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View Full Version : UDS burn issues after 4 hours


B4tn
08-29-2015, 09:36 AM
Having issues with my UDS after approximately 4 hour or so. Everything is rock solid until I hit about the 4 hour mark then temps drop and the only way to get things back to normal is to kick, shake, or stir the charcoal I have a weber 18.5 grate with expanded metal around it for the basket like every other UDS basket. I'm thinking about cutting a door so I can easily move the charcoal around. Kicking it works but ash gets everywhere. Anyone else have this issue?

ebijack
08-29-2015, 09:44 AM
What do you have for intake and exhaust. You shouldn't be having that problem at all.

Fwismoker
08-29-2015, 09:46 AM
Never had that issue in any of my cookers. My mini for example goes 8-10 hours with no more than a bump on the vents occasionally.

I'm sure you have something like this? Maybe change the way you set up your fire, and intakes are all you ever need to mess with.

http://i1226.photobucket.com/albums/ee407/Amerivet/Jimmy%20Build/P1010497_zps84abc674.jpg (http://s1226.photobucket.com/user/Amerivet/media/Jimmy%20Build/P1010497_zps84abc674.jpg.html)

retired trucker
08-29-2015, 09:54 AM
How high off the bottom of your drum is the fire basket? It should be 3 to 4 inches so there is space for the ashes to fall into. If not enough air space, then the fire will choke out and not burn.

Omar

tgstrang
08-29-2015, 09:59 AM
I agree with Omar. Sounds like the ash build up is choking out your fire. Got any pics of your basket and/or ash catcher set up? That might help.

fat_bastard
08-29-2015, 10:00 AM
How high off the bottom of your drum is the fire basket? It should be 3 to 4 inches so there is space for the ashes to fall into. If not enough air space, then the fire will choke out and not burn.

Omar

This is your problem. The ash has nowhere to go and is smothering your fire. Put some long bolts through the grate with with large washers holding the fire basket up.

B4tn
08-29-2015, 10:06 AM
My basket is exactly like above. It sits about 3" above the bottom. Intake vents are 2" up from the bottom. Two are capped and the third is a ball valve. I'm currently 10 hours in to a Boston butt. I may try and raise the basket another inch and see if that helps for my next smoke

ebijack
08-29-2015, 10:26 AM
What about your exhaust? Since your basket is 3" up off bottom. Air flow is everything. In and out.

mikemci
08-29-2015, 10:27 AM
I have the same issue at about the 6 hr. Mark. I keep a piece of rebar to go through one of the intakes, get it under the basket and give it a jiggle.

B4tn
08-29-2015, 10:34 AM
Glad I am not the only one. Lol exhaust is a weber lid.

B4tn
08-29-2015, 10:37 AM
I am using the cleaning rod from one of my mosin nagant's through the intake hole. Lol

Bludawg
08-29-2015, 12:36 PM
I bet you using KBB shat charcoal. Switch to Lump of Stubbs no more issues.

B4tn
08-29-2015, 12:53 PM
I bet you using KBB shat charcoal. Switch to Lump of Stubbs no more issues.

Yup! I having been itching to try lump, but so far all my cooks I have used KBB. Maybe before I change my basket up I will try it and see if it is different

jbounds286
08-29-2015, 12:58 PM
imagine that...issues with KBB...get that lump goin!

MaximumJEFF
08-29-2015, 01:31 PM
I switched to lump after my first cook. It goes 18-20 hours no problem