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Old 02-23-2010, 02:54 PM   #11
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Was it a 5 gallon batch? I assume you used 2 bags for easier management.....did you sparge/squeeze?




yes, it was a 10 gallon batch. I've done this several times now. I use two bags, no need to clamp them, there is enough extra bag left that you can just ball up the top and leave it on top of the mash without having to clamp it or worry about it falling into the mash. I do "sparge." I put the bags in a 6.5 gallon bottling bucket, and steep them at 168 with however much water I need to reach 10 gallons in the brew kettle.
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Old 02-23-2010, 03:18 PM   #12
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yes, it was a 10 gallon batch. I've done this several times now. I use two bags, no need to clamp them, there is enough extra bag left that you can just ball up the top and leave it on top of the mash without having to clamp it or worry about it falling into the mash. I do "sparge." I put the bags in a 6.5 gallon bottling bucket, and steep them at 168 with however much water I need to reach 10 gallons in the brew kettle.
Nice. Sounds like you're doing the "dunk sparge". I plan on doing the "lift and rinse" . I guess most of the volume/displacement problems come from those who are using the true full volume, no-sparge method. Hmmmmmmm......Hmmmmmm.....the wheels are turning....
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Old 02-23-2010, 10:51 PM   #13
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Would a 20 or 25 gallon pot be too big due to dead space below the element?
I recirculate and use one vessel, so there is effectively no dead space.
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Old 02-24-2010, 04:23 AM   #14
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Nice. Sounds like you're doing the "dunk sparge". I plan on doing the "lift and rinse" . I guess most of the volume/displacement problems come from those who are using the true full volume, no-sparge method. Hmmmmmmm......Hmmmmmm.....the wheels are turning....
ive done the lift and rinse with really good results too, it just gets tiring on the arms. BIAB is the way to go btw, i regularly get in the low to mid 80s in efficiency.
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Old 02-24-2010, 06:04 AM   #15
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I recirculate and use one vessel, so there is effectively no dead space.
I see it the same way The only thing I'm worrying about is having the basket too high, and not having the grains be completely immersed because the pot is too large.
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Old 02-24-2010, 10:42 AM   #16
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I see it the same way The only thing I'm worrying about is having the basket too high, and not having the grains be completely immersed because the pot is too large.
ScubaSteve,

With the rims system your going to be using, wouldn't you just have to account for the dead space under the basket?

I would try that and then sparge with your lift method. Ading until you reach your preboil volume.

The only problem I'm thinking of would be the small particals left behind that may not get picked up and recirculated during your rims operation.

Bull
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Old 02-24-2010, 12:24 PM   #17
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I see it the same way The only thing I'm worrying about is having the basket too high, and not having the grains be completely immersed because the pot is too large.
just make sure it clears the element (you're electric,right?) and you'll be fine. I do 5 gallon batches in my 15 gallon pot and the grains are nicely submerged. My basket is about 2.5" off the bottom. For a 5 gallon batch I start with over 8 gallons of water (plus volume of grains) at start of mash, so the pot is just over half full.
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Old 02-24-2010, 12:31 PM   #18
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just make sure it clears the element (you're electric,right?) and you'll be fine. I do 5 gallon batches in my 15 gallon pot and the grains are nicely submerged. My basket is about 2.5" off the bottom. For a 5 gallon batch I start with over 8 gallons of water (plus volume of grains) at start of mash, so the pot is just over half full.
Okay, that makes sense. I plan on using a 20 gallon pot, so it couldn't have THAT much more volume below the element.
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Old 02-24-2010, 12:36 PM   #19
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ScubaSteve,

With the rims system your going to be using, wouldn't you just have to account for the dead space under the basket?

I would try that and then sparge with your lift method. Ading until you reach your preboil volume.

The only problem I'm thinking of would be the small particals left behind that may not get picked up and recirculated during your rims operation.

Bull
Your post reminded me that the RIMS system can make up for any unsubmerged grain, i.e. by recirculating I will constantly "bathe" the grain and conversion will still occur. This is good to know for those smaller batches.
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Old 02-24-2010, 12:54 PM   #20
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Anyone with significant area under a false bottom should at least "vorlauf" a few quarts after a few minutes of mashing just to get that water mixed in well. Stirring above the FB doesn't really do it.

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