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Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > BIAB Brewing > BIAB Brewing (with pics)
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Old 10-23-2012, 03:39 PM   #1021
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Originally Posted by wormraper View Post
ok guys, I'm thinking of going BIAB from all extract for my next brew (queue drums and fanfare)... was going to try the all grain Chinook IPA kit from Northern brewer pre-crushed grains etc... now I only have a 7.5 gallon pot that came with my Bayou burner... do I have enough volume in that pot do do BIAB or should I hold off till I have a bigger pot??? (volume is 10 lbs of 2-row and one pound of carapills)
You are close to your kettles limit! Use the rackers calc to determine mash volume.

http://www.rackers.org/calcs.shtml

The way around a small kettle is to mash w/ less watter in the kettle, then dunk sparge the bag in another pot bucket whatever, then combine runnings. Even a cold sparge will work if that is the best you can do.
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Old 10-23-2012, 04:14 PM   #1022
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Originally Posted by wilserbrewer View Post
You are close to your kettles limit! Use the rackers calc to determine mash volume.

http://www.rackers.org/calcs.shtml

The way around a small kettle is to mash w/ less watter in the kettle, then dunk sparge the bag in another pot bucket whatever, then combine runnings. Even a cold sparge will work if that is the best you can do.
ahhh, that should work then. I have a 5 gallon kettle that I use as well so sparging in a 5 gallon kettle after mashing in the 7.5 should work it seems.
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Old 10-23-2012, 08:38 PM   #1023
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ahhh, that should work then. I have a 5 gallon kettle that I use as well so sparging in a 5 gallon kettle after mashing in the 7.5 should work it seems.
I tried this for the first time last week and it seemed to work well for me. I mashed for 60 in about 6 gallons of water and then transferred my bag of grains to about 2.5 gallons of pre-heated water in my 5 gallon kettle and sparged for 10 minutes at 170. I then combined the two into my 7.5 gallon kettle to give me enough pre-boil volume for a 5 gallon batch. I hit 80% efficiency doing this and I was using about 13 lbs of finely crushed grain.

Beer has been in the fermenter for about a week so I will update on how it turns out...
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Old 10-24-2012, 06:18 AM   #1024
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Originally Posted by Mikko
1.st post from Finnish lurker , my 2 cents:

If you squeeze grain bag you waste less wort in grains.
That means that you can use less water overall and still get amount of pre boil wort you want.

Because you can use less water, wort is less diluted and SG is higher, and that means you can use little bit less grains to get same SG than without squeezing, and you get efficieny gain !

Squeezing works same way than batch sparging. When you do batch sparge you dilute wort that is remaining in grains, so you waste less of it. When you squeeze, the wort remaining in grains is still stronger stuff, but you waste much less of it.

EDIT: I noticed that by squeezing I actually do not mean really "squeezing" , but letting wort drip out of bag somehow. I have not actually measured how much more wort is removed from grains if I really squeeze bag vs I just let it hang and drip slowly on top of kettle.

Here Iam mashing 5gal's of 1.100 Barley Wine, total efficiency according to Beersmith2 was 70%, it is enough for me, did not do batch sparge :

Brew kettle (50l) has 3000w custom made immersion element and it is controlled with arduino based control box. Software is home made (Iam SW engineer), DS18S20 digital temperature sensor monitoring wort temperature and cheap chinese pump doing wort circulation. Out of picture is winch which Iam using to lift grain bag out of kettle. Iam very happy with this setup, works excellently.
Instructions link for setup please? Very interested in learning about this.
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Old 10-24-2012, 02:17 PM   #1025
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Instructions link for setup please? Very interested in learning about this.
I don't have instructions at the moment for my system.

I actually use arduino programmed to work like simple PID controller now, you just set temperature and it keeps it, then you must manually dial next temperature etc..

I have "auto mode" which has about 90% done. It would enable you to program automatic mashing programs, however I noticed that it is more cumbersome to use and I do not like it, dialing next temperature manually is not that big deal.

There is this BrewTroller project which is more complex system for automating brewing.
https://www.oscsys.com/projects/brewtroller

Iam however programming v3.0 of this system (very very beginning) and Iam planning to make it available to others also if there is interest.

This time Arduino works only as simple input and output board, switching relays , reading temperature sensors etc.. and you just connect it with USB to Android tablet/phone or on linux/win/mac based computer and it works as user interface. Planning to do support for all those platforms.

aand if somebody sends me free iPad I can check if it is possible to support it also

This way it is much more simpler system for anybody to do. You do not have to deal about lcd screens, rotary controllers, buttons, leds, soldering many components etcetcetc...
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Old 10-24-2012, 07:27 PM   #1026
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Originally Posted by Mikko

I don't have instructions at the moment for my system.

I actually use arduino programmed to work like simple PID controller now, you just set temperature and it keeps it, then you must manually dial next temperature etc..

I have "auto mode" which has about 90% done. It would enable you to program automatic mashing programs, however I noticed that it is more cumbersome to use and I do not like it, dialing next temperature manually is not that big deal.

There is this BrewTroller project which is more complex system for automating brewing.
https://www.oscsys.com/projects/brewtroller

Iam however programming v3.0 of this system (very very beginning) and Iam planning to make it available to others also if there is interest.

This time Arduino works only as simple input and output board, switching relays , reading temperature sensors etc.. and you just connect it with USB to Android tablet/phone or on linux/win/mac based computer and it works as user interface. Planning to do support for all those platforms.

aand if somebody sends me free iPad I can check if it is possible to support it also

This way it is much more simpler system for anybody to do. You do not have to deal about lcd screens, rotary controllers, buttons, leds, soldering many components etcetcetc...
Have you considered using a raspberry pi?
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Old 10-26-2012, 06:14 PM   #1027
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Did a 1.5 gal version of NB Jake's CDA. I really got to get a mill, had my LHBS mill for me and the last few times have been getting ~78% eff. This time I decided to sparge for the first time and ended up with 72%. I noticed when I looked at the grains they were not crushed as much as they had been before, I saw her run them through the mill twice so maybe they changed the settings, or because it was a bigger beer I lost some eff. Oh well got my fermentation chamber working for the first batch also. In a few weeks I will give my opinion on the beer.

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Old 10-29-2012, 01:43 PM   #1028
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Have you considered using a raspberry pi?
Yes I have considered, system should also contain Raspberry support. As you can use GPIO you can get rid of arduino altogether.

Although as you can buy those "android on stick" thingies very cheaply from china and also arduino clones cost almost nothing there, cost wise it is quite same to use raspberry or android.
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Old 11-08-2012, 01:11 PM   #1029
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Hi, question here. I've taken an interest in this BIAB technique (albeit a much less technical approach than the one pictured here!) as I'd quite like to give all-grain a go without the equipment investment (for the mean time, at least).
I was wondering: Is it plausible to line a regular cooler with a bag and sort of do a 'mash in a bag' before transferring to my brew pot? My pot is just about 5 gallons, which is too small to do proper BIAB but just big enough to boil a decent batch.
I understand this would decrease efficiency vs using a properly converted mash tun, but is there anything strikingly horrible about this idea?

I know I sound cheap, but I've spent a fair bit on HB recently and would like to actually get some batches in before spending any more!

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Old 11-08-2012, 01:34 PM   #1030
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Hi, question here. I've taken an interest in this BIAB technique (albeit a much less technical approach than the one pictured here!) as I'd quite like to give all-grain a go without the equipment investment (for the mean time, at least).
I was wondering: Is it plausible to line a regular cooler with a bag and sort of do a 'mash in a bag' before transferring to my brew pot? My pot is just about 5 gallons, which is too small to do proper BIAB but just big enough to boil a decent batch.
I understand this would decrease efficiency vs using a properly converted mash tun, but is there anything strikingly horrible about this idea?

I know I sound cheap, but I've spent a fair bit on HB recently and would like to actually get some batches in before spending any more!
That should work just fine - the only issue is you wouldn't be able to add heat during the mash if your mash temperature dropped, but a cooler should hold temps pretty well anyway so that might not be an issue.
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