› Forums › Smoking Supplies & Equipment › Smoker Builds › Reverse Flow › control the temperture in reverse flow
New Posts  All Forums:Forum Nav:

control the temperture in reverse flow

post #1 of 5
Thread Starter 

G-day Team

Just looking for some guidance/advice on my smoker. I have tried to build it according to Feldon calculator. Still not sure i nailed it with the CC to FB opening. Anyway I have fired it up 2 x and both times if i leave the stack wide open and the FB vents wide open it reach's 300 degrees, but when I try to start to shut things down (even slightly)it drops to 200 or just below. I have a plate inside to send the heat to the left side of the smoker. Should I have holes drilled in it. Would these few things have bearing on temp control. No fire proof gasket on doors and it is quite a loose fit, my grease trap is not sealed, i find i get quite a bit of ash in the bottom of the fire box and I am sure it reduces air flow. I will attach some photo's. looking forward to reading your thoughts/suggestions.

Thanks in advance





post #2 of 5

Can you post a pic of your baffle plate and firebox vents. The opening between FB and the cook chamber looks a bit restricted, could just be the picture though. 

post #3 of 5
Thread Starter 

Will do, but will be a couple of days as I am away.


here are the numbers

CC 14.5 inches diameter and is 33 inches long

FB 11.75 diameter and 16 inches long

Chimney is 3 inches diameter and 12.5 long (but also has that 5 inch horizontal elbow


I have 4 x 1.125 hole drill in bottom of fire box (i will get some photo's up)


The baffle plate lays just above the chamber opening I haven't welded it completely up the sides, but it is welded all around the round part of the tank and about 4 inches running into the tank


I have attached my template that shows how big the opening is 4 inches high and 8.5 inches across. To be honest, i was very confused as to whether I had done this properly


Looking forward to hearing your thoughts and thanks heaps



post #4 of 5
Thread Starter 





post #5 of 5

Jeff, looking at feldons pit calculator it says you need 5.23 intake holes. So I would either make the four holes you have bigger or add a couple more. Looking at your reverse flow baffle I would make it go as far as your cooking grate and I would also cut out the firebox steel that is going into the main chamber to increase air flow. I definitely think your lack of temperature is from to much restriction of air flow and with a short baffle plate the heat is coming back to the stack to soon. I hope that I have helped. Keep us posted on your progress. 

New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Reverse Flow › Forums › Smoking Supplies & Equipment › Smoker Builds › Reverse Flow › control the temperture in reverse flow