Mounting fire box

tgrimmett

Fire Starter

Original poster

Dec 9, 2013

64

10

West Virginia

• Jun 15, 2014

• #1

I'm building a rf offsett, my fb is 20x24 it calls for a fb to cc opening of 8 inches , I have a piece of 8 inch pipe . If I mounted it cross ways under the bottom were the rf plate starts would it work good if I put the pipe between the fb an cc to connect them that way?

 

tgrimmett

Fire Starter

Original poster

Thread starter

Dec 9, 2013

64

10

West Virginia

• Jun 15, 2014

• #2

Somethin like this

image.jpg

• tgrimmett
• Jun 15, 2014

 

nightrod06

Smoke Blower

Sep 2, 2013

75

12

Indianapolis, IN

• Jun 16, 2014

• #3

What is you cook chamber size? What is the FB to CC opening (square inches) suggested by the pit calculator? Without looking at the exact numbers, an 8" pipe doesnt seem large enough to get the required FB/CC opening size for good airflow.

More details and your calculations would help.

 

tgrimmett

Fire Starter

Original poster

Thread starter

Dec 9, 2013

64

10

West Virginia

• Jun 16, 2014

• #4

Cooking chamber is 20x60,fb is 20x24

 

nightrod06

Smoke Blower

Sep 2, 2013

75

12

Indianapolis, IN

• Jun 16, 2014

• #5

tgrimmett said:

Cooking chamber is 20x60,fb is 20x24

Click to expand...

So you cook chamber is a cylinder 20" diameter by 60" long? Fire box is also a cylinder at 20" diameter by 24" long? Your sketch above suggests a square fire box but you didnt provide a 3rd dimension if that is the case......

Have you done the calculations on the BBQ calculator?

 

daveomak

SMF Hall of Fame Pitmaster

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Nov 12, 2010

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Omak,Washington,U.S.A.

• Jun 16, 2014

• #6

My calculator puts the FB/CC opening about 75 sq. in...... FWIW....

20 x 20 x .7854 x 60 x .004 = 75 ish for a reverse flow

 

Last edited: Jun 16, 2014

tgrimmett

Fire Starter

Original poster

Thread starter

Dec 9, 2013

64

10

West Virginia

• Jun 16, 2014

• #7

Thanks for the advice , the square in the drawing is a round pipe I was Turing crosss ways , but I decided to mount end to end like the picture Dave posted , I got it mounted man it was tought it's 3/8 inch pipe with the end caps being 1/2 in plate that sucker is heavy , I'm hoping to mount it to the trailer tmorrow