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Old Mar 16, 2006, 10:08 PM
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Train smoke unit

I have never seen a smoke unit in a train before and cannot find anything about these smoke units.

Instead of using smoke bombs, I thought it would be a neat idea if we can stick a train type smoke unit into a Electric plane.

Any thoughts?

-Tomi
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Old Mar 16, 2006, 11:02 PM
"Simplify, then add lightness"
Raleigh,NC
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In a full scale aerobatic plane, the smoke comes from a smoke generator in or around the exhaust. A fluid(usually some type of light oil) is pumped into the generator, and is burned by the exhaust heat. The smoke units for electric trains are similar, a light oil is burned by a nichrome heater wire. I don't think trains usually have a pump for the fluid. I would think you would need a lot more smoke for an electric plane than you would for a train. Don't know how much power you would need for a nichrome heater.

This article describes smoke systems for fuel powered models. http://www.mdw-aviation.com/MDW_smok...m_a_primer.htm For an electric model, you would need to substitute a nichrome heater for the hot exhaust.

Here is an electric smoker for model paddle wheel boats, and it says it takes 2.5 to 3 amps at 12 volts. http://www.paddlewheels.co.uk/smoke.html
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Old Mar 16, 2006, 11:59 PM
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i already know about the engine smoke. That's simple. Just don't know how electric smoke units work.

thanks for the links. I'll take a look..

-Tomi
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Old Mar 17, 2006, 12:34 AM
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http://www.micromark.com/
Part #82602 Smoke Generator
#82603 Smoke Fluid
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Old Mar 17, 2006, 04:59 AM
Johan Beyers Eflight101
Stellenbosch, South Africa
Joined Feb 2005
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I'm not sure a train unit will generate enough smoke to be visible on a plane. You need a LOT of heat to generate enough smoke. Since the glow engines are so inefficient, their exhaust generates all the heat you need, but I guess you'll probably have to put at least 100 watts (say, 10 amps from a 3S lipo) into a smoke generator to make enough smoke to be useful.

If I look at the pictures on the paddle boat generator, it makes about the same amount of smoke as a just-blown-out candle for 25-35 watts of input.

Johan - Eflight101.com
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Old Mar 17, 2006, 02:58 PM
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I forgot to mention about what type and where the plane would be flying.

I would put it on a small foamy plane that flies at a resonable speed. Not fast, but not too slow. So the smoke trail can still be seen. Also, the place of flying would be indoor. It should make a great indoor show. I'm sure it will work pretty well indoor, but outdoors, you'd probably wouldn't even see a poof of smoke
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Old Mar 17, 2006, 05:45 PM
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Here is a list of smoke units, that we normally use in model trains. Voltages and currents are listed:
http://www.mgsharp.com/Seuthe.htm

And here is a video of one of my trains. That will give you an idea of the amount of smoke, you'll be able to get from one of these:
http://www.ejberg.dk/external/marklinusers/39103-2.mpg
The smoke unit used in this lok is a Seuthe number 10, driven at the high end of its voltage span (if I rememer correctly).
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