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General Category => Equipment and Software => Topic started by: richardt on February 21, 2011, 08:06:44 pm

Title: DIY Randalls?
Post by: richardt on February 21, 2011, 08:06:44 pm
http://www.dogfish.com/randall/randall-30.htm-0 (http://www.dogfish.com/randall/randall-30.htm-0)

This looks sweet, but at $375... it seems a bit steep.  It looks easy enought to build, but what do I know? 

I'm still deciding whether or not to build an older version of the Randall with a whole house water filter (cost around $30), but it just isn't as sexy and is prone to excessive foaming with the versions I've seen in use. 
I even went to a brewpub that had a Randall in use and the bartender was using a spoon to remove the excessive foam from the pint glass!  Why use a Randall if you're going to remove the foam?!  Figure out how to reduce the foaming (chill the lines, for example).
Regardless, It'd be nice to build a Randall that remains chilled until service so the beer is less foamy.

Anybody recognize the components well enough to help me figure out where to get the parts/price them out.

Anybody have a great version of a Randall they'd like to share?  Post pics please!
Title: Re: DIY Randalls?
Post by: beerocracy on February 22, 2011, 09:05:40 am
Maltose Falcons have instructions to build one with using a water filter housing:

http://www.maltosefalcons.com/clubgear/hash-back-aka-moormanator
Title: Re: DIY Randalls?
Post by: dbeechum on February 22, 2011, 11:27:39 am
And seeing these new fangled ones.. I think we'll be deconstructing the new one too! :)
Title: Re: DIY Randalls?
Post by: gimmeales on February 24, 2011, 03:49:14 pm
...that is just freaking awesome.  Never occurred to me you could DIY one so easily (and cheaply!).

How was the effect, Drew?  As good as you can imagine? :)

I had ApriHop at a summer beerfest and the Randall was packed with hops and halved apricots - one of the freshest-tasting, more delicious beers I've had.
Title: Re: DIY Randalls?
Post by: dbeechum on February 24, 2011, 05:07:01 pm
It's pretty awesome, except the foam.

Of course, that's the point of the new gizmo. One pressurized chamber to infuse, a second to settle down the foam and then a variable resistance faucet to balance.
Title: Re: DIY Randalls?
Post by: tschmidlin on February 24, 2011, 05:51:59 pm
I built one similar to the Falcons one, it definitely foams a lot but it's still really cool :)
Title: Re: DIY Randalls?
Post by: bluesman on February 24, 2011, 06:28:38 pm
Here's a simple water filter canister design like that from the maltose falcon website.

I understand chilling the canister is key to reducing foam although I have never tried it so I can't say for sure.

http://www.homebrewtalk.com/f13/wet-hop-randalling-2924/index2.html#post116939

Here's another one that can be purchased already assembled.

(http://www.homebrewstuff.com/media/1/a20792b12851ab6e291d22_m.jpg)
Title: Re: DIY Randalls?
Post by: brontotex on February 24, 2011, 06:44:35 pm
Maybe 2 of the filter housings in series.
Title: Re: DIY Randalls?
Post by: dbeechum on February 24, 2011, 07:18:25 pm
That's part of what I'm thinking, but the question is the linkage to reduce even more foaming as you expand into the second chamber.
Title: Re: DIY Randalls?
Post by: tschmidlin on February 24, 2011, 11:22:04 pm
I would think you'd want to push the beer in line all of the way to the bottom and draw off of the bottom too, the foam will rise to the top that way.  Then maybe a very long line after that so that you need a lot of pressure to push the beer to the faucet - the more pressure the more it should reduce the foaming in the second vessel.  That's how it works in my head anyway, maybe not in reality ;)
Title: Re: DIY Randalls?
Post by: dbeechum on February 25, 2011, 12:29:13 am
Yeah a lot of upside work I think.

The only problem with the fixed long line (which I agree with) is that you'll never be able to dynamically adjust. Hmm, wonder what it would take to make a dynamic faucet.. :)
Title: Re: DIY Randalls?
Post by: bonjour on February 25, 2011, 07:21:46 am
Hmm, wonder what it would take to make a dynamic faucet.. :)
Someone had one at the NHC last year,  I think Jeff, no Ant I believe.
Title: Re: DIY Randalls?
Post by: richardt on February 25, 2011, 07:22:47 am
What are the black devices on top of each chamber?  Quick Disconnects?  Vent Valves?
Title: Re: DIY Randalls?
Post by: mabrungard on February 25, 2011, 07:25:32 am
Could the foaming also be a function of the filter canister being at room temp and the beer is just warming and releasing the gas due to contact with the warmer hop mass and the head loss through the hop bed?

Has anyone tried placing one of these units in an ice bath to see if it helps?
Title: Re: DIY Randalls?
Post by: Steve on February 25, 2011, 08:09:59 am
Here's a simple water filter canister design like that from the maltose falcon website.

Serves double duty! use it as a filter into the bright tank. After carbonation, add a porous tube and insert hops and/or fresh fruit and away you go. 

When using it as a filter, you could also add any flavor extract to the center "output" of the cartridge.  The extract flavors would get blended into the beer immediately after the filtering.
Title: Re: DIY Randalls?
Post by: richardt on February 25, 2011, 11:35:39 am
Spin Down and Sediment-Trapper filters
http://watersolutions.net/products/SedimentTrapper/ST.php (http://watersolutions.net/products/SedimentTrapper/ST.php)
Inline Sand Separators

http://www.amazon.com/dp/B004C3VUCS/ref=asc_df_B004C3VUCS1442520?smid=AXIP0A1I8BZRS&tag=shopzilla_mp_1104-20&linkCode=asn&creative=395105&creativeASIN=B004C3VUCS (http://www.amazon.com/dp/B004C3VUCS/ref=asc_df_B004C3VUCS1442520?smid=AXIP0A1I8BZRS&tag=shopzilla_mp_1104-20&linkCode=asn&creative=395105&creativeASIN=B004C3VUCS)

Potential components