Author Topic: Getting OG with predetermines Preboil gravity  (Read 2782 times)

Offline Homercidal

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Getting OG with predetermines Preboil gravity
« on: September 07, 2011, 04:17:24 PM »
Ok, I'm going to be getting some WORT from someone with a predetermined gravity.  I have been trying to get BS2 to come up with the final volume and OG but the OG doesn't change.  What to do?

I enter an extract recipe with enough extract to set the preboil gravity, then adjust the boil length in an attempt to get OG, but nothing changes.  I can use the boil-off tool, but that doesn't help me on the main page with showing the information on the bath, like estimated volume etc.  Should it do that?  I can fudge the brewday just fine, just expected BS2 to be able to come up with the numbers automatically.

-Jim

Offline merfizle

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Re: Getting OG with predetermines Preboil gravity
« Reply #1 on: September 07, 2011, 04:39:22 PM »
IBU's should change, total water, est pre boil gravity, etc.  OG will not however.

Mark
Primary: Lambic base for solera barrel
Kegged: Bavarian Weissbier, N. English brown, Roggenbier

Offline Homercidal

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Re: Getting OG with predetermines Preboil gravity
« Reply #2 on: September 09, 2011, 08:18:25 AM »
Why not?  Isn't this the kind of stuff I bought BS to do for me?  If it knows the pre-boil gravity and volume, and I enter a boil length, it seems like it should easily be able to deduce the OG and other information from that.  How does it determine OG from pre-boil gravity if it doesn't take the boil length into account?

Offline Homercidal

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Re: Getting OG with predetermines Preboil gravity
« Reply #3 on: September 09, 2011, 08:55:43 AM »
I think I see what's going on.  BS is set to provide you with the starting volumes based on your recipe and desired OG.  Apparenlty it's not designed to change the OG with changes to boil length.  It instead changes the starting volume to reach that desired OG.

Normally, this is what I would want.  However, this time I have no control over pre-boil volume or gravity.  I guess I'll have to use the boil-off tool to fudge the OG this time.

 

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