Exhaust Help on Drum.....

[DDave]

so my guess would be intakes are not big enough does anyone else agree?????

I don't know. There are an awful lot of drums out there running fine with 3 3/4" intakes.

yes all 3 intakes open and i was able to keep almost 300....

And what was the problem again?

i guess that lid didn't have a 2" bung. 2" threaded pipe & a 90 for exhaust & problem solved.

Maybe . . . maybe not.

As long as your exhuast is greater than your intakes, I think you'll be fine. If you add to each, make them adjustable so you still have some range. Mine runs pretty well between 230 and 325. It's damn hard to get it to hold 350 which is where I like to have it for chicken.

I've been thinking about adding another vent to my Weber lid because I think I have plenty of intake but I think more exhaust would help. Maybe I'll get off my butt today and go out and do that.

Dave

[blues_n_cues]

I don't know. There are an awful lot of drums out there running fine with 3 3/4" intakes.



And what was the problem again?



Maybe . . . maybe not.

As long as your exhuast is greater than your intakes, I think you'll be fine. If you add to each, make them adjustable so you still have some range. Mine runs pretty well between 230 and 325. It's damn hard to get it to hold 350 which is where I like to have it for chicken.

I've been thinking about adding another vent to my Weber lid because I think I have plenty of intake but I think more exhaust would help. Maybe I'll get off my butt today and go out and do that.

Dave

that made me think of something...
i've seen guys run Gurus & Pit Vyper fans on drums & i was going to order 1 for my fridge smoker but i already had a fan from the smoker i tossed out when i gutted the machinery.

you could get a small fan like that & bracket it to a 2" piece of pipe for forced air induction...
that should get ya past 325 easy... hehe

[Mikey]

Well, by way of comparison, here is a table for you.

One 2" hole (original drum lid bung) gives you 3.14 square inches of exhaust area

Eight 1/2" holes (somewhat popular pattern) give you 1.57 square inches of exhaust area

Four 7/8" holes (Weber lid) gives you 2.4 square inches of exhaust area

Four 3/4" holes (your lid) gives you 1.77 square inches of exhaust area

So your in the ballpark of exhaust for common configurations.

I am assuming the intakes are 3/4"??



Dave

You might want to make a comparison between the intake & exhaust on a WSM. Since the WSM works so well, that particular ratio (what ever it is) should work fairly well in a drum....................hopefully.

[GOT14U]

the way I have made UD'S and have worked great is 3 - 3/4 inlets and one 1" ball valve. Then 1 - 2" exhaust hole. They perrrrr like a little cat at any temp.

[doctor phreak]

well i redid another lid with a 2-1/4 dia x 8" stack , have not change any intakes...only other difference is i am testing it out with 8lbs of kingsford
its been running about a little over an hour and it has i think settled down and running right now at about 275 with 2 caps on and the ball valve at 50% open...i shot a vid right when i did this so the temp is about 400.....i think the stack made a big difference yesterday with the other lid i could not get it past 300.....no the deal is with the old lid i would probably be ok for 6-7 hr smokes but the long haul ones like butts and briskets i think i would fall in to some trouble.....i am going to let this run today and see what happens got to season the lid any way .....got to put a 12lb turkey on it about 6 am......

[yt]http://www.youtube.com/watch?v=8Z7OJSc06H0[/yt]

[blues_n_cues]

cowgirl did a drum like that w/ the small holes on top w/ nipples & i think she had like 8 of them.

sounds like ya got it going on now.

i didn't want to refer other forums but you can google ugly drum smoker & 1 forum has a thread thats hundreds of pages w/ multiple style builds, all of them awesome.

i'd like to do a drum but after the fridge beast i'd never use it.

[doctor phreak]

cowgirl did a drum like that w/ the small holes on top w/ nipples & i think she had like 8 of them.

sounds like ya got it going on now.

i didn't want to refer other forums but you can google ugly drum smoker & 1 forum has a thread thats hundreds of pages w/ multiple style builds, all of them awesome.

i'd like to do a drum but after the fridge beast i'd never use it.

yea she has a nice drum....hope it going to work now for the long burns ...and i know the website you are talking about there are some nice builds on there....

[blues_n_cues]

i was watching the vid & i know what ya need now(even though i'm a UT guy)

screw in 2 3/4" electrical conduit clamps, 4 feet of 3/4" pvc, & 1 of these
http://www.footballfanatics.com/COLL...ing_Umbrella_1

[doctor phreak]

i was watching the vid & i know what ya need now(even though i'm a UT guy)

screw in 2 3/4" electrical conduit clamps, 4 feet of 3/4" pvc, & 1 of these
http://www.footballfanatics.com/COLL...ing_Umbrella_1

yea i got find a way to do that.....

[DDave]

the deal is with the old lid i would probably be ok for 6-7 hr smokes but the long haul ones like butts and briskets i think i would fall in to some trouble

I think length of burn time is more dependent on charcoal basket size.

Intake and exhaust size will affect your ability to maintain certain temps. Too small and you'll have trouble getting high temps. Too big an exhaust or too many holes and I'd bet you'd have trouble keeping the temp down.

Dave

[doctor phreak]

I think length of burn time is more dependent on charcoal basket size.

Intake and exhaust size will affect your ability to maintain certain temps. Too small and you'll have trouble getting high temps. Too big an exhaust or too many holes and I'd bet you'd have trouble keeping the temp down.
Dave

quite the opposite for me....and i have a standard size basket 18" dia x 8" high

i think the problem was the holes ...i am now running the stack and its been basically at 250 for the last 2 hours.....

[blues_n_cues]

yea i got find a way to do that.....

you could do this too- swivel adjustable fishing rod holder



'll have to find better pix but i put as adjustable fishing rod holder w/ rod screw & added a piece of pvc, then hoseclamped the umbrella to it.

redneck-i-fied rainbreak.

[DDave]

i think the problem was the holes ...i am now running the stack and its been basically at 250 for the last 2 hours.....

Okay . . . now I am really confused.

Your original post said . . .

im in the process of seasoning it and i am having issues getting it past 325 with all 3 intakes fully open

Did you mean 225° originally??

Dave

[doctor phreak]

Okay . . . now I am really confused.

Your original post said . . .



Did you mean 225° originally??

Dave

oh yea sorry ...225 orginally.....thanks

[doctor phreak]

well the drum was rolling the thin blue starting at 12:30pm today and here it is at 10:08 pm almost 10hrs later and it is stil going starting to drop had to open another nipple but all of this on 8lbs of kingsford but nothing cooking well i did do another fattie but nothing more.....so im thinking if put in a 16lb of charcoal that should get me thru the long smokes and probably more......thanks everyone for the help and suggestions...this what makes this place great.....Merry Christmas to everyone.......