I believe 1" is correct. If you're using a step bit you can always drill it to a size that's close than try a nipple to see if it fits, then go from there if you need to make it a little bigger.

Drill to 7/8th first. But Kenny is probably right. Step bit is the only way to go.
 
It's just for show.lol


The rain & winds over here are very strong at the moment and i'm having a bit of trouble keeping the temps up. I'll try ramping them up with opening the valve all the way. Ant other suggestions?
 
OK, I'm trying my second trial run on my UDS to see if I got all the bugs worked out. It appears that the culprit causing my temps to drop and not go back up was the charcoal basket sitting directly on the terra cotta ashpan. Air was not able to get to the charcoal from below at all, so when the stuff on top burned and started to form a little ash the stuff on the bottom was unable to ignite. There were probably 18 - 20 unburned briquettes underneath the burned.

Got rid of the ashpan all together and raised the charcoal basket about 3/4" to make sure I'm getting good airflow. Now I only have 23-3/4" clearance between the charcoal grate & bottom cooking grate, which should be fine.

Anyway, I put another 9# bag of briquettes in the basket and poured 1/2 chimney of lit coals into the cavity in the middle. Took 3 minutes to get up to 225* and it's now coasting at 229* for about 15 minutes with one 1/2" inlet completely open and the 1/2" ball valve cracked open about 1/3 of the way.
 
It's just for show.lol


The rain & winds over here are very strong at the moment and i'm having a bit of trouble keeping the temps up. I'll try ramping them up with opening the valve all the way. Ant other suggestions?


Just put a piece of cardboard over the lid and watch the temp climb.
 
This ashpan may help. My UDS is now upside down, I cut the bottom out so that I could get to the ashes for easy cleanup. I used the lid from a donor and made a ashpan. I cut is about 1.5" smaller then the drum so the drum would be easy to lift over the charcoal basket and ashpan and set on the stand. After several cooks I think I am having a little trouble controlling the temps due I think to some air intake where the drum meets the stand. Nothing major, but I am going to weld two rings to the stand for the drum to fit into. I will put stove gasket between the rings so that it should be pretty airtight around the bottom of the drum allowing me more control with the intakes.

Just a curious question for Carrsvillesmoker, why 5" nipples?

And step bits are the way to go. They are so much better then reguluar bits I cannot describe the difference. After being in on 6 builds I would never go back to regular drill bits on a UDS or UDG.
 
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I ended up going with 4 inch long nipples. The instructions I had originally received called for 6 inch ones. I am still trying to decide on a charcoal basket. I have an old 18 inch weber that I picked up on Freecycle that I might try to turn into a charcoal basket. I remember seeing something similar on here with an 18 inch weber.
 
OK, I'm trying my second trial run on my UDS to see if I got all the bugs worked out. It appears that the culprit causing my temps to drop and not go back up was the charcoal basket sitting directly on the terra cotta ashpan. Air was not able to get to the charcoal from below at all, so when the stuff on top burned and started to form a little ash the stuff on the bottom was unable to ignite. There were probably 18 - 20 unburned briquettes underneath the burned.

Got rid of the ashpan all together and raised the charcoal basket about 3/4" to make sure I'm getting good airflow. Now I only have 23-3/4" clearance between the charcoal grate & bottom cooking grate, which should be fine.

Anyway, I put another 9# bag of briquettes in the basket and poured 1/2 chimney of lit coals into the cavity in the middle. Took 3 minutes to get up to 225* and it's now coasting at 229* for about 15 minutes with one 1/2" inlet completely open and the 1/2" ball valve cracked open about 1/3 of the way.



You got it bro, just kick it once an hour to drop the ashes and she'll run there all day long!!! :biggrin:
 
This ashpan may help. My UDS is now upside down, I cut the bottom out so that I could get to the ashes for easy cleanup. I used the lid from a donor and made a ashpan. I cut is about 1.5" smaller then the drum so the drum would be easy to lift over the charcoal basket and ashpan and set on the stand. After several cooks I think I am having a little trouble controlling the temps due I think to some air intake where the drum meets the stand. Nothing major, but I am going to weld two rings to the stand for the drum to fit into. I will put stove gasket between the rings so that it should be pretty airtight around the bottom of the drum allowing me more control with the intakes.

what do you mean upside down? pics? Did I miss something?
 
Hey everybody been reading this for 2 days to get thru it all. GREAT STUFF, just got a Harbor Freight ad and the step drills are on sale with a coupon $8.99 for 3 different ones.
 
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You got it bro, just kick it once an hour to drop the ashes and she'll run there all day long!!! :biggrin:

Well, unfortunately it didn't work out that way. All my charcoal burned out in the middle of the basket, failing to ignite the unlit coals and burn outward. It looks as though giving the drum a good whack let the ash fall through the basket and the lit coals may have lost contact with the unlit.

I left all 4 inlets and the exhaust wide open with the temp at 205* and just let it go. When I got up this morning I saw that the charcoal had burned out, leaving about 3/4 of it unburned. I think next time, instead of making a cavity in the middle of the unlit and pouring in the lit, I'm just going to pour the lit on top and let it spread out a little. I see that many just light there's in the basket with a weed burner and this would be similar.
 
Well I'm giving the UDS another shot here, but this time with food. Got a fatty and 4.5# of chicken wings going over briquettes and some apple wood chunks. This time just poured 1/2 chimney of lit coals over the unlit rather than worrying about making a cavity in the center.

I've noticed so far and I don't know if its because of drippings hitting the coals or just because I poured the lit over the unlit, but I'm getting higher temps with fewer vents open. Hope to have some pics to post later (if I can figure out how :lol:).
 
Keep after it man and try not to open the lid as this will help keep the temos under control. How wide is your fire basket?
 
This time just poured 1/2 chimney of lit coals over the unlit rather than worrying about making a cavity in the center.

Yeah, I just dump the lit coals evenly over the top of the fire basket. I dump them fully lighted and grey... Never had a flame out unless I deliberately close the vents.
 
This seems like a good thread for a sticky. What about it mods? Is is too long?
 
Keep after it man and try not to open the lid as this will help keep the temos under control. How wide is your fire basket?

My charcoal basket is 16" diameter and 8" deep. Going well so far - about 45 minutes into the cook the drum is holding in the 240* - 245* range with only my 1/2" ball valve barely cracked open and exhaust (webber kettle lid) wide open.
 
Perfect! Enjoy the trouble free smokin.:mrgreen:
 
Still going great! Drum temp has been up and down between 239* & 246* with no adjustments. I'm 1-1/2 hours into the cook and still only have my 1/2" ball valve just barely cracked open and exhaust wide open - sitting on 246* with the fatty at 143*.
 
hcarter, the thread is roadmapped. Got the UDS going today with loin ribs, boneless butts and fatties.


I am jealous. I didn't get to do anything had to work third shift Sat night/Sun morning. Just too tired. Smoke on Brother.
 
Man, I can't believe I read the whole thread. (not in one sitting) Have acquired 2 drums, with lids, and have started acquiring parts and pieces. Will start build soon.
 
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