I have been playing around with various concepts for my build for a while now and have been tossing up between Reverse flow and traditional SFB. I have finally decided to take a different approach and use a down draft style made famous with the Jambo Pits range. I'm not looking to copy or clone a Jambo but to come up with something that will operate along the same principles.
I have a couple of questions I need answered before I start buying steel
1. I'm looking at a CC that's 24" X 48" X 1/4". Can I get by with a single door at 45" or do I need to run with 2 doors at around 21" each?
2. is there any reason for most people putting the door flanges on the door rather than the inside of the CC opening. It would seem like a lot less chance of welding deformation happening
3. I was going to run with Feldons calculations for the size of the FB/CC opening adding a 45o baffle to direct the heat upwards. Should I allow some extra clearance due to the restriction of the baffle eg 125%. I'm going to make the baffle a bolt on extra so I can play with tuning it.
4. I will be making the FB as a single skin (not insulated) and was going to 146% of Feldons calculations. (W24"x H22" X L 20"). Will this be a problem?
5. The chimney will be 5" square welded directly to the end plate with an opening cut out from just below the bottom grill, full pipe width for 6". The chimney will rise 32" from the top of the CC
Am I on the right track with these numbers? Any advice will be greatly appreciated. We don't get to see too many varieties of BBQ pit in Australia and I'm keen to give one of these a go