 PM   #7
DesertBrew
You're not my type
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
DesertBrew's Avatar
Recipes 
 
Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 5,526
Liked 82 Times on 77 Posts
Likes Given: 173

Default

Nope, not confused.

I'm going to bet that your OG was not in the 1.027 range and is more towards the recipe OG. Since you're not doing an all-grain batch where mash efficiency is in play, your ability to control the original gravity isn't as much within your control.

Your beer will be fine and will provide ample buzz factor I'm sure.

__________________
DesertBrew is offline
 
Reply With Quote Quick reply to this message
Old 08-01-2005, 07:36 PM   #8
ian
Feedback Score: 0 reviews
 
ian's Avatar
Recipes 
 
Join Date: Jul 2005
Location: Pendleton, SC USA
Posts: 476
Liked 5 Times on 5 Posts

Default

Yesh Yesh, I have a Dutch Accshent. Isn't dat Vierd?
Velly toit, like de toiger.

Ok Cool, thanks. I'm not very concerned about it. We just forgot to do the OG on the first batch and then read the wrong thing on the second. Third times a charm!!!

__________________
ian is offline
 
Reply With Quote Quick reply to this message
Old 08-01-2005, 08:22 PM   #9
cowain
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2005
Location: Little Rock, AR
Posts: 338
Liked 2 Times on 2 Posts

Default

Yes, your OG is actually 1.0272. However, your hygrometer is probably set to measure correctly at something like 59 degrees Farenheit, so there is a correction to be done in order to correct the measurement you read at approximately 80 degrees.
Your actual gravity was 1.071, so your gravity would really be 1.028. Oh well, still not very high. Although, I kind of agree with desertBrew because I don't know how your gravity could have gotten so low while doing an extract recipe.


See here for the temp conversion stuff.

http://www.howtobrew.com/appendices/appendixA.html

__________________
cowain 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
Specific Gravity? Target Gravity? HalloweenGod General Techniques 6 01-03-2009 07:30 PM
specific gravity beerme70 All Grain & Partial Mash Brewing 3 05-12-2008 05:05 AM
Specific Gravity Unruly Beginners Beer Brewing Forum 16 03-21-2008 11:31 AM
Specific gravity Turkey Man Beginners Beer Brewing Forum 11 06-13-2007 05:25 AM
Specific Gravity dougb Beginners Beer Brewing Forum 5 03-16-2006 02:53 PM



Newest Threads

LATEST SPONSOR DEALS