The firebox is going to have to big bigger I'm afraid..... Because it's undersized it can't get enough draft and heat producing to flow through correctly through the cook chamber and out the stack… So I think that is going to be your only alternative is to make the firebox bigger… Can you take some pictures of it currently…??
Yes, that FB is way to small for a cooker of that size. You need to cut that one off and attach one the correct size based on the pitcalculator. I'm guessing the guy you bought it from never mentioned he had problems cooking on it.
Thanks, that's what I thought. So now I have a question regarding a new box. Set up like it is does it matter how tall the box is, I was using the calculator and came up with 36wide by 24 high so I wouldn't have clearing issues while pulling it behind my truck.
So while I am tearing stuff up, should I do any thing to the RF plate set up. It is build with a pipe that is about 16" in diameter that goes from inside the firebox to about six inches away from the end of the pit so the heat goes through that instead of under the heat plate.
As long as your measurements come out to the right cubic inches ....doesn't matter the shape of the firebox… Now that pipe thing ...at this point I'm gonna pass on answering that one… That's beyond my knowledge....
Gonna weigh in from the cheap seats. If your heat is traveling through a pipe which is below your actual BP then you have a dead zone (open air between pipe and BP) preventing efficient heat transfer to the BP. Just eyeballing the size of the pipe, that looks to be a choke point as well for the air flow since it doesn't seem to be equal to the throat a cooker that size would have and the 6 inch space at the end of the pipe also sounds like a choke point. Even if you crank up the size of the FB, you are still looking at reduced effciciency in heat transfer because of that pipe IMHO
OK, now I will let the real builders chime in.
If it can't be smoked .... try frying it. It that don't work, it's probably best just left alone
Just a very bad design. I would start over get that pipe out you r getting no radiant heat or very little
Firebox height does not matter so much let the top of your firebox and baffle plate be on the same elevation or very close
I would want my firebox a little over 100% of what the pit. Calculator calls for.
Ok, let's see BP is baffle plate and throat is the opening from firebox to the CC correct? Well then is how big should the throat be and how far down and how long should the bp be...the cc is 75"x36". The tube is representing the bp so I shall remove that, build a properly sized firebox and cut a bigger opening for the throat. Sorry I am trying to learn the lingo.
Thanks for all of the help guys.
If you went with a firebox that was 102% you would need a throat of (209.66) if I were going with a warmer I make my firebox and warmer as one unit so my width would be 36" if you are going with a just a fire box then if you are going with a
half moon opening to cook chamber then it would be 9.5" high by 31.75" wide. You will have to tinker with the numbers on the calculator but if you stay at 102% and use a half moon for you opening then the above numbers will be spot on for you!!!!!
I know it sounds like a lot, and it is, we are just trying to help you get what you want out of this. The BP is one piece all the way from the FB end to the other end except the required opening to match the other opening to FB. This BP also has to have a (approx.) 2 inch lip on the end that is away from the FB, with a drain pipe almost at the end and under the CC is where the valve goes at the end of that pipe. I hope that helps.
Current Smokers: Backyard RF Offset and Hybrid RF Offset trailer rig with Cowboy cooker and fish fryer, always room for more........
Yowza! Everyone else had chimed in with sage advice. I used to have a firebox on my cooker that was about 3x too small but I compensated for it with 200 cfm fans. I would not recommend this however.
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