Four Nipples vs One Big Hole

[darthtrader]

UDS: Four Nipples vs One Big Hole

Hello Brethren!

I'm planning to build my UDS this weekend (finally) and would like some UDS veteran builder advice. In your opinion, which has better and more even air flow: four holes with nipples or one big three or so inch hole with a vertical intake pipe?

 

[Stan41]

I'm certainly no expert, but when I built mine I used 4 holes with nipples. I think there is more control of the air flow this way.
Stan

 

[bruskee]

Best thread title in history.!

 

[Dr_KY]

I read the title and thought this was going to be a Woodpile thread.

The jury is still out on what works 'best' for a UDS so IMHO I would say start simple and go from there. I started with two 3/4 intakes and one 2'' exhaust and I burn just fine and have plenty of control.

Remember the wonderful thing about a UDS is it's simplicity.

 

[darthtrader]

I read the title and thought this was going to be a Woodpile thread.

LOL! Maybe I should put UDS in the title then.

 

[Dr_KY]

Not a bad idea ( I would have and did go with the hole though)

 

[darthtrader]

Not a bad idea ( I would have and did go with the hole though)

How's temperature control going for you, Dr? Any hot spot problems?

 

[Dr_KY]

Nah.. my meats usually so big all I have to do is rotate it but that's just an old habbit. Others may have differant items on at the same time but i'm not there yet.

The temps are very stable running one 3/4 open and one 3/4 ball valve about half way. I can see trying to keep temps under controll using omre that two inlets being a problem simply due to the burning of the fuel but I haven't ever run anything on the sort.

 

[drbbq]

I thought this was a poll.

 

[Divemaster]

I read the title and thought this was going to be a Woodpile thread.

This is not what I expected when I read the title!!!!

Don't own one but you sure suckered me in!!

 

[Barbarian]

Best thread title in history.!

Almost fell out of my chair onto the floor at that response.

Now 10 minutes later I have to say that I used the 4 intake 1" nipple route. I think it could be hard to control with only one intake but maybe someone needs to give it a go and let us know how it works.

 

[Kevin Garceau]

I see alot of ball valves..... do some put ball valves on all 3 or 4 holes? Does that get a bit complicated? Or open a few holes and put valves in half? One?

 

[Puppyboy]

Best thread title in history.!

Not woodpile, not woodpile, not woodpile, & kinda dissapointed. :lol:

 

[OSD]

I only have one intake, it's 2" and one exhaust, 3". I read the UDS thread a couple times and other threads on here and decided to just try the one intake. I kept reading about people putting in 3-4 intakes for better air control and burns because the air could get in from different directions. But then in the next statement alot of them are saying that when they are up to temp and cruising along that they only have one valve open or 2 valves partly open. so I just did the one intake and it's doing fine. JMHO:grin:

 

[Dr_KY]

I only have one intake, it's 2" and one exhaust, 3". I read the UDS thread a couple times and other threads on here and decided to just try the one intake. I kept reading about people putting in 3-4 intakes for better air control and burns because the air could get in from different directions. But then in the next statement alot of them are saying that when they are up to temp and cruising along that they only have one valve open or 2 valves partly open. so I just did the one intake and it's doing fine. JMHO:grin:

BINGO!!

 

[Mark]

If you ever want to run hot (liked for grilled pizza) I doubt that any of these air intake approaches will suffice. Well, maybe if you use 4, 2-inch openings. But you'd probably spend $100in ball valves. That's why I did this.

 

[sparky66]

If you ever want to run hot (liked for grilled pizza) I doubt that any of these air intake approaches will suffice. Well, maybe if you use 4, 2-inch openings. But you'd probably spend $100in ball valves. That's why I did this.

What did you do?

Sparky

 

[mn_big_dog]

I just want to say thanks for bringing this one back from the dead. THE BEST post title EVER. Wasn't a member back in 2008 so I'm glad I got to see this

 

[Tulse]

I have one 5/8" and one 3/4" hole in a slider configuration (the holes are 1.5" apart).

Those holes remain wide open at first. For the rest of the cook, both holes are closed down to b/w 1/4 - 3/4 of their full size. I am still amazed at how little open hole area you need to run a UDS.

My original plan was to put another 3/4" hole on the opposite side. I might still need to do that to if I want to get well above 300°, but there's no need yet as it runs anywhere I choose between 225° and 280°.

 

[Smoothsmoke]

:shocked: