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#174571 - 06/15/10 01:45 PM New Mr. Beer Keg ==> Airlock Mod?
BigEaredMonkey Offline
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Registered: 05/22/10
Posts: 772
Loc: Monkey Country, Oregon
I've decided I really don't care for the new Mr. Beer design that has notches for co2 evacuation. I like being able to hop into my fermentation room and see the airlocks bubbling on the older models so I know that something is happening.

I know that some people have had explosions in the new kegs by screwing on the lid too tightly. This tells me that if you tighten the lid all the way down it should be mostly air-tight.

So if I wanted to add an airlock and screw on the lid tight, what size hole should I drill into the top of the lid?

Also any other suggestions or tips that might be necessary to make this mod work well?

Thanks!
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~It's ALWAYS more fun with Monkeys~
Retiring my home brewing to move to Japan...thanks for everything!
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#174574 - 06/15/10 02:27 PM Re: New Mr. Beer Keg ==> Airlock Mod? [Re: BigEaredMonkey]
Stinkfist Offline
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Registered: 01/07/10
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I don't think it will be airtight if you screw it down harder....there are notches in the keg that allow air to escape..Don't think just screwing it down harder will make it airtight...
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Since I am too lazy to update this every brew...I will update with list of awards wink

2013 Upper Mississippi Mashout
Gold medal 10A American Pale Ale
Bronze medal 10B American Amber Ale

2012 Upper Mississippi Mash out
Silver medal 3B European Amber Lager Oktoberfest

2012 National Homebrew Competition First round
Gold Medal 3B European Amber Lager Oktoberfest

2012 Minnesota State Fair Homebrew Competition
Gold Medal 3B European Amber Lager
Gold Medal 10A American Pale Ale
-3rd place Overall!

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#174576 - 06/15/10 02:35 PM Re: New Mr. Beer Keg ==> Airlock Mod? [Re: Stinkfist]
psuchunk03 Global Moderator Offline
That's what she said...
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Registered: 01/01/10
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agree with stinkfist... you would probably need to fill the holes with plastic filler, and put some kind of rubber seal tape, like weather striping or glue a rubber gasket to the fermenter to give the lid something to seat itself against...

a 1" hole saw to cut the hole, and a #5 stopper to put the airlock into would work nicely... that's what i use on my fermenter bucket lids. be as clean/neat as possible when using the hole saw to avoid jagged edges that may affect stopper seal. but, like i said, you would likely need to fill the notches somehow. escaping CO2 will take the path of least resistance to escape, so even with all of that work, the airlock may not bubble if you don't do something about the lid notches.
_________________________
"Only a fool learns from his mistakes; a wise man learns
from the mistakes of others." - Otto von Bismarck


Fermenting:

Carbing / Conditioning:
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#26 Alpha Pale Ale
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KCCO

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#174578 - 06/15/10 03:07 PM Re: New Mr. Beer Keg ==> Airlock Mod? [Re: psuchunk03]
Dane Global Moderator Offline
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Registered: 01/14/09
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Loc: North Carolina
If you really want a traditional style bubbling airlock I would look at using something else for the fermenter like a Better Bottle or glass carboy.

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#174580 - 06/15/10 03:20 PM Re: New Mr. Beer Keg ==> Airlock Mod? [Re: Dane]
Frosty Offline
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I also wish MB had an airlock. I know their reasoning is to make the process as simple as possible, but it would be better for the beer... and how much difficulty for the user does an airlock really add? (zilch, I'd say)

I'd gladly pay extra for a fermenter with an airlock. Ya hear that Eric? smile

Thy must have had a good business reason fore nixing it with the redesigned kegs.
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#39. Bavarian Weissbier: fermenting
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#37. 3rd Cider: RIP
#36. Winter Wünderbier Reboot: fantastic
#35. Spiced Pumpkin Weizenbier: drinking
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On Deck: Coffee Porter, Jalapeño Cerveza v3

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#174584 - 06/15/10 03:28 PM Re: New Mr. Beer Keg ==> Airlock Mod? [Re: Frosty]
The_Professor Administrator Offline
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Registered: 05/19/08
Posts: 6729
Loc: California, USA
If the Mr. Beer kegs had an airlock on the top of the fermenter cap the kegs would not fit into my ice chests (allowing me to close the lid) or the shelf in my fridge where I lager my lagers.
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#174587 - 06/15/10 03:36 PM Re: New Mr. Beer Keg ==> Airlock Mod? [Re: Dane]
BigEaredMonkey Offline
Ultimate Mr. Beer Fan
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Registered: 05/22/10
Posts: 772
Loc: Monkey Country, Oregon
Originally Posted By: Dane
If you really want a traditional style bubbling airlock I would look at using something else for the fermenter like a Better Bottle or glass carboy.


Well, yes a carboy would work better. But the point is to modify existing hardware to make it more functional...not just replace it with a better alternative.


That said...I'm wondering about using silicon to fill the notches and to run a bead around the top of the rim to provide a gasket like surface to complete the seal.

Also thinking of drilling a smaller hole to simply insert the airlock into it like the original setup...
_________________________
~It's ALWAYS more fun with Monkeys~
Retiring my home brewing to move to Japan...thanks for everything!
http://lostinuchiko.wordpress.com/

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#174588 - 06/15/10 03:44 PM Re: New Mr. Beer Keg ==> Airlock Mod? [Re: BigEaredMonkey]
Frosty Offline
The Beer Man
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Registered: 09/24/08
Posts: 4796
Loc: Comfortably distanced
There's something to be said about making what you already have work for you. I'm sure it can be done. I wonder if you'll need an O ring around the inside of the lid.
_________________________
#39. Bavarian Weissbier: fermenting
#38. Brown Ale: 1st AG, undercarbed, but awesome
#37. 3rd Cider: RIP
#36. Winter Wünderbier Reboot: fantastic
#35. Spiced Pumpkin Weizenbier: drinking
#34. Crazy Canuck: DUMPT!
#33. Winter Dark Ale: RIP
#32. Jalapeño Pale Ale v2.0: RIP
#31. Blueberry Wheat: RIP
#30. Frosty's Winter Wunderbier: RIP
#29. Cherry Wheat: RIP
#28. American-ish Wheat: RIP

On Deck: Coffee Porter, Jalapeño Cerveza v3

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#174589 - 06/15/10 03:55 PM Re: New Mr. Beer Keg ==> Airlock Mod? [Re: BigEaredMonkey]
Stinkfist Offline
Ultimate Mr. Beer Fan
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Registered: 01/07/10
Posts: 4660
Loc: Northen Kentucky
Originally Posted By: BigEaredMonkey
Originally Posted By: Dane
If you really want a traditional style bubbling airlock I would look at using something else for the fermenter like a Better Bottle or glass carboy.


Well, yes a carboy would work better. But the point is to modify existing hardware to make it more functional...not just replace it with a better alternative.


That said...I'm wondering about using silicon to fill the notches and to run a bead around the top of the rim to provide a gasket like surface to complete the seal.

Also thinking of drilling a smaller hole to simply insert the airlock into it like the original setup...


just filling it in will be difficult cuz you would most likely screw up the threads..and it would be difficult to screw on...I am sure it can be done...but it won't be easy...an o-ring is probably your best option if you can find the right size
_________________________
Third Eye Brewing

Since I am too lazy to update this every brew...I will update with list of awards wink

2013 Upper Mississippi Mashout
Gold medal 10A American Pale Ale
Bronze medal 10B American Amber Ale

2012 Upper Mississippi Mash out
Silver medal 3B European Amber Lager Oktoberfest

2012 National Homebrew Competition First round
Gold Medal 3B European Amber Lager Oktoberfest

2012 Minnesota State Fair Homebrew Competition
Gold Medal 3B European Amber Lager
Gold Medal 10A American Pale Ale
-3rd place Overall!

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#174592 - 06/15/10 04:12 PM Re: New Mr. Beer Keg ==> Airlock Mod? [Re: BigEaredMonkey]
D Rock Administrator Offline
Overlord Dude
Brewmeister Dubbel
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Registered: 04/07/08
Posts: 11454
Loc: Boulder, Co
Originally Posted By: BigEaredMonkey
But the point is to modify existing hardware to make it more functional...
Not sure that installing an airlock would make it more functional. The question would be what provides more ideal osmotic pressure in the headspace. Not sure what the answer is. Just saying modding might not be an improvement.
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