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Post by peterseager on Sept 11, 2011 16:51:15 GMT
We have one member who has been trying to get a proprietary smoke generator working on his 5 in gauge Class 8 diesel shunter without success. Has anyone here made exhaust smoke work effectively and how did you do it?
Peter
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Post by ettingtonliam on Sept 13, 2011 9:10:43 GMT
When I was a child, and running my Hornby DoubleO railway system, my father, who was a heavy smoker at the time, would blow cigarette smoke into the tunnel as the train passed through. Very realistic as 'Duchess of Montrose' emerged in clouds of smoke. I realise that this solution is now unacceptable for a whole raft of reasons, but it was effective!
Richard
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chiptim
Part of the e-furniture
Posts: 270
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Post by chiptim on Sept 13, 2011 18:54:16 GMT
Peter,
I've put modified smoke units in 00 gauge but nothing else.
I think one of the problems is generating black smoke. I seem to remember that most oils that can be heated to produce smoke produce light coloured smoke?
I should imagine that getting a cloud of smoke at start-up followed by a steady stream takes a significant amount of design.
Tim
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Post by peterseager on Sept 13, 2011 21:01:45 GMT
Thats the easy bit - generate a box full of "smoke" and blow it out with a computer fan at the appropriate time. The hard bit is generating satisfactory smoke. As well as getting the Class 8 going I want to fit a similar system to my Hymek.
Peter
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jackrae
Elder Statesman
Posts: 1,335
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Post by jackrae on Oct 1, 2011 20:31:00 GMT
If you google "how to make a smoke bomb" you'll get lots on useful information on the chemistry using readily available domestic products. Mind you, you might also qualify for automatic membership to a national security list of "potential undesirables"
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Post by peterseager on Oct 3, 2011 10:05:42 GMT
I'm not sure I want to try the smoke bomb suggestion for the reason quoted but its an interesting thought. You would need to find some method that can be started and stopped at will and is non toxic.
One suggestion I have been given is to look at a bee smoker. That could be promising.
Peter
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isc
Statesman
Posts: 708
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Post by isc on Oct 3, 2011 10:37:18 GMT
Maybe oil, or similar dripped on an elecric heating element (just hot enough) to make smoke without igniting it. The oil is available in hobby stores for toy locos. The element I think is a small light bulb
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marcf
Hi-poster
Posts: 170
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Post by marcf on Nov 21, 2014 8:37:52 GMT
I was going to fit one to one of my locos however had 2 people advise me not to as both had caught fire! One of which was compasd house
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Post by peterseager on Nov 22, 2014 8:14:35 GMT
That was the type fitted to the Class 08 mentioned above. It is nolonger in use.
For the Hymek I am building a unit based on ultrasonic fog generators advertised on the internet. The sailing club I belong to has a model boat section and they are using these units. Has taken a lot of development to arrive at something satisfactory for minature rail use but hopefully I'm nearly there. With the model boats the smoke drifts lazyly out of the funnel whereas a diesel pumps it out and I don't want to be adding water every 20 to 30 minutes. Both of these problems are addressed in my design.
Peter
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Post by Deleted on Dec 9, 2014 2:44:18 GMT
Have you tried actual diesel oil itself ??--------or maybe the stuff used in these "E" cigarettes ??
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Post by peterseager on Dec 10, 2014 18:20:05 GMT
We looked at units heating lamp oil. Thats the type the friend with the 08 bought but was withdrawn after one caught fire. Myself I did not fancy breathing the smoke during a turn of driving.
The ultrasonic unit is looking good. Its been a long job because Ive used PVC as the main material. Thats been quite a learning curve which has necessitated experimental lash-ups to prove what I want to do works. They teach working with plastic in schools now. I always thought it was a bit of a cop out but not any more.
The holy grail with these units is black smoke. Any sggestions?
I think they use water/steam in the "E" cigerettes.
Peter
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Post by Deleted on Dec 10, 2014 19:28:39 GMT
ground up rubber introduced into the fire will burn black !!...............Maybe a black dye ??
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Post by peterseager on Dec 21, 2014 18:56:40 GMT
Have you tried actual diesel oil itself ??--------or maybe the stuff used in these "E" cigarettes ?? I looked up E cigs in Wikipedia becuase the same suggestion was made at our club meeting on Friday. They seem to basically work like the disco fog machines and use the same basic liquid with nicotine and flavorings added. In general, E Cigs have a heating element that atomizes a liquid solution known as e-liquid. E-liquids are usually a mixture of propylene glycol, glycerin, nicotine, and flavorings. An atomizer generally consists of a small heating element responsible for vaporizing e-liquid, as well as a wicking material that draws liquid in. Along with a battery, the atomizer is the central component. A small length of resistance wire is coiled around the wicking material and then connected to the positive and negative poles of the device. When activated the resistance wire (or coil) quickly heats up thus creating a mist from the liquid. Peter |
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Post by Deleted on Dec 21, 2014 19:19:35 GMT
Have you tried actual diesel oil itself ??--------or maybe the stuff used in these "E" cigarettes ?? I looked up E cigs in Wikipedia becuase the same suggestion was made at our club meeting on Friday. They seem to basically work like the disco fog machines and use the same basic liquid with nicotine and flavorings added. In general, E Cigs have a heating element that atomizes a liquid solution known as e-liquid. E-liquids are usually a mixture of propylene glycol, glycerin, nicotine, and flavorings. An atomizer generally consists of a small heating element responsible for vaporizing e-liquid, as well as a wicking material that draws liquid in. Along with a battery, the atomizer is the central component. A small length of resistance wire is coiled around the wicking material and then connected to the positive and negative poles of the device. When activated the resistance wire (or coil) quickly heats up thus creating a mist from the liquid. Peter -----------and people suck this stuff down into their lungs ??-------- Beggars belief .. |
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Post by Deleted on Jan 2, 2015 9:39:04 GMT
Try researching theatrical and film set smoke generators .
All those wonderfully atmospheric shots of fires and smog bound London in Sherlock Holmes (eg) are mostly done with smoke generators .
There are various working principles including dry ice , combustion and chemical mixes .
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Post by Deleted on Jan 3, 2015 23:16:23 GMT
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Post by Deleted on Jan 3, 2015 23:26:37 GMT
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