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AW: Fuel tank

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r.twellmann(at)steute.com
Guest

Posted: Thu Jan 14, 2010 1:43 am Post subject: AW: Fuel tank

When I started my 2-place project in 1994 I took a jar with  avgas and a jar with mogas and put in small pieces of laminates from the  materials supplied with the kit.

 Over the years i refilled the evaporated fuel  occasionally.

 Now after more than 15 years the samples in the avgas jar  do not show any  change or degradation. But on the bottom  of the mogas jar you can see 

 a lot of small chips and flocs and the parts look somewhat  frayed on the edges.

 This gives me the confidence that my epoxy covered tanks  work fine (only) with avgas.

  

 Ralf



   Von: owner-kis-list-server(at)matronics.com  [mailto:owner-kis-list-server(at)matronics.com] Im Auftrag von Scott  Stearns

Gesendet: Mittwoch, 13. Januar 2010 18:51

An:  kis-list(at)matronics.com

Betreff: Re: Fuel  tank

 

                   Jeffco advertises that it's impervious to avgas.  I doubt the        epoxy makers would vow to that. 

        

       When I was at Scaled they had done tests of epoxy laminates that had        been sitting in jars of 100LL for years.  The final test was at        10 years if I remember right and there was no reduction in        properties.  Of course all epoxies are not excatly the same, but it        bodes well.

        

       Ethanol in Mogas is a disatster though.

        

       Scott



--- On Wed, 1/13/10, Alfred Rosa        <76papa(at)dishmail.net> wrote:



        	  Quote: 	
		  

From:          Alfred Rosa <76papa(at)dishmail.net>

Subject: Re: Fuel          tank

To: kis-list(at)matronics.com

Date: Wednesday, January 13, 2010,          3:50 AM



         Is epoxy impervious to avgas, or is Jeffco better?           Can Jeffco be somehow applied over epoxy in sealed tanks (sloshed          maybe)?          



         Al

         



         

                  On Jan 13, 2010, at 12:13 AM, Scott Stearns wrote:

          	  Quote: 	
		                                                                       I used the Jeffco stuff in aircraft spruce.  I                  squeeged in on then painted on two coats  The factory                  airplanes just squeeged on normal epoxy.  If I did it again                  I'd probably just use the normal epoxy and really work it in                  with a squeege.  Maybe add a little flox.  The jeffco                  stuff does make the insides of the tanks look nice through the                  fuel cap.

                  

                 Scott



	




         

 	  Quote: 	
		  



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76papa(at)dishmail.net
Guest

Posted: Thu Jan 14, 2010 4:44 am Post subject: AW: Fuel tank

Ralf,



You can't ask for a better test than that.  Thanks, that puts me at ease.

Al



On Jan 14, 2010, at 4:41 AM, Twellmann, Ralf wrote:

[quote]  When I started my 2-place project in 1994 I took a jar with avgas and a jar with mogas and put in small pieces of laminates from the materials supplied with the kit.

 Over the years i refilled the evaporated fuel occasionally.

 Now after more than 15 years the samples in the avgas jar do not show any  change or degradation. But on the bottom of the mogas jar you can see 

 a lot of small chips and flocs and the parts look somewhat frayed on the edges.

 This gives me the confidence that my epoxy covered tanks work fine (only) with avgas.

  

 Ralf



   Von: owner-kis-list-server(at)matronics.com [mailto:owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com)] Im Auftrag von Scott Stearns

Gesendet: Mittwoch, 13. Januar 2010 18:51

An: kis-list(at)matronics.com (kis-list(at)matronics.com)

Betreff: Re: Fuel tank



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