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skywriting smoke

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robfras

Joined: 21 Jan 2008
Posts: 1
Location: 200 Kms west of Melbourne

Posted: Wed Jan 30, 2008 1:28 am Post subject: skywriting smoke

Has anyone had any experience making smoke [for skywriting] with a 582 rotax.

 After seeing it done with a 912  [oil straight into the exhaust after the muffler]. I tried this and no success with the 582 . Also injected oil into the exhaust system immediately after the manifold . I have been told a 2 stroke does not get hot enough but I cannot accept this and think I need to preheat the oil [a mix of parrafin and diesel]

Cheers to all,

Robert Fraser

Michel

Joined: 10 Jan 2006
Posts: 966
Location: Norway

Posted: Wed Jan 30, 2008 2:34 am Post subject: skywriting smoke

 	  Quote: 	
		   From: robfras [rob.fras(at)bigpond.com]

 Has anyone had any experience making smoke [for skywriting] with a 582 rotax.


	


Robert, I have a friend who does it often with his Rans and 582. Look here:



http://www.jfs.no/album23eng.html

http://www.jfs.no/album78.html



If you want and send me a private email, I can give you his and he can give you all the details. Let me know.



Cheers,

Michel Verheughe

Norway

Kitfox 3 - Jabiru 2200

<pre><b><font size  color="#000000" face="courier new,courier">

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Kitfox 3 - Jabiru 2200

dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Wed Jan 30, 2008 2:48 am Post subject: Re: skywriting smoke

 	  Quote: 	
		   I have been told a 2 stroke does not get hot enough but I cannot accept this and think I need to preheat the oil [a mix of parrafin and diesel] 

Cheers to all, 

Robert Fraser

	




Michel is right, most of the RANS s9 and s 10s use 2 strokes 503,582 and 670 and all use smoke.  



I have made smoke systems before and I actually got a new kit from Kevin Ridsdale at Mippi  , You can contact him here 

Email : 

ksridsdale(at)mipowerparachute.com 

Kevin did have smoke oil in stock but you can always make your own recipe of ATF and diesel and whatever you get.   The smoke oil is parafan based and works better.  One common oil is form release oil used in the concrete business.



Now I am not sure of Kevin's business right now , I did buy up alot of his inventory of King fox tires.   Contact Kevin and once I try this one out I can give a fair assessment of it .  But having done them before I think this one will work OK. 



Kevin recommended the Oil to be injected in the Elbow whereas I have done  further down the pipe. If you get too close to the exhaust ports then you could encounter  the oil sprayed being pushed back into the exhaust port and potentially into the combustion chamber.

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avidfox

Joined: 03 Apr 2007
Posts: 87

Posted: Wed Jan 30, 2008 9:43 am Post subject: Re: skywriting smoke

Michel,

  To paraphrase Crocodile Dundee,

     "That's not smoke..., This is some smoke!"  



http://avidfoxflyers.com/index.php?topic=134.0



(May not be suitable for dial-up) 



Steve

5  912UL

Michel

Joined: 10 Jan 2006
Posts: 966
Location: Norway

Posted: Wed Jan 30, 2008 12:41 pm Post subject: skywriting smoke

 	  Quote: 	
		   From: avidfox [avidfox(at)gmail.com]

 http://avidfoxflyers.com/index.php?topic=134.0


	


Nice, Steve. Do you know why one of the planes has its gear down?



Cheers,

Michel Verheughe

Norway

Kitfox 3 - Jabiru 2200

do not archive

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_________________
Kitfox 3 - Jabiru 2200

ksridsdale(at)mipowerpara
Guest

Posted: Wed Jan 30, 2008 1:48 pm Post subject: skywriting smoke

Dave,

  Yes I am still monitoring, however I do not havve accesss to the site that you are sking about.  I can tell you smoke systems and tires are what MiPPi Ultralights have hundreds of hours invested in.

  Smoke,

  Yes, if you want you could go to your kitchen cupboard and used anything if you want to make smoke, but beware!!! smoke will cause the skin on your fox to turn black and stain your plane. we do not want that to happen. To create the greatest amount of smoke you need a high concentration parafin based oil, as the parifin burns it will create somke and not strain.  The problem with a parafin based oil system is that it is not cheap ( a very good manufacturer is MDW smoke oil by the name of "Super Dri" it can be purchased in many different sizes).  The system created by MiPPi Ultralights do not require any preheater at all and the best way is to inject it directly into the exhaust the best location is the 90  degree elbow or just after befor the muffler using an injection tube to dispurst the oil in all directions.  



dave <dave(at)cfisher.com> wrote:

  [quote]--> Kitfox-List message posted by: "dave" 

 	  Quote: 	
		   I have been told a 2 stroke does not get hot enough but I cannot accept this and think I need to preheat the oil [a mix of parrafin and diesel] 

 Cheers to all, 

 Robert Fraser

 


	




Michel is right, most of the RANS s9 and s 10s use 2 strokes 503,582 and 670 and all use smoke. 



I have made smoke systems before and I actually got a new kit from Kevin Ridsdale at Mippi , You can contact him here 

Email : 

ksridsdale(at)mipowerparachute.com 

Kevin did have smoke oil in stock but you can always make your own recipe of ATF and diesel and whatever you get. The smoke oil is parafan [quote][b]

avidfox

Joined: 03 Apr 2007
Posts: 87

Posted: Wed Jan 30, 2008 4:03 pm Post subject: Re: skywriting smoke

Michel, and all interested....



The one with the gear down is a fixed gear BT-13 Vultee "Vibrator", so nicknamed because of the harmonics the prop generates at takeoff power. (P&W 985, 400 hp) It will shake windows a long ways away.

 

The rest are North American T-6's \ SNJ's (P&W 1340, 650 hp)



From a distance, they, "13's" and "6"s"  appear similar, but are actually from different mfgs.



Steve

avidfox

Joined: 03 Apr 2007
Posts: 87

Posted: Wed Jan 30, 2008 4:38 pm Post subject: skywriting smoke

The one with the gear down is a fixed gear BT-13 Vultee "Vibrator", so called because of the harmonics the prop generates at takeoff power. (P&W 985) You will shake windows a long ways away.

  

 The rest are North American T-6's \ SNJ's (P&W 1340)

 On Jan 30, 2008 2:33 PM, Michel Verheughe <michel(at)online.no (michel(at)online.no)> wrote:

 [quote]> From: avidfox [avidfox(at)gmail.com (avidfox(at)gmail.com)]

 > http://avidfoxflyers.com/index.php?topic=134.0

Nice, Steve. Do you know why one of the planes has its gear down?

 

Cheers,

Michel Verheughe

Norway

Kitfox 3 - Jabiru 2200

do not archive

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    [quote][b]

JohnA

Joined: 22 Dec 2007
Posts: 26
Location: Woodland, CA

Posted: Thu Jan 31, 2008 3:46 am Post subject: skywriting smoke

A number of gyro guys have done smoke systems with 503 and 582 with no

problem.  The main trick it to meter the Corvus Oil so that you get just

enough to give good smoke and not too much so that it cools the exhaust.



I've got drawings of a good system back at home and will send them next week

when I get back.



You'll want to acquire Corvus Oil 13.  It runs about $2.00 a gallon.  It's

non-toxic and designed for use with aircraft.



John Alexander



On Wed, 30 Jan 2008 01:28:23 -0800, robfras wrote

 	  Quote: 	
		   

 

 Has anyone had any experience making smoke [for skywriting] with a 

 582 rotax. After seeing it done with a 912  [oil straight into the 

 exhaust after the muffler]. I tried this and no success with the 582 

 . Also injected oil into the exhaust system immediately after the 

 manifold . I have been told a 2 stroke does not get hot enough but I 

 cannot accept this and think I need to preheat the oil [a mix of 

 parrafin and diesel] Cheers to all, Robert Fraser

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=161305#161305

 


	




--

Beer is proof that god loves us and wants us to be happy.  - Ben Franklin

_________________
John Alexander
Woodland, CA

Michel

Joined: 10 Jan 2006
Posts: 966
Location: Norway

Posted: Fri Feb 01, 2008 2:25 pm Post subject: skywriting smoke

On Jan 31, 2008, at 1:03 AM, avidfox wrote:

 	  Quote: 	
		   The one with the gear down is a fixed gear BT-13 Vultee "Vibrator"


	


Thanks, Steve, I thought they were all the same planes.



Cheers,

Michel Verheughe

Norway

Kitfox 3 - Jabiru 2200

Do not archive

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Kitfox 3 - Jabiru 2200

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