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Fuel sight tube material?

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Cwehner

Joined: 15 Jan 2009
Posts: 17
Location: Tulsa, OK

Posted: Tue Feb 17, 2009 9:18 pm Post subject: Fuel sight tube material?

We are in the process of installing the fuel sight tubes for our Model IV that we received in a kit in the late 90's. The tubes are made of Butyrate. While researching installation examples I found a web site building log of a guy building a Model 6 with the Butyrate tubes. He  said that after a few months auto gas had ate through the Butyrate tubes so he replaced them with Tygon. My question is...



 what is the current recommendation for tubing material? Should I use the Butyrate or something else?



link to web log about the Butyrate getting eaten by auto gas.  http://www.itsys3.com/kitfox/discover.shtml



Thanks all

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_________________
Chris Wehner
Tulsa, Oklahoma
Kitfox IV, 912, Final push for completion!

Lynn Matteson

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

Posted: Wed Feb 18, 2009 3:02 am Post subject: Fuel sight tube material?

I got mine from John McBean, and they have suffered through nearly 3  

years of use with 100LL. Can't say how they'd work with a steady diet  

of auto gas, but I ran about 10 gallons of that stuff through them  

and it didn't bother them that I could see. I believe John's tubes  

are Tygon, but not sure.



Lynn Matteson

Kitfox IV Speedster, taildragger

Jabiru 2200, #2062, 605 hrs

Sensenich 62x46

Electroair direct-fire ignition system

New skis done and flying

do not archive



On Feb 18, 2009, at 12:18 AM, Cwehner wrote:



 	  Quote: 	
		   



 We are in the process of installing the fuel sight tubes for our  

 Model IV that we received in a kit in the late 90's. The tubes are  

 made of Butyrate. While researching installation examples I found a  

 web site building log of a guy building a Model 6 with the Butyrate  

 tubes. He  said that after a few months auto gas had ate through  

 the Butyrate tubes so he replaced them with Tygon. My question is...



  what is the current recommendation for tubing material? Should I  

 use the Butyrate or something else?



 link to web log about the Butyrate getting eaten by auto gas.   

 http://www.itsys3.com/kitfox/discover.shtml



 Thanks all



 --------

 Chris Wehner

 Tulsa, Oklahoma

 Kitfox IV, 912, lots a mod's, 80% complete





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p 30799#230799

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_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM

Guy Buchanan

Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA

Posted: Wed Feb 18, 2009 4:06 am Post subject: Fuel sight tube material?

At 09:18 PM 2/17/2009, you wrote:

 	  Quote: 	
		    what is the current recommendation for tubing material? Should I 

 use the Butyrate or something else?


	


Chris,

         I use the blue "Bing alcohol resistant fuel line" available 

at Aircraft Spruce and other places. I use it with 100LL but my 912 

buddies use it with SoCal auto fuel with no problems.

Guy Buchanan

San Diego, CA

K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.

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_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too.

Cwehner

Joined: 15 Jan 2009
Posts: 17
Location: Tulsa, OK

Posted: Wed Feb 18, 2009 9:06 am Post subject: Re: Fuel sight tube material?

Thanks for the replies Lynn and Guy. Poked around through old threads and found recurring issues with the butyrate tubing. I called Kitfox this morning and am gonna go with the sight tubes from them. They use the Tygon tubing and were also aware of some leaking issues with the old Butyrate stuff with the plastic fittings.



Thanks again

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_________________
Chris Wehner
Tulsa, Oklahoma
Kitfox IV, 912, Final push for completion!

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