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R/F Plate specs?
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RigzCNC
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PostPosted: Feb 04 2015    Post subject: R/F Plate specs? Reply with quote

My plans are for a 1/8 thick 24" wide R/F plate. Is this thick enough. I figured that it only provides a hot air path. My lower grate will be about 4" above this is this OK?
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k.a.m.
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PostPosted: Feb 04 2015    Post subject: Reply with quote

Welcome to the ring RigzCNC, looking forward to seeing some pics of your cooks and following your cooker project. Smile
In my opinion the 1/8" plate on a 24" wide chamber is going to probably warp at the firebox end, it will also probably burn out prematurely do to the heat at that area.
The very least I would use would be 3/16"
I hope this helps. Very Happy
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RigzCNC
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PostPosted: Feb 04 2015    Post subject: Reply with quote

I have enough 1/8 to build the R/F plate. I may use 4 feet of 3/16 and finish out with 1/8.

Now a drain question. If I install a drain that stays open will it pull in enough cool air to affect cooking? Does the R/F Plate need a drain?
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k.a.m.
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PostPosted: Feb 04 2015    Post subject: Reply with quote

RigzCNC wrote:
I have enough 1/8 to build the R/F plate. I may use 4 feet of 3/16 and finish out with 1/8.

Now a drain question. If I install a drain that stays open will it pull in enough cool air to affect cooking? Does the R/F Plate need a drain?

I run a 2" drain on the one in my signature, when open it does not effect the way cooker operates.
I prefer a drain for the R/F tunnel as well as the R/F plate, I put them beside each other.
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RigzCNC
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PostPosted: Feb 05 2015    Post subject: Reply with quote

Valves or not? If Valves what kind?
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k.a.m.
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PostPosted: Feb 05 2015    Post subject: Reply with quote

RigzCNC wrote:
Valves or not? If Valves what kind?

I put a 2" ball valve on the R/F plate drain, the secondary drain is just capped. The secondary drain only gets used if for some reason grease spills into the tunnel and needs to be rinsed out.
Do you have a grease bridge between the firebox and cooking chamber to stop accidental grease from entering the firebox?
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RigzCNC
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PostPosted: Feb 05 2015    Post subject: Reply with quote

Not yet. I have the half moon for the chamber cut but when I cut the firebox I will leave a flat at the bottom of the half moon for the grease bridge.
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RigzCNC
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PostPosted: Feb 26 2015    Post subject: Reply with quote

OK. Got the R/F plate cut (3/16). 26.25 on one FB end and 24 on the other end. I got a 2 inch hole and pipe in the non FB end for a drain. I will be about 3.5 to 4 inches above the R/F plate with the bottom cooking surface. I will have about 200 sq in opening opposite of the FB. This should give me 7 inches between the upper and lower grates at the cooking surface. Chimney opening is half way between the upper and lower grates. How does it sound thus far?
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k.a.m.
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PostPosted: Feb 26 2015    Post subject: Reply with quote

RigzCNC wrote:
OK. Got the R/F plate cut (3/16). 26.25 on one FB end and 24 on the other end. I got a 2 inch hole and pipe in the non FB end for a drain. I will be about 3.5 to 4 inches above the R/F plate with the bottom cooking surface. I will have about 200 sq in opening opposite of the FB. This should give me 7 inches between the upper and lower grates at the cooking surface. Chimney opening is half way between the upper and lower grates. How does it sound thus far?

Sounds like you did your homework. Very Happy The only thing missing is pics. Wink
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RigzCNC
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PostPosted: Feb 26 2015    Post subject: Reply with quote

Will try to get some pics this weekend. I need to cook 2 butts this weekend so I may give her a try. I may give the family lock jaw but at least they will have meat. The only part that I am dreading is welding my shiny stack to the chamber.
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k.a.m.
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PostPosted: Feb 26 2015    Post subject: Reply with quote

RigzCNC wrote:
Will try to get some pics this weekend. I need to cook 2 butts this weekend so I may give her a try. I may give the family lock jaw but at least they will have meat. The only part that I am dreading is welding my shiny stack to the chamber.

You could always do like jambo and others do.
Weld a flange to the end with bolt holes in it then have it chromed.
Have a mating flange on the cooker to bolt to.
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RigzCNC
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PostPosted: Feb 27 2015    Post subject: Reply with quote

Thats a good idea. I dont know who does chroming around here. But I like the flange idea and I could paint it and bolt it to the stack with tapped holes. Back to the CNC machine!
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k.a.m.
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PostPosted: Feb 27 2015    Post subject: Reply with quote

I look forward to seeing what you come up with. Very Happy
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RigzCNC
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PostPosted: Mar 02 2015    Post subject: Test Run! Reply with quote

Well...I got the box welded on Friday afternoon and fired her off. i put the temp probe at the lower right grate (next to the firebox) toward the center of the CC. It took about 20 minutes to come to 225 degrees. I have not sealed the doors yet but I needed 2 butts cooked for a church function (a Bluegrass Pickin' Jam...man we had fun and...) ok back on subject. I started the cooking about 5pm. Outside temp was about 47 and a little wind. I don't have the fans yet for auto stoke so I was doing all adjustments manually to keep 225. A little warpage in the firebox door allowed for some air but nothing that could not be controlled. After night fall the outside temp dropped to 33 degrees but up until 2am I kept the temp between 210 and 230. At 2 am internal meat temp finally reached 164. About 5 am internal temp got to 175 and that was as high as it got ( I went to sleep about 2:30). I cut into the butts at 11 am and they were not done. I committed the unpardonable sin and finished them in the oven. Lessons learned:
Use thicker tank next time.
Seal Doors.
Finish Auto Draft Control.
Was gonna send pic but could not see how.
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RigzCNC
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PostPosted: May 05 2015    Post subject: Reply with quote



Rollin"


Last edited by RigzCNC on May 05 2015; edited 1 time in total
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RigzCNC
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PostPosted: May 05 2015    Post subject: Reply with quote



Condiment Shelf


Last edited by RigzCNC on May 05 2015; edited 1 time in total
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RigzCNC
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PostPosted: May 05 2015    Post subject: Reply with quote



Dry wood storage


Last edited by RigzCNC on May 05 2015; edited 1 time in total
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RigzCNC
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PostPosted: May 05 2015    Post subject: Reply with quote



6 inch Chrome stack. Drafts beautifully.


Last edited by RigzCNC on May 05 2015; edited 1 time in total
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Maniac
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PostPosted: May 05 2015    Post subject: Reply with quote

RigzCNC Glad you had a good time....but still can't see your pics Embarassed
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RigzCNC
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PostPosted: May 05 2015    Post subject: Reply with quote

That kinda happens when you rearrange your photobucket files. Sometimes organization sucks!
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