Need help calculating flow and fire box size for BBQ Bomb

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Re: Need help calculating flow and fire box size.

Post by Frank_Cox » November 6th, 2011, 6:08 pm

well, that sounds like a GREAT! weekend to me!
EDITED: Sorry Kam, I just relized what you were saying! hope you get better soon!


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Re: Need help calculating flow and fire box size.

Post by pitbull8151 » November 6th, 2011, 6:46 pm

Another thought on the pipe into cooker. With the flow coming up the outside wall of the ball, if I dont drop it down some I feel it will not perform as a reverse flow and just draw the heat/smoke right out the top.

Thoughts?



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Re: Need help calculating flow and fire box size.

Post by Gizmo » November 6th, 2011, 6:48 pm

Ouch! hope you get on the mend soon k.a.m. :(


And on the eighth day God created barbecue …. because he DOES love us and he wants us to be happy. :D
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k.a.m.

Re: Need help calculating flow and fire box size.

Post by k.a.m. » November 6th, 2011, 8:28 pm

pitbull8151 wrote:Another thought on the pipe into cooker. With the flow coming up the outside wall of the ball, if I dont drop it down some I feel it will not perform as a reverse flow and just draw the heat/smoke right out the top.

Thoughts?
pitbull8151, if the connector pipes enter the cooker and travel to the top and exhaust there then having the exhaust stack exit at the bottom makes sense for a reverse effect.
If your connector pipes enter the cook chamber and terminate there and your exhaust is also low that does not make a reverse flow. On a pitmaker cooker the exhaust travels up a chute between the back walls the exhaust is placed between the side walls down low so the heat/smoke travels up and then forced back down to the exhaust. I hope this makes sense. :)



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Re: Need help calculating flow and fire box size.

Post by Tom_Heath » November 6th, 2011, 9:40 pm

I gotta roll a little off here.

I would let the stack hang inside the ball about 6 inchs. I don't care for the stack all the way to the grate but thats just me.

In my opinion, you are gonna have plenty of air turbulence when the smoke comes around the baffle plate.

One last thought is that in many ways its gonna cook somewhat like a drum.


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Re: Need help calculating flow and fire box size.

Post by Gizmo » November 6th, 2011, 9:43 pm

What Smoker Tom said twice over ... :)


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Re: Need help calculating flow and fire box size.

Post by pitbull8151 » November 8th, 2011, 3:11 pm

Making some progress...
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Re: Need help calculating flow and fire box size.

Post by pitbull8151 » November 8th, 2011, 3:15 pm

The boss man..
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k.a.m.

Re: Need help calculating flow and fire box size.

Post by k.a.m. » November 8th, 2011, 7:38 pm

pitbull8151, your making some nice progress. :mrgreen: Maybe we need to get the Boss Man some gloves those wheels aren't very forgiving when they make contact to skin.



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Re: Need help calculating flow and fire box size.

Post by Blazer » November 9th, 2011, 11:29 am

And a handle.



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Re: Need help calculating flow and fire box size.

Post by Tom_Heath » November 9th, 2011, 8:39 pm

I see that you have very good taste in grinders!!!!!!!

To bad you didn't have a stack that had a gently bend in it and it would look like a fuse. That would be awesome. If thats rigid pipe, I have a hyd bender. We could fix ya right up.


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Re: Need help calculating flow and fire box size.

Post by pitbull8151 » November 9th, 2011, 10:04 pm

Its 4 in pipe. An "S" bend would look awesome! You guys are full of tricks...ha



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Re: Need help calculating flow and fire box size.

Post by pitbull8151 » November 9th, 2011, 10:07 pm

The hot box.
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Re: Need help calculating flow and fire box size.

Post by pitbull8151 » November 14th, 2011, 1:10 pm

I am making some slow progress. Got the welds ground so far.
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Re: Need help calculating flow and fire box size.

Post by Tom_Heath » November 15th, 2011, 8:18 pm

Looking good!!!If the smoker doesn't work out you can always use it as a safe. LOL!!!!


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Re: Need help calculating flow and fire box size.

Post by pitbull8151 » November 17th, 2011, 3:54 pm

I got some help from one of my buddies today and got a few things done.
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Re: Need help calculating flow and fire box size.

Post by pitbull8151 » November 17th, 2011, 3:57 pm

Not a bad 2 hrs. of killing time and BS!
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Re: Need help calculating flow and fire box size.

Post by pitbull8151 » November 17th, 2011, 3:59 pm

This is my buddies wagon. Its has done its fair share of cooking.
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Re: Need help calculating flow and fire box size for BBQ Bom

Post by Tom_Heath » November 19th, 2011, 5:15 pm

I like the stack stopping where you did. Like Frank said, you can always make it adjustable if you want.

And thats a nice looking trailer your buddy has.


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Re: Need help calculating flow and fire box size for BBQ Bom

Post by Welding Machine » November 24th, 2011, 7:45 am

Wow, that unit is awesome! :beer:


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Re: Need help calculating flow and fire box size for BBQ Bom

Post by pitbull8151 » December 14th, 2011, 8:47 pm

Hey guys, I talked to Frank the other day and got a lot of great info. Just wondering how will rig operate if fire box is undersized according to calculator. Does it make it harder control or maintain temps. Just curious.....
I will be mounting it up on trailer pretty soon and will have some pics.



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Re: Need help calculating flow and fire box size for BBQ Bom

Post by Frank_Cox » December 14th, 2011, 9:08 pm

if your FB is too small you will not have enough air mass in the firebox to be heated and it will have a hard time building up to temp. the air mass in the firebox is what we are moving thru the smoker to transport the heat from the fire to the cook chamber.


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Re: Need help calculating flow and fire box size for BBQ Bom

Post by pitbull8151 » December 15th, 2011, 7:17 pm

Got it... I went and got a trailer to modify for the rig....Hopefully will be rolling smoke soon!!! :grillin:



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Re: Need help calculating flow and fire box size for BBQ Bom

Post by HARRY BARKER » January 12th, 2012, 8:40 pm

wow!!!! i aint never seen nuthin like that!!!! it a propane tank?? what the?


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