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Old 12-28-2012, 04:11 PM   #171
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nice thread

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Old 01-15-2013, 07:21 PM   #172
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Quote:
Originally Posted by Bobby_M View Post
There seems to be a huge uprising in the number of new all grain brewers and the persistent question is "how big of a tun do I need?" It depends on what your batch size, efficiency, and desired OG is. Here's the easy way for you to decide based on your needs.




Keep in mind that even if you think you might want to do both 5 and 10 gallon batches, odds are your really high gravity beers will be 5 gallon batches. Who needs 10 gallons of barleywine?

Just for example, a 10 gallon mash tun can do 5 gallons of 1.118 barleywine (~11% ABV) and 10 gallon batches of 1.060 IPA (~6% ABV). I personally think something in the 50-60qt range is most flexible in that regard if you don't mind a square/rectangular cooler.

If you want to figure for larger or smaller batch sizes, take the number in the "Max Gravity Units" column and divide that by your desired batch size.
That's cool. Thanks for the chart. All good to know.
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Old 01-30-2013, 04:44 AM   #173
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Excellent thread here! If I didnt see this, I would have been screwed on my next brew!

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Old 01-30-2013, 07:15 PM   #174
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Can somebody tell me how much volume loss would occur if you cut the top of a 15.5 gallon keg off where the skirt meets. In other words there would be no curve, only straight sides. I'm guessing less than a gallon but wanted to be sure. I'm wanting to make a straight sided Mash Tun for a "tippy dump" and am trying to figure how much volume it would be.

Thanks

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Old 01-31-2013, 01:20 AM   #175
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Well, I just eyeballed a 1/2 keg in my garage and I would estimate that cutting as you would describe would reduce the capacity comapared to a full uncut keg by approx 3 quarts, even less compared to a keggle cut at a 12" top hole as typically cut. To get a better number would take filling it and measuring the water level to the skirt weld, then using a measured pitcher fill the remaining volume.

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Old 01-31-2013, 01:36 AM   #176
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Just figure your strike water based on your ratio. Take your grain weight and multiply by 0.1 to get your "gallons" equivalent from the grain....add the two together and that's how big your MLT needs to be.

15 pounds at 1.5 qts per pound = 5.6 gallons strike plus 1.5 "gallons" of grain = 7.1 gallon MLT requirement.

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Old 01-31-2013, 01:39 PM   #177
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Quote:
Originally Posted by helibrewer View Post
Just figure your strike water based on your ratio. Take your grain weight and multiply by 0.1 to get your "gallons" equivalent from the grain....add the two together and that's how big your MLT needs to be.

15 pounds at 1.5 qts per pound = 5.6 gallons strike plus 1.5 "gallons" of grain = 7.1 gallon MLT requirement.
Couldn't have said it any better!
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Old 03-11-2013, 09:38 PM   #178
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Quote:
Originally Posted by GrogNerd View Post
looking at the 36qt Coleman Extreme 5 and it lists interior dimensions at 19.75 in. x 7.75 in. x 10 in.

= 1,530.625 cubic inches
/231 ≈ 6.6 gallons ≈ 26.5 quarts

I majored in math, so arithmetic is not my strong suit, and anyone correct me if I'm wrong, but 26.5 quarts ≠ 36 quarts

where did the other 2½ gallons go?

which makes striking a perfectly reasonable 6.75 gallons in what SHOULD BE a 36 quart system a little difficult
FWIW, their measurements are off. I measured my 36-qt Coleman Extreme and it's about 8.0-8.2 gal (32-33 qt).

Quote:
Originally Posted by helibrewer View Post
Just figure your strike water based on your ratio. Take your grain weight and multiply by 0.1 to get your "gallons" equivalent from the grain....add the two together and that's how big your MLT needs to be.

15 pounds at 1.5 qts per pound = 5.6 gallons strike plus 1.5 "gallons" of grain = 7.1 gallon MLT requirement.
Awesome way to boil this down!! Seems to be a smidgen optimistic but perhaps that's just my measurements.
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Old 03-12-2013, 03:22 AM   #179
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Cooler manufacturers usually include the volume of the concave space under the lid as part of the total volume. Obviously we can't use that for mashing.

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Old 03-14-2013, 09:12 AM   #180
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Ok trying to understand, I'm new so if I'm only doing 5 gal batches no bigger than 1.090 I would need a 36 qt cooler

(90x5)/17=26.5 qt minimum tun

Is this correct? I want to have the option of both batch and fly sparging, does this play into it?

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