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Unread 10-27-2009, 07:45 AM   #1
countyliner
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Default Air Intake Question

My original post is getting pretty long and I'm sure its a PITA sifting through it all, but I need some advice on how much air intake I need to allow for on this please.


firebox7.jpg

firebox8.jpg

The fire box is 22" x 23". The tank is 41".

Would two 2 1/2" holes allow enough air for this size box? I'd hate to wrap up this part of the build and end up with a fire that is starving for air.
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Unread 10-27-2009, 09:20 AM   #2
Skidder
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It's easier to add intake than take away. That there is one interesting build ya got going on.
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Unread 10-27-2009, 09:29 AM   #3
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I would have an adjustable damper/s for the intake. That way you could control a wider heat range.
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Unread 10-27-2009, 09:37 AM   #4
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Sliding intake door (BGE type) or a daisy wheel (weber kettle).
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Unread 10-27-2009, 09:39 AM   #5
countyliner
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Quote:
Originally Posted by Skidder View Post
It's easier to add intake than take away. That there is one interesting build ya got going on.
Thanks for the reply, Skidder.

Needing to add more air vents down the line is what I'm trying to avoid.

All vents on this thing will be fully adjustable with a simple sliding damper.

I'm looking for advice on how much is needed. I don't want to go overboard and put in 6 vents when 2 or 3 would be adequate.
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Unread 10-27-2009, 09:40 AM   #6
countyliner
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Smoker and Bandit,

Thanks. But how much would you think would be enough?
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Unread 10-27-2009, 10:08 AM   #7
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Quote:
Originally Posted by countyliner View Post
Smoker and Bandit,

Thanks. But how much would you think would be enough?

No hard science... amount of maximum intake = maximum possible temp. In other words... how hot/hi temp do you want to go?

Guess a tral burn (with wired thermos on the grate)... start with a small intake wide open. The trial will guide your direction.

Please watch your air leaks/gaps... how well will the vents seal? Might be a little tricky if you do wish to dial down the temps on a smoke session.
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Unread 10-27-2009, 12:08 PM   #8
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I think everyone here knows exactly what I am thinking.

P.S. - LOVE the design. I am jealous.
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Unread 10-27-2009, 01:01 PM   #9
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It can't be to hard. Sorry I answered it wrong but even if you have a six inch hole as long as it is adjustable you shouldn't have a problem. See what I mean?
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Unread 10-27-2009, 01:04 PM   #10
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Question considered a forced air system

given the size of your cooker, have you considered a forced air with a controllable speed (think of a motor from an old vacuum cleaner forcing air through a piece of exhaust pipe, with a damper system to regulate how much flow goes into the cooker). If the air flow is directly onto the coals, you can go from very low heat to blacksmith capabilities!
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Unread 10-27-2009, 01:11 PM   #11
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Maybe look around at other cookers and you can judge from that. To me you can't go to big cause if it's adjustable you can crank it down till you reach the temp your looking for.
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Unread 10-27-2009, 03:00 PM   #12
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Quote:
Originally Posted by barbefunkoramaque View Post
I think everyone here knows exactly what I am thinking.

P.S. - LOVE the design. I am jealous.
Thanks, and,,,what are you thinking? lol


Thanks all. I guess there isnt a hard and fast answer to my question. This is my first project like this and I have no idea what I'm doing, kinda just designing as I go and trying to keep the grind-off and re-do to a minimum.

Skidder, you didnt answer wrong. Sorry if my reply gave you that idea.

I have thought about the forced air thing but hope to stay away from that.

I want this to mainly be a smoker. I'd like to get it working like an uds or a kettle, get everything adjusted just right so that it will cook for several hours without constant tending.

Thanks again.
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Unread 10-27-2009, 03:19 PM   #13
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I'm thinking you have enough. I can't tell how the intake you have works though. Does it slide upward or to the left(I'm looking at the last pic) It looks like the vent is well under the coal grate so it draws air upward, and it looks to be high enough from the bottom so that ash doesn't clog it up. Can you get a another pic of the vent holes and how it works so we can get a clearer idea of it? Is there any way you can factor in space for an extra hole to drill out if you see you need it?
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Unread 11-10-2010, 07:13 PM   #14
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Quote:
Originally Posted by countyliner View Post
My original post is getting pretty long and I'm sure its a PITA sifting through it all, but I need some advice on how much air intake I need to allow for on this please.


Attachment 33081

Attachment 33082

The fire box is 22" x 23". The tank is 41".

Would two 2 1/2" holes allow enough air for this size box? I'd hate to wrap up this part of the build and end up with a fire that is starving for air.
I used to have a bookmark to Countyliners bloody brilliant buoy/tank, but since a hd went aovert I lost it, and the search function is essentially retarded, I can no longer find the right link. So if anyone has a link to his original thread, and any pertinent subsequent threads, I'd appreciate them. Cheers.
Edit: well finally search coughed up something I could use. Still hands down THE BEST bit of kit I've seen knocked up, anywhere, anytime, in regards to outdoor cooking.

Last edited by justjack; 11-10-2010 at 07:37 PM.. Reason: it's a miracle
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