The BBQ BRETHREN FORUMS.

The BBQ BRETHREN FORUMS. (http://www.bbq-brethren.com/forum/index.php)
-   Q-talk (http://www.bbq-brethren.com/forum/forumdisplay.php?f=5)
-   -   Could it be my nipples? (http://www.bbq-brethren.com/forum/showthread.php?t=49177)

smooookin 09-13-2008 09:16 PM

Could it be my nipples?
 
I have built several drums but this one is killing me. I switched from 3 1 inch to 4 1/2 inch nipples for the intake. I had never had to remove the 3rd cap using the larger intakes.

I can get things going, the temp seems to settle in, I put on the goodies and the fire will practically go out. I mean if I put things on at 230 with in 10 minutes the temps will start a steady drop until I either remove the third cap or occasionally I have to crack the lid just a bit.

This drum just doesn't seem to want to cooperate. So, is it my nipples? Should I maybe change one out for a 3/4?

Looks like it will be a long night as I have a 12lb packer that needs to be eaten around 7 tomorrow night. I figure I will put it on around midnight and sleep light.

jeffjenkins1 09-13-2008 09:17 PM

Not enough air flow, what size exhaust (although I don't think it matters)?

Jeff

BBQ Grail 09-13-2008 09:18 PM

This is the thing about drums that just fascinates me. I use 4 1/2 inch nipples. Three have caps and one has a ball valve.

I rarely need to remove more than one cap. For exhaust all I use is a four inch long threaded pipe in the lid.

smooookin 09-13-2008 09:22 PM

Quote:

Originally Posted by trp1fox (Post 737121)
This is the thing about drums that just fascinates me. I use 4 1/2 inch nipples. Three have caps and one has a ball valve.

I have the same set up. As for exhaust, I used a 2 inch street "L" in the large bung hole and sometimes have removed the small plug as well.

The grate for the fire basket sets approx 2 1/2 inches off the bottom of the drum.

ON THE FARM 09-13-2008 09:26 PM

Could your fuel be damp?
I have 3 one inch intake on 1 of my drums and only 2 one inch intakes on the other 2 drums.
I have never even opened 2 intakes at all during a cook (14 hour butt cook).

smooookin 09-13-2008 09:28 PM

Quote:

Could your fuel be damp?
I thought about that but I have gone through several bags(5 or 6) of RO while fighting this thing. Also the RO was purchased at different locations.

BBQ Grail 09-13-2008 09:30 PM

RO Lump?

I can't use lump in my UDS. It just won't work. Regular briqs work just find. Maybe 1/2 nipples won't work with lump.

jeffjenkins1 09-13-2008 09:31 PM

I don't use lump either, I only use briqs.

Jeff

1_T_Scot 09-13-2008 09:32 PM

3 1" nipples have an equivalent flow area of about 9.45
4 1/2" nipples have an equivalent flow area of 6.28

So would you need 2 more to get enough air?

smooookin 09-13-2008 09:33 PM

HMM, All I use is RO. I works great in my other drums, maybe RO likes big nipples.

I can just imagine what a mess it will be to change to a larger size since I dont weld.

smooookin 09-13-2008 09:35 PM

Quote:

Originally Posted by 1_T_Scot (Post 737136)
3 1" nipples have an equivalent flow area of about 9.45
4 1/2" nipples have an equivalent flow area of 6.28

So would you need 2 more to get enough air?


Usually the drums with the one inch nipples only need one cap off and maybe crack the valve one other one.

If I open 2 and a half or three and a half intakes the temp goes to high. Maybe this drum just doesnt like BBQ.

Meat Burner 09-13-2008 10:32 PM

I have 4 1/2 inch valves in all my drums. The nipples inside are 1 inch and usually I have all four open a little to get an even burn on lump or briqs. Strange.

Midnight Smoke 09-13-2008 10:57 PM

Quote:

Originally Posted by smooookin (Post 737137)
I can just imagine what a mess it will be to change to a larger size since I dont weld.

Get a Step-up bit, it will do it fast and easy. Just go a little at a time so not to get to big a hole.

Beerwolf 09-14-2008 12:22 AM

maybe try using some sort of blower ( hair dryer mod) at the intake just to see if you are indeed air starved before you start hacking?

Norcoredneck 09-14-2008 12:51 AM

I started out using 3/4" to 1/2" bushings. I had to have 2-3 open. I switched to 3/4" short nipples and never looked back. Seems if you watch the post the longer the nipples the more restriction. Also not that we have a lot here but humidity seems to affect how a drum burns.


All times are GMT -5. The time now is 10:46 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
vBulletin Optimisation provided by vB Optimise v2.6.0 Beta 4 (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
2003 -2012 BBQ-Brethren Inc. All rights reserved. All Content and Flaming Pig Logo are registered and protected under U.S and International Copyright and Trademarks. Content Within this Website Is Property of BBQ Brethren Inc. Reproduction or alteration is strictly prohibited.