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04-28-2020, 02:30 PM
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Join Date: Oct 2005
Location: Lower Alabama
Posts: 41
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Smoke oil question
Is there something you can add to smoke oil to make different colors. I have a friend that is planning something for the 4th of July. He has 3 nozzles and is trying to do red,white, and blue.
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04-28-2020, 03:31 PM
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Join Date: Jul 2013
Location: US
Posts: 2,251
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Ah, the Holy Grail of smoke systems for reciprocating engines.
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04-28-2020, 05:30 PM
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Join Date: Feb 2012
Location: Leesburg, VA
Posts: 551
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Smoke
http://novaspecialties.com/colored-aerobatic-smoke/
Colored smoke in a piston looks possible, but requires an additional injector closer to exhaust exit.
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Jim
Leesburg, VA (KJYO)
RV4 N444JT (  sold)
RV8 N37PK
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04-28-2020, 08:11 PM
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Join Date: Mar 2015
Location: Stilwell, KS
Posts: 16
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Caution !!!
Their website shows the flashpoint at only 86 degrees F.
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04-28-2020, 08:43 PM
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Join Date: Jul 2013
Location: US
Posts: 2,251
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Wasn't there also some concern about this staining paint? I may be misremembering, but I think this came up before in a discussion.
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04-28-2020, 10:14 PM
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Moderator, Asst. Line Boy
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Join Date: Jan 2010
Location: Flower Mound, TX
Posts: 1,473
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Harley,
I discussed this with Marvin at www.Smoke-System-Helper.com (a VAF advertiser). He said trying to dye smoke oil for heating in the exhaust pipe just burns the oil and gives you white smoke, no matter what color it was going in. Colored smoke requires colored dye injected way downstream in the cooler part of the exhaust pipe. Rather than "burn", it stays wet and is a cooler aerosol additive to the 'burned' smoke. Naturally, this requires an additional storage tank and spray apparatus (complexity and weight).
Marvin, does that sound about right?
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Sid "Scroll" Mayeux, Col, USAF (ret)
52F NW Regional/Aero Valley Airport, Roanoke TX (home of DR's Van Cave)
"KELLI GIRL" N260KM RV-7A tipper
Catch her on YouTube's "Because I Fly!" channel
Exemption waived.
Proud and grateful 2020 -=VAF=- Contributor
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04-29-2020, 03:59 AM
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Join Date: Oct 2005
Location: Lower Alabama
Posts: 41
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Thanks for the replies everyone. I'll pass this info on.
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04-29-2020, 06:29 AM
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Join Date: Jan 2005
Location: Wappingers Falls, NY
Posts: 233
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Dr Smoke
We have a gentleman here that used to fly air shows in his SF-260. He had multiple colored smoke, controlled the various dyes with valves in the cockpit. His full time job was as an oral surgeon, show name was Dr Smoke.
He spent a lot of time experimenting with dyes Nd has never given out his formula as far as I know.
https://m.youtube.com/watch?v=fvDveutiVTE
Scott A Jordan
80331
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04-29-2020, 07:27 AM
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Join Date: Dec 2006
Location: Colorado Springs
Posts: 576
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Check the massive squadron that overflew Arrowhead Stadium a few years back. They used pink smoke. I recall something being mounted on the wingtips.
See Post 42... http://www.vansairforce.com/communit...stadium&page=5
Last edited by SeanB : 04-29-2020 at 07:30 AM.
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04-29-2020, 01:46 PM
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Join Date: Jul 2013
Location: US
Posts: 2,251
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Quote:
Originally Posted by SeanB
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That's more in the pyrotechnic regime. Not smoke oil, AFAIK.
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