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Cabin Heater question

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Tom Jones

Joined: 12 Mar 2006
Posts: 752
Location: Ellensburg, WA

Posted: Thu Nov 15, 2007 6:05 am Post subject: Cabin Heater question

I am ready to build a heater for my Classic 4.  I have been looking through the archives and the only kitfox muffler heater pictures I found show the shroud and outlet attached to the front of the muffler.  Am I just confused when looking at the pictures?  It seems to me that the shroud would not catch any air flow to push the hot air through the scat duct in that location.



The engine is a 503 Rotax so a hot water heater is not an option.  I have also been thinking about attaching the scat duct to the hot air exit on the engine fan cowl.  I would have to do some butchering to the fan cowling though, so am leaning toward the exhaust system.

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_________________
Tom Jones
Classic IV
503 Rotax, 72 inch Two blade Warp
Ellensburg, WA

dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Thu Nov 15, 2007 6:50 am Post subject: Re: Cabin Heater question

Tom, 



I have seen  guys  take hot air from outlet on engine  ( 503) and duct it into the cockpit.  Personally I have not done this as I would not want to alter the cooling or restrict it in anyway but the Challenger guys have had good luck  with it . 



I have made some hot air collection devices from the Muffler for both carb heat and cabin heat  with great success.  You have to be able to not only collect the heated air from the heat muff but also provide a source of air for  ram pressure PLUS the real important part is to slow the air down  so that you get heated air and not just cool air blowing in.   



Mine  on my Kitfox IV  582  works well,  on a day with OAT   15F   the cabin will get to about 60 F .  on a 35F day I can see temps inside of 75F plus.  



It goes with out saying that when you collect heated air from an exhaust source that there is a potential for carbon monoxide so make sure you have a detector in place.



Remind me  if i forget to get you a picture but it might be in the archive here already.    I will be making a new one soon to go on the tuned pipes I have been making for the last few months.  Should not be an issue to get the same results that I got with the stock rotax muffllers.

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johnmay

Joined: 10 Nov 2006
Posts: 5
Location: Kalamazoo, Mi.

Posted: Thu Nov 15, 2007 9:02 am Post subject: Cabin Heater question

Let the pot scrubber discussion begin.

DO NOT ARCHIVE



--

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dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Thu Nov 15, 2007 9:55 am Post subject: Re: Cabin Heater question

 	  Quote: 	
		  Let the pot scrubber discussion begin. 	


They work on the ones i built  VERY  WELL  !!

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Lynn Matteson

Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

Posted: Thu Nov 15, 2007 10:14 am Post subject: Cabin Heater question

You took the words right out of my fingertips, John!



Lynn Matteson

Grass Lake, Michigan

Kitfox IV Speedster  w/Jabiru 2200

flying w/420+ hrs

do not archive

On Nov 15, 2007, at 12:01 PM, John May wrote:



 	  Quote: 	
		   



 Let the pot scrubber discussion begin.

 DO NOT ARCHIVE


	


 	  Quote: 	
		   



 Tom,



 I have seen  guys  take hot air from outlet on engine  ( 503) and  

 duct it into the cockpit.  Personally I have not done this as I  

 would not want to alter the cooling or restrict it in anyway but  

 the Challenger guys have had good luck  with it .



 I have made some hot air collection devices from the Muffler for  

 both carb heat and cabin heat  with great success.  You have to be  

 able to not only collect the heated air from the heat muff but also  

 provide a source of air for  ram pressure PLUS the real important  

 part is to slow the air down  so that you get heated air and not  

 just cool air blowing in.



 Mine  on my Kitfox IV  582  works well,  on a day with OAT   15F    

 the cabin will get to about 60 F .  on a 35F day I can see temps  

 inside of 75F plus



 It goes with out saying that when you collect heated air from an  

 exhaust source that there is a potential for carbon monoxide so  

 make sure you have a detector in place.



 Remind me  if i forget to get you a picture but it might be in the  

 archive here already.    I will be making a new one soon to go on  

 the tuned pipes I have been making for the last few months.  Should  

 not be an issue to get the same results that I got with the stock  

 rotax muffllers.



 --------

 Rotax Dealer, Ontario Canada

 Flying Videos and Kitfox Info

 http://www.cfisher.com/





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=146194#146194

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Lynn
Kitfox IV-Jabiru 2200
N369LM

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Thu Nov 15, 2007 1:57 pm Post subject: Cabin Heater question

I have seen heater hoses connected to the shroud on 503.  A fitting was made

to cover the exhaust of the shroud and divert some of the hot air into the

plane ( a QCU Challenger... sorry)  system was effective, simple and

light... Just keep an eye on your CHT.



Noel



[quote] --

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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

Tom Jones

Joined: 12 Mar 2006
Posts: 752
Location: Ellensburg, WA

Posted: Fri Nov 16, 2007 6:07 am Post subject: Re: Cabin Heater question

Thanks for the suggestions everyone.  I think I have the idea now.  Catch some ram air with an exhaust muffler muff and add pot scrubbers as needed.

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_________________
Tom Jones
Classic IV
503 Rotax, 72 inch Two blade Warp
Ellensburg, WA

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Fri Nov 16, 2007 8:34 am Post subject: Cabin Heater question

Don't forget the COD... CO Detector!



Noel

Do no archive



[quote] --

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_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

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