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Today I purchased an MTH Railking 30-73432 Smoking tank car and when I got it home and put it on the track I realized immediately something wasn't right. I took the car apart to investigate because I could tell it was getting excessively hot on the top side of the tank car. Now there is a smokestack not seen in the picture that came with the item and leads to the top of the tank car hatch, but upon looking down that stack, when I initially put it on the track, I could see the element down the stack was getting red hot. And I mean RED HOT!  When I took the tank car apart and put voltage to the track in the video is what I saw. Now it is my guess that removing the stack allowed for increased air to pass through the element causing what you see in the video, however it should never get to this point. Definitely a defect somewhere and definitely Something to consider if you purchased an MTH Railking smoking tank car. Before you watch the video here's some pre-vid information. 

 

I am using the included  MTH smoke fluid

21 volts to the track from the Z4000

Disassembled and lying loose on the chassis which is why you hear the excessive fan vibration.  Unit did not sound like that when in the car.

MTH # 30-73432

 

 

 

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Originally Posted by rustyrail o scale:

First off was this car new factory sealed? If not I would change the wick and clean the bowl good then try it again. If anyone has had access to that car there is no telling what's inside that smoke unit.

Yes Sir, Sealed and new in box. Just a defect I'm sure. I've got a great LHS so I will return it and get another, But good advice. Thx.

 

Marc

From the sounds of the fan and looks of the smoke, I would say there is something wrong with the voltage regulator for the smoke unit. The fan sounds like its running way too fast and it looks as though it is pushing a lot more smoke than normal.  It looks as though the element is getting so hot its igniting the smoke fluid. You're most likely going to have to replace the board and the smoke unit or at least rebuild it with new wick, elements, motor and fan

"Train cars roasting on an open layout.

 

Plastic melting off in drips.

 

'We're on fire!' being yelled by the wife,

 

And children bringing marshmallows to the roast.

 

 

Everybody knows a freight car and a smoke unit,

 

Will fill the room with bright orange  flames.

 

Soon there'll be sirens,

 

Coming up the driveway.

 

And Firefighters spraying your house down.

 

 

And so I'm offering this simple phrase,

 

For kids from one to ninety-two.

 

Although it's been said many times, many ways.

 

'turn the voltage down. today!' "

 

 

 

 

 

Last edited by EscapeRocks

That's SOOOOOO Cool!

 

The sad part is, you're certainly right, it should NOT flame!

 

I think this is clearly the little regulator board, that's where I'd start.  I have a couple of the smoking tank cars, they don't flame, though that would be an interesting option.

 

 

 

FWIW, I noticed a Legacy system there, and you mentioned 21 volts.  You do realize that in large print in virtually every Legacy or TMCC engine manual they specify 19 volts maximum, right?

I had a S2 ATSF do the same thing and going under a Christmas tree no less, I was very happy I saw it before it torched the tree. It got my attention at first because it stated to put out a large amount of smoke, so if you have a smoke unit putting out a great amount of smoke you may want to check on it.

 

Chestnuts roasting on an open fire ...

Last edited by John Pignatelli JR.
Originally Posted by Paul Kallus:

Holy Smokes!

 

Question: is there a prototypical tank car that really smokes in operation, other than one in an accident and contents burning? I don't understand the rationale behind this car.

For things very cold, like the Liquid Nitrogen NASA variants, it can supposedly be to simulate the visible venting.  (Though that's possibly a stretch too, as it would not likely be all be coming from dead center on the dome)

 

For things like coffee , it's basically a cute gimmick.

 

-Dave

Last edited by Dave45681

On the GE "Flaming Diesels", it's funny that we - I do - find that so amusing, as, not too long ago, we pulled all or nearly all our trains with a locomotive type and technology that was actually designed to run around among people and pets with a fire it its belly, all the time.

 

You know - tens of thousands of these, running all over the place, simultaneously, day and night:

 

IMG_0834

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DMASSO posted:

We can all joke about it but the story could have been different. Lucky you were watching it. It looked like my house chimney fire that I experienced years ago.

Absolutely.  I have sevaral of these things, I'll now make an extra effort to keep a good eye on them.  One recent one I haven't tried out yet, hope it's not from the same batch as the one in the video.

-Dave

Last edited by Dave45681

As you can all imagine this created a huge concern at MTH and they contaced me directly.  I was impressed by their quick reaction and undeniable concern for what they saw. They took immediate action to retest their factory board sample and test a couple cars from the 2015 production lot.  Not being able to reproduce the results in the video they would like to have the tank car back to further investigate the defect.  It was my intent to bring this to light for those out there that had purchased the smoking tank car and to be aware of what could potentially happen. I believe as hobbiests we have that responsibility.

Marc 

gunrunnerjohn posted:

Anything with a smoke unit can suffer the same fate.  I've repaired a few locomotives where the regulator croaked and cooked the smoke unit.  I actually saw one of them go at our club, very spectacular!

 

Hey John,  Thanks for the heads up on the 21 volts and Legacy system.  I'll usually back the voltage down to 19 volts, but have to admit, sometimes I forget.  

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