reverse flow question

[speed70]

after installing the firebox do i put the rf plate above the firebox or do i connect to the firebox my last smoker rf i had the rf plate welded to the firebox and it had a bad hotspot on that side and what should be my spacing to the bottom of the tank im using a 250 propane tank 24x24x24 firebox 6"chimmley 24.5 tall and how big should the opening to the tank from firewood

[garyeng]

speed70 - I am not sure how you could have a bad hotspot by the firebox on a RF unless the firebox was way undersized and you had to keep a roaring fire to keep the temps up. Attaching int RF plate is a very common practice as should not be the cause of having a hot spot in you cooker. Also, looking at what you have as the main chamber of the cooker, the firebox you have comes in at 71% of the size it needs to be. It is better to be a little large on the firebox than be undersized. For the opening to the firebox to the cooker, you should have about 110 sq inches.

Take a look at the calculators under the cookers sticky and you will see where I get the information above that I mentioned above. http://www.thesmokering.com/forum/viewtopic.php?t=20871

Hope this helps.

Gary
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3rd Coast Smoke

[k.a.m.]

speed70, I make the R/F plate a continuation of the top of the firebox. The distance between the R/F plate and the lowest grate can be between 1" and 5" in my opinion.
Given your cooker and firebox size a half moon opening of 17" wide x 8.5" tall will give you an area of 113.49 Sq.in. this is slightly larger than you need but when you add a 1.5" grease bridge you will be back in the numbers.
I hope this helps.
_________________
Always remember slow and steady wins the race.

Reverse Flow
Hybrid Cooker

[speed70]

ok thanks for the info that will help me alot my next question is well actaully what is a good way to mount the racks on the bottom im wanting to be level with the door opening like the langs im using 1 inch sq. tubing for the racks and second what is the best way to do the air intake vents on side of the firebox

[k.a.m.]

speed70, so you do not want your grates to slide out is what your saying because Langs are drop ins on the lower section. Just place your rails to what ever depth you need. If your using 1" tubing for grate material and #9 flat expanded metal for the surface then the rails would need to be set about an 1" 1/8" lower than the opening.
I like either horizontal slides or vertical slides I do not care for spinners.
I hope this helps.
_________________
Always remember slow and steady wins the race.

Reverse Flow
Hybrid Cooker

[speed70]

yes i just want drop in racks on the bottom do i put angle or little tabs to hold them in place or does the natural shape of the tank hold them up my firebox is in place i cut it out the 17x8.5 inches now on the other end of the tank i put a 4" flat standing up to attache my angle drip rail to which is 2"x2" angle 1/4" thick which that leaves a half moon shape of 7"x25" at that end is that a big enough opening me and that calculater dont get along to good sorry i keep asking questions but i want to be sure im right thanks again for the help im wanting to upload pics but cant seem to figure out how

[k.a.m.]

speed70, I would place angle iron supports for the grates.
Your 7" x 25" opening will be plenty big.
Ask all the questions you need.
_________________
Always remember slow and steady wins the race.

Reverse Flow
Hybrid Cooker

[speed70]

thank you im working on getting pics posted

[speed70]

well im about finished with smoker i like the fenders on the trailer and cooking racks im hoping to finish tommorrow