FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
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Contents:
Call For Judges - Walk The Line and AHA-CoC-Strong Belgians (HamFon\)" <nelson@buildabeer.org>
Re: false bottom specs (Fred L Johnson)
false bottom in mash-tun (Fred Scheer)
False Bottom Specs ("John W. Zeller")
Re: false bottom specs (Jeff Renner)
5th Annual Great Lakes International Cider and Perry ("Jeff Carlson")
Work From Your House And Earn 10% ("SRC CONSTRUCTION COMPANY LTD")
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Date: Mon, 9 Nov 2009 07:57:42 -0500
From: "Nelson \(HamFon\)" <nelson at buildabeer.org>
Subject: Call For Judges - Walk The Line and AHA-CoC-Strong Belgians
We need judges!
Judging date: December 5, 2009 starting at 9AM
Judging location: Oldsmar Taphouse, 300 State Street East #107, Oldsmar, FL
34677
Staying overnight? You ARE judging strong Belgians and other Imperial beer!
Try Holiday Inn Express, 3990 Tampa Road, Olsdmar, FL 34677, online rate
currently about $64.
Dunedin Brewers Guild is very happy to announce that Oldsmar Taphouse will
be hosting Walk The Line On Barleywine again this year. In addition, OTH
will be hosting the American Homebrewers Association Club-only-Competition
for Strong Belgian Ales (BJCP style 18). These are both competitions with
big beers in them - and I'll need some help to judge them all! We will be
judging all day, starting at 9AM, and judging for both competitions. Both
competitions are AHA sanctioned for BJCP judging points, and the BJCP 2008
judging guidelines will be followed.
For more information, or if you have not yet entered your beers, check out
the Dunedin Brewers Guild website at www.DunedinBrewersGuild.com.
IMPORTANT - please email me back if you plan to come, so that I can schedule
flights. Judges who RSVP will receive priority.
Nelson Crowle
Competition Coordinator
Nelson at BuildABeer.org
------------------------------
Date: Mon, 9 Nov 2009 08:10:41 -0500
From: Fred L Johnson <FLJohnson52 at nc.rr.com>
Subject: Re: false bottom specs
Ralph asks how high off of the bottom a false bottom should sit.
I believe one should make that height as small as possible. The space
under the false bottom is essentially a mixing compartment which
reduces the effectiveness of the fly sparge. Ideally, one would want
the concentrated wort dripping out of the grain to directly the outlet
with a tiny tube at each hole in the false bottom. By have a space
(compartment) below the false bottom, the concentrated wort enters
this pool and is gradually, continually diluted with less concentrated
wort entering it. This mixture is what leaves the the outlet, not the
concentrated wort. The larger the volume of this compartment, the
more dilution that will be required to get the wort out.
For the sake of illustrating this, imagine how inefficient lautering
would be if one had half of the total mash liquor volume below the
false bottom. Although the sugar may have been very effectively
leached out from the grain bed above the false bottom, the leached
sugar will remain within the compartment below the false bottom for
much longer time because it doesn't immediately leave the lauter tun.
This is why false bottom designs are not necessarily more efficient
than the Bazooka screen type of design.
My old perforated bucket in a bucket lauter tun design got about 70%
efficiency by fly sparging with 2.6 quarts per pound of grain with
beers using 10-12 pounds of grain. That lauter tun had about a 0.6
gallons of wort below the false bottom. When I switched to a single,
one inch Bazooka screen, my efficiency immediately went up to about
83% using the same ratio of sparge water volume to grist weight and
every thing else being the same. I contend that the difference in
efficiency was NOT in how efficiently I was leaching sugars from the
grains. In fact, according to Palmer, I may have been under leaching
sugars from parts of the bed lateral to the Bazooka screen. The
efficiency difference was in how much wort enters the Bazooka tube
compartment (about 3.4 oz in an 8" screen/spigot length), i.e.,
compared to the 0.6 gallons that was below my false bottom.
Fred L Johnson
Apex, North Carolina, USA
------------------------------
Date: Mon, 9 Nov 2009 13:27:59 +0000 (UTC)
From: Fred Scheer <fredscheer07 at comcast.net>
Subject: false bottom in mash-tun
Hi Ralph
First let's calculate the volume of your mashtun
=3.14*r2*h
=51 gallon volume
I would recommend 2 gallon volume for the false bottom,
which iis about ~1 inch from the bottom.
Cheers
Fred
------------------------------
Date: Mon, 09 Nov 2009 10:58:13 -0500
From: "John W. Zeller" <jwzell at current.net>
Subject: False Bottom Specs
Ralph Link requested specifications for a false bottom he is building.
Specifically, how much clearance should there be below the FB. IMO, the
dead space isn't critical at all. The best answer would be to position
it as close to the bottom as possible. Obviously, it should be higher
than the outlet port, but it's also good to have it above a sight glass
port if one is used. This keeps grain and particulates from entering
the sight glass and positioned this way the sight glass can be used as
to eyeball the suction if you are pumping directly out of the MT. The
sight glass would also be a vent to the atmosphere which can help avoid
excessive pump suction that can lead to a stuck sparge. The reason I
say the dead space is not critical is that any wort remaining there at
the end of the sparge will typically be of very low gravity and not
worth recovering. I guess the exception might be when batch sparging
where the runnings may have a higher sugar content. In that case I
suppose you could tilt the kettle to drain the dead space if need be. I
don't batch sparge, so YMMV on that. The 24" diameter is a pretty big
span, so it might be a good idea to provide some supports in the center
area to keep it from collapsing. Even low levels of suction applied can
put a big load on the FB.
-john z
cincinnati
------------------------------
Date: Mon, 9 Nov 2009 14:32:47 -0500
From: Jeff Renner <jsrenner at umich.edu>
Subject: Re: false bottom specs
Ralph Link <ralphl at shaw.ca> wrote:
> Does anyone know if
> there is a formula or recommendation for how high off the bottom the
> false bottom should sit for our pot size?
In general, I'd say the closer the better, as long as it clears the
drainage valve. The liquid under the false bottom is not
participating in the starch conversion and only serves to dilute the
enzymes. I brew with a 15.5 gallon system and there is 2.5 gallons
under the fb in order to clear the valve. This has never caused any
trouble, but I can't help but think that less would be better.
Jeff
- ---
Jeff Renner in Ann Arbor, Michigan USA, jsrenner at umich.edu
"One never knows, do one?" Fats Waller, American Musician, 1904-1943
------------------------------
Date: Mon, 09 Nov 2009 14:55:54 -0500
From: "Jeff Carlson" <carlsonj at gvsu.edu>
Subject: 5th Annual Great Lakes International Cider and Perry
The PrimeTime Brewers and The Great Lakes Cider & Perry Association,
a not for profit organization formed to showcase, educate, and promote
the art of apple and pear fermentation beverages is pleased to announce
their 5th annual Great Lakes International Cider & Perry Competition
This unique competition includes categories for both commercial producers
(holding liquor licenses) and non-commercial producers (home hobbyists
and non-liquor licensed commercial establishments like cider mills).
Fermented products of all kinds are welcome; ciders, perrys, meads,
beers, and commercial distillates, provided that they are made with
apples and/or pears. Information and a registration packet are available at
http://www.primetimebrewers.com/ or
http://www.michiganbeerguide.com/beerguide.asp
Entry window is Nov 23 - Dec 8th 2009 Judging is Dec 12th,
with a judging seminar and tasting the night before Dec 11th.
The competition takes place in Grand Rapids MI at the
Amway Grand Plaza Hotel.
This is an AHA and BJCP santioned event.
------------------------------
Date: Tue, 10 Nov 2009 08:00:52 +0800 (PHT)
From: "SRC CONSTRUCTION COMPANY LTD" <info at noreply.com>
Subject: Work From Your House And Earn 10%
Dear Friend,
Work From Your House And Earn 10%
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Please fill out this form below: SRC CONSTRUCTION COMPANY LTD.
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RESPECTFULLY SUBMITTED,
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PRESIDENT-SRC CONSTRUCTION COMPANY LTD.
Hong Kong.
------------------------------
End of HOMEBREW Digest #5627, 11/09/09
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