Smoke don't come out of the stack

[Heinz D]

Hi
on my industrial Mogul the smoke of the smoker is staying inside the smoke box. If I remove the stake, the smoke comes out strong, but I put back the stack in his hole the smoke stays inside the smoke box. What can I do?

Heinz

[Tom Lapointe]

If it's actually generating smoke, at least it's OK electrically (especially if you run DCC like I do, they do eventually burn out).   The smoke unit is designed to "wick" the fluid up from the reservoir; sometimes it can get clogged.    Fortunately, the "cure" is simple enough  - with the smoke unit operating, trying blowing sharply straight down the stack.  I've often found that will clear the clog, & the loco will smoke considerably better.   You may also wish to consider trying a different type of smoke fluid.    Hope that helps!    Tom

[Heinz D]

Thank you Tom for the answer,

of corse the smoke unit is operating by the DCC decoder - what else? I actaully use a Zimo decoder with modulating heat voltage. The voltage change if the engine ist waiting, speed up or idling with constant speed. The Zimo decoder has a timer programmable by a CV adress for prevent the burn out of smoker. The smokeunit is well smoking if I pull out the stack through the hole in top of the smoke box. If I push back the stack in his hole, the smoke stay in the smoke box. A little bit of smoke comes out on the bottom of the smoke box. If I'm blowing into the stack a cloud of smoke leaves the smokebox below the bottom, but no smoke on the place where he should leave the stack.

I was testing with the smoke fluid from Seuthe, Magic smoke and SR 24 these 3 fluids are on stoke in Europe. I see no difference by my problem.

It' is not the smoke unit that don't work it's the small hole through the stack which stops the smoke
Heinz

[Loco Bill Canelos]

Maybe you can make the hole larger.

[Heinz D]

Yes, the genuine stack has an edge of 90°. I've made a phase of 45°, but hasn't helpfull. I think the best way is to hit the Venturi geometrie of the inner side of the stack. See Wikipedia below Venturi. Each carburator of a car has a venturi tube inside.

I've beginning to make my own smoke stack on mi lathe, but maybe another one have a better idea.

Heinz

[Heinz D]

I've finished now my own smoke stack. The hole has 10% more diameter, but the smoke don't leave the stack really good. It's a little bit better as with the genuine stack, but it's only a little fog not a smoke like it does without a stack.

Has somebody another idea to bring the smoke out of the stack?

Heinz