Guest Posted May 13, 2008 Share Posted May 13, 2008 All, I have been toying with the idea of smoke for the Tip to Tip pilots to 'disperse' at key places during the flight. I am finding out a load of stuff and thought that I would share it in case someone else is trying to do the same. OK, I have written off injecting a fuel into the exahust early in the process becasue of the effect on our carbon footprint. I then started to look into smoke canisters (as used by sky divers, the ARMY and such....) we managed a few good deployments but both found that it just 'felt' a little wrong flying along with this bomb anywhere on the motor. So.... I started looking into streamers..... until.. Yesterday when Rob (baydon) mentioned that he had built a smoke machine! and that you could buy 'liquid smoke for a few quid!' so I started looking..... I have now ordered a gallon of Liquid smoke and have sussed out that it needs to end up at close to 300 degree C before getting sprayed onto a hot metal plate to turn into harmless waterbased smoke. so how??? My idea, and I will try this as soon as everything arrives here.. A washer bottle and motor from a car (12v) 1 meter of copper brake line (as used in many smoke machines) and an 800c hot exhaust. I intend to coil the copper wire around the hottest part of the exhaust and wrap it in exhaust bandage ( to keep it hot ) and then use a nitrous oxide injector head to spray the hot liquid onto the hottest part of the exhaust (I may have to enclose this part to prevent the liquid from escaping before evaporating) The other end is connected to the above mentioned washer bottle full of liquid smoke. A simple PTS 'Push To Smoke' button on the hand grip and yippeeee were away. no holes no perm fixings. Fingers Xed I will take pictures as I do it and vid the results (good and bad) SW Quote Link to comment Share on other sites More sharing options...
helimed01 Posted May 18, 2008 Share Posted May 18, 2008 Thanks Simon for confirming to me what I did indeed have suspicions about. You are as mad as a box of frogs. Keep it up tho Whitters. Quote Link to comment Share on other sites More sharing options...
Guest Posted May 18, 2008 Share Posted May 18, 2008 LOL Hey Whitters, nice to see you around An update to this is, I have got the copper brake line, and fitted it around the exhaust. I have fitted a high temp silicone hose to the other end of the copper tube and attached a 'syringe?' full of liquid smoke. I have run up the motor to the point of being well..... hot..... and then squirted the liquid smoke through the tube and guess what!!!!!!!! ? ? ? ? ? ? ? My back garden filled with smoke!!! well, it smoked! I am on the right track I am sure of it. More Glycirine = more smoke.... SW Quote Link to comment Share on other sites More sharing options...
slim Posted May 18, 2008 Share Posted May 18, 2008 now I know what I want for Christmas! Quote Link to comment Share on other sites More sharing options...
Guest Posted May 20, 2008 Share Posted May 20, 2008 All, The Smoke kit is now done I was looking for a component and came across this (expensive) smoke kit. http://cgi.ebay.co.uk/AUTOLOC-EXHAUST-T ... 18Q2el1247 I am going to call the people and see if I can blag a discount on one, and ask the duration, and cost of the refill. It is exactly what I was trying to make in my garage but with all the little problems sorted out so assuming that the answers are good ones I will be placing an order. SW Quote Link to comment Share on other sites More sharing options...
Phil_P Posted May 20, 2008 Share Posted May 20, 2008 How about just squirting some disco smoke machine oil into your exhaust manifold? With gravity feed you'd only need a solenoid valve. Only problem I foresee with anything that uses the exhaust, is that the prop-blast will diffuse the smoke rather than giving you the concentrated stream that you probably want. Quote Link to comment Share on other sites More sharing options...
Guest Posted May 20, 2008 Share Posted May 20, 2008 It needs to be pressurised and sprayed onto a hot surface to make the smoke. SW Quote Link to comment Share on other sites More sharing options...
Phil_P Posted May 20, 2008 Share Posted May 20, 2008 Ok, small 'pop' bottle and fit a schraeder car valve to the lid as well as the output pipe. Presurise it with a foot pump before use. I have experimented in the past doing this with a 2 litre bottle and they pump up well. In this application I'm thinking of something about 250ml. Alternatively, have a look here; http://www.airsoftscotland.com/acatalog/Smokes.html Quote Link to comment Share on other sites More sharing options...
Dragonphotographic Posted May 20, 2008 Share Posted May 20, 2008 Glycerol is the by-product of bio-diesel making. If you have someone locally who converts bio diesel you would probably get as much glycerol as you want for nothing. My local guy has to pay for it to be taken away Quote Link to comment Share on other sites More sharing options...
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