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Smoke unit

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Jake Gurr20/08/2020 09:07:45
12 forum posts
2 photos

Hi all,

I am looking for a UK supplier of a smoke unit, 12v ideally.

Does anyone know who may stock one?

Thanks!

Jake

Roger Clark20/08/2020 11:33:53
avatar
257 forum posts
91 photos

Try **LINK**, not used them myself

Regards

Roger

Ian Gardner21/08/2020 11:08:45
566 forum posts
1 photos

Hello Jake,

I have used the mist unit from Model Boat Bits and am very pleased with it. It operates on 12v and seems very effective. They do take up a fair bit of room in the boat. Mine was slightly different from the one in the link above, it was a vertical boilered affair. I have just received the one described above to install in another boat. I think they are basically the same, certainly look like the same electrics.

I have attempted to post a link to a You Tube video of my boat with it in so you can see what they look like.

https://youtu.be/sXXQajlhjnc
Ian

Jake Gurr23/08/2020 15:33:19
12 forum posts
2 photos

Thanks for the replies and that YouTube video is very helpful.

I was slightly concerned that the steam wouldn't look authentic enough for a diesel tug but looking at the video it looks pretty good to me.

I will need to check dimensions for fit etc. but I think I will go for this unit.

Many thanks!

Jake

Ian Gardner23/08/2020 15:51:46
566 forum posts
1 photos

I didn't realise you were after something for a diesel tug and this may be a bit OTT for that. It is possible to turn the output down - I had it quite high for the video. The unit comes with a pot which enables you to control the speed of the fan. There are other units which use a mineral based fluid which I assume would be a bit messier than these, but I have had no expereince of them. I like this because it's simple and clean.

Anyway, good luck whatever you decide.

Ian

Malcolm Frary23/08/2020 17:09:51
1043 forum posts

Everybody would like a smoke unit that gives black smoke. Nodody makes one. Given that generally the black particles that smoke comprises are usually considered carcinogens, nodody is likely to.

Peter Sykes01/02/2021 17:27:03
avatar
27 forum posts
10 photos

Black Smoke would require a lot of power as well

Richard Simpson01/02/2021 20:39:30
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1016 forum posts
256 photos

The ones that use a mineral based fluid tend to be the ones that use a heating element to heat up the fluid to the point where it gives off a vapour. I have tried a couple of these in the past and while they do make a smoke effect they tend to be quite thin in 'smoke' effect. Added to that I have a very strong aversion to heating up a quantity of 'fuel' to the point whereby it is vapourising. By the laws of physics this is usually not that much lower a temperature than the flash point so it makes me too nervous.

The water vapour type all use a nebuliser unit to vibrate the cold water into a vapour via a high frequency vibrating brass disc. They produce significant quantities of vapour so look very effective and are relatively easy to control so can be wired into the speed controller easily. Challenges with them tend to be that all available nebulisers seem to work off 24V so you either require a seperate battery or you have to step up from the existing available, which tends to usually be 12V.

The best ones I have had are now both no longer manufactured, which is a great shame. They both worked off a 12V supply and used a control circuit to step up for the nebuliser as well as control the output according to motor speed. They also both shut off after a number of seconds. Luckily the ones I have still work but when they fail it will be time to look for yet another supplier!

I have seen the results of a couple of experiments with black smoke. Invariably this means adding something to the cold water, which, by the nature of the fact it is cold, tends to fall on the model rather than rise. This inevitably deposits whatever dye has been used all over the model and makes an awful mess.

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