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Old 02-14-2014, 09:51 PM   #11
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I have not had success with this method/process.

You have to have a very coarse bag and a very coarse "false bottom" to get the grain and bag to drain fast enough. Also, only grinding one time is a must.
Otherwise you have to stop the pump every 5-10 minutes and stir and let the bag drain or you will have burned wort and that is with the pump running at trickle.

Ask me how I know this

See my other posts and my post about using a stir motor.

Or ... as other suggested... dont complicate it

thanks Kevin

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Old 02-14-2014, 09:58 PM   #12
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I thought about that, but thought I was just taking away from BIAB's biggest advantage....it's simplicity. The last batch I did, I didn't even do a mashout. I still do drain and squeeze the bag though.



PS: Go Preds!

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Old 02-14-2014, 11:45 PM   #13
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Haeffnkr, how do you know this?

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Old 02-15-2014, 02:01 AM   #14
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Quote:
Im just more or less hoping the vorlauf gives clearer beer and the sparge better efficiency.
My feedback would be that you can probably skip the vorlauf step. I recirculate through the mash as you described and get 85% efficiency; the crush will make the difference.

To be clear (no pun intended) the vorlauf won't make your beer any clearer; it will make your wort clearer, but all the extra grain dust will fall out during fermentation so your beer will be fine.

I you like clear beer check out using Irish Moss/Whirlfloc during the boil or gelatin at the end of fermentation.

Cheers
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Old 02-15-2014, 03:25 AM   #15
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Quote:
Originally Posted by newnick View Post
Haeffnkr, how do you know this?

I meant dont ask me how I know...oops.

Been there ... done that
http://www.homebrewtalk.com/f244/ebiab-pump-bag-material-418053/


thanks Kevin
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Old 02-15-2014, 11:40 AM   #16
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Ok you guys convinced me... keep it traditional and simple . Im still finishing my hoist rig but a simple drain and squeeze will be all. Thanks guys.

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Old 02-15-2014, 01:06 PM   #17
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Quote:
Originally Posted by haeffnkr View Post

I meant dont ask me how I know...oops.

Been there ... done that
http://www.homebrewtalk.com/f244/ebiab-pump-bag-material-418053/


thanks Kevin
Thanks for the link. I read a post recently about a traditional AG setup where the brewer collapsed his false bottom recirculating. To date I haven't had a problem recirculating, not that I won't, but if I did I would certainly reconsider doing it because it is more work and I have had good luck when I don't recirculate. I have a spray head mounted inside the lid that acts like a valve downstream of the pump restricting the flow along with the basket which sits off the bottom a couple of inches. I don't think I would have a problem loosing suction or cavitating the pump. I also use a small 12 volt pump rather than a large pump. I also get the grains double crushed to help with effiecency. I plan on trying it out with just a regular crush sometime to see how it works hopefully reducing the dust that ends up in the fermentor.
My goal is to get more consistant, but it's not really working to well. Some batches the gravity is lower than expected some are higher, not that it's a big deal or anything but it's how everyone measures effectiveness, I guess.
Someday I will need a hoist as well cause the bag and the basket are pretty heavy. Wouldn't recirculating be considered a constant vorlouf?
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Old 02-15-2014, 02:11 PM   #18
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Quote:
Originally Posted by newnick View Post
Thanks for the link. I read a post recently about a traditional AG setup where the brewer collapsed his false bottom recirculating. To date I haven't had a problem recirculating, not that I won't, but if I did I would certainly reconsider doing it because it is more work and I have had good luck when I don't recirculate. I have a spray head mounted inside the lid that acts like a valve downstream of the pump restricting the flow along with the basket which sits off the bottom a couple of inches. I don't think I would have a problem loosing suction or cavitating the pump. I also use a small 12 volt pump rather than a large pump. I also get the grains double crushed to help with effiecency. I plan on trying it out with just a regular crush sometime to see how it works hopefully reducing the dust that ends up in the fermentor.
My goal is to get more consistant, but it's not really working to well. Some batches the gravity is lower than expected some are higher, not that it's a big deal or anything but it's how everyone measures effectiveness, I guess.
Someday I will need a hoist as well cause the bag and the basket are pretty heavy. Wouldn't recirculating be considered a constant vorlouf?
If you aren't milling your own grains, blame the one who does. My efficiency is pretty consistent with the exception of wheat or rye where my efficiency goes down, as documented by other brewers as well.
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Old 02-16-2014, 09:11 PM   #19
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Last couple of batches have been 20 points high, if this keeps up I might just go back to a single crush.

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Old 02-16-2014, 10:45 PM   #20
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Quote:
Originally Posted by newnick View Post
Last couple of batches have been 20 points high, if this keeps up I might just go back to a single crush.
Either that or reduce the amount of grain to account for the extra efficiency....or you could just learn to like beers with higher ABV.
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