OK thanks. The problem I have is I cut my door further back so I can't just go straight out the top. I was thinking about doing the pipe with a 90° angle out the back but that is going to set it close to the top of the cooking grate. I'm now thinking I could put the pipe higher up and cut at a different angle. Just having a hard time figuring that angle out. I'm going to try and cut some 2x4 to get he angle and use as my template.
I wouldn't worry about the opening being at the grate level. It will be the bottom of the 90 and the top of that opening will still be at the top of the CC. and when you get it back far enough the length of the stack is only what is going straight up.
Current Smokers: Backyard RF Offset and Hybrid RF Offset trailer rig with Cowboy cooker and fish fryer, always room for more........
Thanks for the input. It's Been a big help so far. I finished the stack and The air intake today. Both were a challenge. I ended up cutting my hole for the stack bigger so I could stick it straight in higher up in the cc and make a 90 degree angle. Then I cut the inside to match the angle of the cc. I made my air intake out of 2" square, cut a 1" channel in the front and opened up the back and welded into the side of my fb. The only bad part is my cc door warped a little. I have to figure out how to fix it.
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They can be tough to fix when you have them off and darn near impossible when they're on. I would open the door and put a small piece of pipe near the top left corner and close the door over the pipe. Be sure to go easy at first until you see if it's working or you might make it worse. You can use small stitch welds to strap the door and it shouldn't warp too bad. It looks real good so far!
I used to make them out of 3/16" x 1-1/2" flat bar. But I now use 1/8" it is much easier to bend. I topically bend the flat bar around a piece of pipe to make the shape then move it over to the door and tack in place
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Current Smokers: Backyard RF Offset and Hybrid RF Offset trailer rig with Cowboy cooker and fish fryer, always room for more........