|
Q-talk *ON TOPIC ONLY* QUALITY ON TOPIC discussion of Backyard BBQ, grilling, equipment and outdoor cookin' . ** Other cooking techniques are welcomed for when your cookin' in the kitchen. Post your hints, tips, tricks & techniques, success, failures, but stay on topic and watch for that hijacking. |
|
Thread Tools |
10-03-2012, 04:45 PM | #1 |
Knows what a fatty is.
Join Date: 09-07-12
Location: Los Angeles, CA
|
Is the "chimney effect" just a myth?
Hello Brethren. I have a question about my UDS exhausts. Will threading the 8 holes in my lid with nipples create any chimney like effect (if that exists), or is it exactly the same as just having the holes bare. Does having a chimney actually "draw" the air/smoke out? Maybe this only happens if the chimney is a certain length.
I'm debating whether I should thread the holes with a pipe plug to close it off, or just install the nipples and use caps for cutoff... |
|
10-03-2012, 05:07 PM | #2 |
is Blowin Smoke!
Join Date: 06-23-07
Location: North Berwick, ME
|
I would plug thos 8 smaller holes off and put in a single 2 1/2" to 3" diameter X 12" long exhaust pipe.
__________________
Tim [COLOR=darkred]“Travel is fatal to prejudice, bigotry, and narrow-mindedness, and many of our people need it sorely on these accounts.”[/COLOR] - Mark Twain - Beautiful family - Home made trailer mounted reverse flow offset w/ vertical chamber, Weber OTG and an ECB |
|
10-03-2012, 05:12 PM | #3 |
Knows what a fatty is.
Join Date: 09-07-12
Location: Los Angeles, CA
|
My original idea was to do this, however, I have a flat bung-less lid and my step drill only goes to 1-3/8'', which would make a hole fit for an even smaller pipe (maybe 1-1/4'').
|
|
10-03-2012, 05:22 PM | #4 |
somebody shut me the fark up.
Join Date: 06-26-09
Location: sAn leAnDRo, CA
|
I have seen UDS's that work fine with several small holes in a flat lid. Some that even just had pieces of steel or magnets to cover the holes. I agree that a larger chimney would work better. But, you have what you have. Go for it and see.
__________________
[COLOR=DarkGreen][COLOR=DarkRed][SIZE=1]me: I don't drink anymore Yelonutz: me either, but, then again, I don't drink any less [/SIZE][/COLOR][/COLOR][SIZE=1][COLOR=DarkRed] [COLOR=Pink]SSS[/COLOR] [/COLOR][/SIZE] |
|
10-03-2012, 05:35 PM | #5 |
is One Chatty Farker
Join Date: 12-11-07
Location: N. Andover, MA
|
I sometimes will slip a can over the exhaust on my WSM. Certainly seems to produce a better draw than without. Could be just my imagination though.
|
|
10-03-2012, 05:41 PM | #6 | |
Babbling Farker
Join Date: 03-14-05
Location: Central Arkansas
Name/Nickname : Joe
|
Quote:
You can read about it on Wikipedia. I'd drop a link but for some reason the forum won't let me. I keep getting an error
__________________
Joe Falcon MK V gaseous grill w/Grill Grates, OK Joe Longhorn w/ vertical - now gone, Char Griller Akorn, Camp Chef PG24SG, Weber 22" OTG w/SNS components |
|
|
Thanks from:---> |
10-03-2012, 05:42 PM | #7 |
Knows what a fatty is.
Join Date: 09-07-12
Location: Los Angeles, CA
|
Ideally I would like to make a chimney, theres just no way for me to make a 2 inch hole without some outside help. I even thought of making 2 exhausts each 1-1/2''. I don't mind doing extra work or buying a few extra parts. I see this build as a weekend project and I would love to maximize its potential. Can't wait to try it out!
|
|
10-03-2012, 09:20 PM | #8 |
is one Smokin' Farker
Join Date: 06-10-12
Location: Bloomington, IL
|
For my recent build I grabbed a 2 1/2" hole saw from Napa. It was fairly inexpensive and made quick work of the job. Added bonus is I now have the tool for future builds!
Not a typical UDS build by any means but you can see what I did...
__________________
WSM 22.5", One-Touch 22.5", Redhead 18.5" Smoke Joe Silver, Q200, "Mr. T" |
|
Thanks from:---> |
10-03-2012, 09:33 PM | #9 |
somebody shut me the fark up.
Join Date: 01-26-10
Location: Virginia
|
__________________
Operation BBQ Relief Founding Member - I am Obsessive Compulsive about BBQ. Google it. |
|
Thanks from:---> |
10-03-2012, 10:05 PM | #10 |
is One Chatty Farker
Join Date: 08-23-10
Location: Austin Texas
Name/Nickname : D
|
I have what I think your talking about, and they work great for me most the time I only open 4 but to crank up the heat I'll open them all. I put them on cause of wind it helps with temperature control for me.Also keeps rain out and chokes out the fire fast using lump.
Sent from my SGH-T999 using Tapatalk 2
__________________
Pitmaker Magnum Snipper * UDS* Copper Kettle |
|
10-03-2012, 10:05 PM | #11 |
Babbling Farker
Join Date: 04-03-10
Location: Cypress TX
|
The 8 hole design with no nipples works fine. Don't over think this. KISS!
__________________
J Crunch |
|
10-04-2012, 06:50 AM | #12 |
somebody shut me the fark up.
Join Date: 07-14-06
Location: Wyocena/Pardeeville, WI
Name/Nickname : Clark
|
A Bush's bean can with both ends removed fits snugly over the top vent tabs and has a noticeable affect on WSM performance in less than ideal weather conditions.
__________________
Clark My Boys: Joseph (EI); Andrew (EE); Daniel (EE) My Toys: 10 WSMs (B, C, E, DH, DA, EZ, DZ, EO, DU, DR); 5 - 22.5" Bar-B-Q-Kettles; 2 - 18.5" Bar-B-Q-Kettle; 4 WGAs (EZ, DE, N, B); 2 SJPs ( DR, DR); 2 Smokey Joes (A, K); Brinkman Cimmaron. "For when democracy becomes tyranny, those of us with rifles still get to vote" |
|
Thanks from:---> |
10-04-2012, 07:02 AM | #13 |
Knows what a fatty is.
Join Date: 09-13-12
Location: Edmond, OK
|
I've only cooked twice on my week-old UDS, but I used the KISS method with 8 1/2" holes in a 15" diameter across the top of my flat lid. So far it's worked great and seems to offer plenty of exhaust, neither of my meals were ashy/sooty. In fact, despite calibrating my thermo, I've worried through both cooks that it was stuck because it held at the exact temp I wanted it to for the couple of hours I needed.
I also smoke on my patio with a large overhang so it's safe from precipitation. In furthering the KISS method, when it's time to choke the flame, I shut off my intake(s) and tear off small bits of aluminum foil to plug the holes. I do so in a manner similar to bits of toilet paper on your bleeding shaving nicks. Leaving the bits flat, I use my fingertip to settle them down somewhat into the holes and then I use my palm to flatten the foil around the holes. Simple and secure and within an hour or so my thermo reads ambient temps. |
|
10-04-2012, 07:21 AM | #14 |
Quintessential Chatty Farker
Join Date: 06-29-11
Location: Greeneville TN
|
A steel pipe cap spells burned hands to me. How about a cork? Just an idea.
|
|
10-04-2012, 08:27 AM | #15 | |
is one Smokin' Farker
Join Date: 06-10-12
Location: Bloomington, IL
|
Quote:
Good to know!
__________________
WSM 22.5", One-Touch 22.5", Redhead 18.5" Smoke Joe Silver, Q200, "Mr. T" |
|
|
|
|