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Old 01-25-2012, 03:36 AM   #1
chriscraig
 
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I spent hours reading about formulas to calculate appropriate beer line length before I bought my draft system so that I wouldn't have to deal with the hassle of troubleshooting issues with my pour. Over and over again, I read advice here to use 10' lines, and of course I ignored it.

Well, I used the 5' lines that came with my kit, and of course, I had foamy pours! I swapped out the 5' lines with 10' lines, and wouldn't you know it? A perfect pint in about 9 seconds.

Can somebody explain to me why these formulas just don't work for most people? I have a typical keezer setup with the shanks going through a 2x10 insulated collar.

 
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Old 01-25-2012, 05:19 AM   #2
johnsma22
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I have a 10' line for most ales. A 15' line for lagers and higher carbonated ales like hefe's and a 35' line for my dedicated root beer tap. Too short is a problem, as you found out. Too long will only result in a slower pour.
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Old 01-25-2012, 12:16 PM   #3
chriscraig
 
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Yeah, but what I'd like to understand is why the formulas break down when applied to short-draw home brew systems like mine.
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Old 01-25-2012, 02:27 PM   #4
badbrew
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Quote:
Originally Posted by chriscraig View Post
Yeah, but what I'd like to understand is why the formulas break down when applied to short-draw home brew systems like mine.
What formula are you using?

 
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Old 01-25-2012, 02:52 PM   #5
chriscraig
 
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Quote:
Originally Posted by badbrew View Post
What formula are you using?
http://www.brewersfriend.com/2009/07...-and-pressure/
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Old 01-25-2012, 03:36 PM   #6
Brewnoob1
 
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Using that formula, it says I would need under 4' of line for a proper pour. That didn't work for me even when I had 5'. I switched to 10' following advice on this forum and I have slower but perfect pours each and every time. Why doesn't the formula work? Who knows...but who cares if you have perfect pours now?
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Old 01-25-2012, 03:45 PM   #7
chriscraig
 
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Quote:
Originally Posted by Brewnoob1 View Post
Using that formula, it says I would need under 4' of line for a proper pour. That didn't work for me even when I had 5'. I switched to 10' following advice on this forum and I have slower but perfect pours each and every time. Why doesn't the formula work? Who knows...but who cares if you have perfect pours now?
Just curious.
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Old 01-25-2012, 03:52 PM   #8
Brewnoob1
 
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In theory, it should work. With the proper resistance, 5' of line should be about plenty for anyone. That doesn't seem to work for most people I've noticed. Not sure what is magical about 10', but if it aint broke, don't fix it. That's my philosophy anyways....
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Old 01-26-2012, 03:12 AM   #9
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Becuase, I believe the manufacturer's stated resistance for 2.2 to 3 .lbs for 3/16th vinyl is inaccurate. All the other numbers involved: elevation, temperature are based on scientific fact, but with the hose resistance, we are relying on what the manufactuer is saying it is. I find that most 3/16th vinyl is more like 1 to 1.5.lbs/foot of resistance in my experience's. Hope that help's some. Cheers!!!

 
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Old 01-26-2012, 03:19 AM   #10
sudsmcgee
 
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I ended up settling on 8' lines for my system. 5' wasn't enough for me either.

 
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