UDS intake pipe diameter

Freddy j · 02-06-2013, 11:05 AM

what size pipe & valve is everyone using on UDS intake? also, does one intake provide enough air to get the temp up to 325-350F?

gtr · 02-06-2013, 11:12 AM

Mine are 1", I believe most people use 3/4". One intake is probably not enough - I have 3, and usually shut one down once the pit is going and have one wide open and the other I adjust with a ball valve. I normally cook at higher heat - usually around 300. It's probably worth mentioning that my exhaust is 2" pipe with an elbow (always open), since exhaust figures in to air flow & pit temps.

Warthog · 02-06-2013, 11:13 AM

3/4" pipe and valve. You will need at least 3 intakes. 1 with valve and 2 with caps

Kloogee · 02-06-2013, 11:21 AM

I think you'll find there are a million different combinations different people have had success with. From my reading on the forum, I think the majority of people have gone with 3 intakes of 3/4". That is what I went with and so far so good for me.

Good luck with your project. Please make sure to share pics when you finish.

pal251 · 02-06-2013, 11:23 AM

I have 4 3/4 pipes. One has a ball valve and the others have caps. Only used it a couple times but if i remember right the last time it stayed at 250 exactly with just the ball valve being open. If I come across any more ball valves I'm gonna replace the nipple caps with it

ITBFQ · 02-06-2013, 11:37 AM

If you're going to build a UDS, you absolutely have to read the UDS thread - you will learn a TON. And, don't over complicate it. The KISS principle applies here.

Carbon · 02-06-2013, 11:38 AM

With four-3/4" clear openings I can easily reach 350°F, faster with more lit coals to start out with if that's where you want it to go.

Garrett · 02-06-2013, 11:43 AM

I have 1 3" intake that I made a makeshift daisy wheel out of. Works great, I can cook as low as 225 and up to 450 with steady temps.ImageUploadedByTapatalk1360172625.289397.jpg

Freddy j · 02-06-2013, 11:51 AM

Quote:

Originally Posted by Garrett

I have 1 3" intake that I made a makeshift daisy wheel out of. Works great, I can cook as low as 225 and up to 450 with steady temps.Attachment 75478

that is awesome! i would love that for my PCB!

conns79 · 02-06-2013, 12:05 PM

Just finished mine a couple of weeks ago, and I went with 3-3/4, 2 caps and 1 ball valve. With 2 capped, and the ball valve open, I was holding steady at 225 with an outside temp of 20. With 2 open, I was at 325 and it was still slowly rising before I capped it.

Bludawg · 02-06-2013, 12:33 PM

I have 3 X 3/4" 2 nipples and one ball valve, I am about to build a new one with 1 3" intake.

Mark · 02-06-2013, 01:36 PM

Quote:

Originally Posted by Garrett

I have 1 3" intake that I made a makeshift daisy wheel out of. Works great, I can cook as low as 225 and up to 450 with steady temps.Attachment 75478

what you did except use the whole bottom of the UDS

foam2 · 02-06-2013, 02:09 PM

with the vent at the bottom I think you may have some issues with ash clogging up your intake especially during long cooks.

J-Rod · 02-06-2013, 03:04 PM

One 1-1/2" intake with draft pipe, ball valve up high and easy to reach. I can reach 350* easy, run it half open it'll cruise 275* for hours, and my fire burns evenly. No need for 3+ separate intakes IMO, not to mention capped ones mounted down low just mean bending over which is a pain in the ass especially if your smoker is in a tight area. Like others said keep it simple man.

Garrett · 02-06-2013, 03:04 PM

Quote:

Originally Posted by Freddy j

that is awesome! i would love that for my PCB!

PM me and I will be glad to make one up and send it to you.

02-06-2013, 11:05 AM	#1
Freddy j is one Smokin' Farker Join Date: 11-22-12 Location: Boston Downloads: 1 Uploads: 0	UDS intake pipe diameter what size pipe & valve is everyone using on UDS intake? also, does one intake provide enough air to get the temp up to 325-350F? __________________ Big Joe Kamado WSM 22.5" wsm mini

02-06-2013, 11:12 AM	#2
gtr Quintessential Chatty Farker Join Date: 10-16-10 Location: Culver City, CA Downloads: 2 Uploads: 0	Mine are 1", I believe most people use 3/4". One intake is probably not enough - I have 3, and usually shut one down once the pit is going and have one wide open and the other I adjust with a ball valve. I normally cook at higher heat - usually around 300. It's probably worth mentioning that my exhaust is 2" pipe with an elbow (always open), since exhaust figures in to air flow & pit temps. __________________ 50" Klose BYC, Backwoods Chubby, UDS, 26" & 22.5" Weber Kettles, Jumbo Joe, WGA, WSJ/MUDS, Jumbo Old Smokey, Pig Hibachi, a piece of expanded metal I throw over the fire pit sometimes, Stealthy Black & Vol Orange Thermapens Displaced East Tennesseean Proud recipient of a Tick Former outlaw MOINK baller, now IMBAS Certified, but still lookin' over my shoulder. Golden Goose Egg - Got 2 in the nest baby! SPFP Mayzie's keeping an eye out for you! WTFWGALD?

02-06-2013, 11:13 AM	#3
Warthog is one Smokin' Farker Join Date: 10-20-09 Location: Cliffwood Beach, NJ Downloads: 0 Uploads: 0	3/4" pipe and valve. You will need at least 3 intakes. 1 with valve and 2 with caps __________________ "Two Hungry Hogs" bbq team. UDS CharGriller w/SFB Weber 3(1987)

02-06-2013, 11:37 AM	#6
ITBFQ Knows what a fatty is. Join Date: 09-17-12 Location: Aurora, IL Downloads: 0 Uploads: 0	If you're going to build a UDS, you absolutely have to read the UDS thread - you will learn a TON. And, don't over complicate it. The KISS principle applies here. __________________ UDS; ECB; Non-Thermapen; Cold Brews; Kettle; Commercial Series Gasser; Some Other Crap, Too!

02-06-2013, 11:38 AM	#7
Carbon is One Chatty Farker Join Date: 08-24-08 Location: Los Angeles Downloads: 0 Uploads: 0	With four-3/4" clear openings I can easily reach 350°F, faster with more lit coals to start out with if that's where you want it to go. __________________ UDS / Mini-WSM / Weber 22.5 OTG / Modified ECB / Lodge hibachi / 34" WFO.

02-06-2013, 11:21 AM	#4
Kloogee On the road to being a farker Join Date: 09-05-12 Location: Midwest Downloads: 0 Uploads: 0	I think you'll find there are a million different combinations different people have had success with. From my reading on the forum, I think the majority of people have gone with 3 intakes of 3/4". That is what I went with and so far so good for me. Good luck with your project. Please make sure to share pics when you finish.

02-06-2013, 11:23 AM	#5
pal251 Full Fledged Farker Join Date: 06-07-12 Location: kansas Downloads: 0 Uploads: 0	I have 4 3/4 pipes. One has a ball valve and the others have caps. Only used it a couple times but if i remember right the last time it stayed at 250 exactly with just the ball valve being open. If I come across any more ball valves I'm gonna replace the nipple caps with it

02-06-2013, 11:43 AM	#8
Garrett Take a breath! Join Date: 10-03-12 Location: Gastonia North Carolina Downloads: 0 Uploads: 0	I have 1 3" intake that I made a makeshift daisy wheel out of. Works great, I can cook as low as 225 and up to 450 with steady temps.ImageUploadedByTapatalk1360172625.289397.jpg __________________ My arsenal, Stumps Clone, Two Modified offsets, open pit with grate and rotisserie,UDS, and a free to me Weber One Touch Silver 18.5" kettle

02-06-2013, 12:05 PM	#10
conns79 Found some matches. Join Date: 01-11-13 Location: Kingston, PA Downloads: 0 Uploads: 0	Just finished mine a couple of weeks ago, and I went with 3-3/4, 2 caps and 1 ball valve. With 2 capped, and the ball valve open, I was holding steady at 225 with an outside temp of 20. With 2 open, I was at 325 and it was still slowly rising before I capped it. __________________ UDS

02-06-2013, 12:33 PM	#11
Bludawg Babbling Farker Join Date: 07-04-09 Location: Jonesboro,Tx Downloads: 0 Uploads: 0	I have 3 X 3/4" 2 nipples and one ball valve, I am about to build a new one with 1 3" intake. __________________ I never met a Cow that I didn't like with a little Salt & Pepper! Certified PORK-A-HOLIC

02-06-2013, 02:09 PM	#13
foam2 Knows what a fatty is. Join Date: 12-02-11 Location: chicago, illinois Downloads: 0 Uploads: 0	with the vent at the bottom I think you may have some issues with ash clogging up your intake especially during long cooks.

02-06-2013, 03:04 PM	#14
J-Rod is one Smokin' Farker Join Date: 08-15-12 Location: Detroit Downloads: 0 Uploads: 0	One 1-1/2" intake with draft pipe, ball valve up high and easy to reach. I can reach 350* easy, run it half open it'll cruise 275* for hours, and my fire burns evenly. No need for 3+ separate intakes IMO, not to mention capped ones mounted down low just mean bending over which is a pain in the ass especially if your smoker is in a tight area. Like others said keep it simple man. __________________ "Hey careful man there's a beverage here!!!"