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edgraydallas

Joined: 13 Jun 2008
Posts: 74
Location: Dallas, Tx

Posted: Tue Oct 16, 2012 3:19 pm Post subject: header tank

I have the “roto-molded” header tank supplied by Skystar in 1994.  It is some kind of plastic-polyethylene?, milky color.  Question: is this material attacked by alcohol?  Should it be treated with Kreem?  The wing tanks have been Kreemed at Skystar.  I recoated them, but not sure the header needs it.  Who knows the answer?

 

I  will have my Speedster flying next year with a Viking engine and Skyview efis.  Does anyone know of a Grove gear for sale?  Can a one piece gear be made of laid up fiberglass?

 

Ed Gray  Dallas

  [quote][b]

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lcfitt(at)sbcglobal.net
Guest

Posted: Tue Oct 16, 2012 5:04 pm Post subject: header tank

Ed,

 The header tank will not be affected by the ethanol in  fuel. The issue usually mentioned about the tanks is getting the metal  fittings to seal.  I have a persistent leak in one just enough that it  smells.

  

 There have been attempts with laid up fiberglass  gear legs.  The issues that have cropped up is delamination when highly  stressed.  

 Lowell

  

  

   From: Ed Gray (egraylaw(at)swbell.net) 

 Sent: Tuesday, October 16, 2012 4:19 PM

 To: kitfox-list(at)matronics.com (kitfox-list(at)matronics.com) 

 Subject: header tank

 



  

I have the “roto-molded” header  tank supplied by Skystar in 1994.  It is some kind of  plastic-polyethylene?, milky color.  Question: is this material attacked by  alcohol?  Should it be treated with Kreem?  The wing tanks have been  Kreemed at Skystar.  I recoated them, but not sure the header needs  it.  Who knows the answer? 

  

I  will have my Speedster  flying next year with a Viking engine and Skyview efis.  Does anyone know  of a Grove gear for sale?  Can a one piece gear be made of laid up  fiberglass? 

  

Ed Gray   Dallas

[quote]



href="http://www.matronics.com/Navigator?Kitfox-List">http://www.matronhref="http://forums.matronics.com">http://forums.matronics.com

href="http://www.matronics.com/contribution">http://www.matronics.com/c

[b]

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Lynn Matteson

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

Posted: Wed Oct 17, 2012 4:32 am Post subject: header tank

Ed-

The way I understand it, the Kreem is used for sealing up the minute  

pinholes in the fiberglas fuel tanks. Because the header tank is not  

made of the same material as  the fuel tanks are, the Kreem should  

not be needed.

I re-Kreemed my fuel tanks in 2005 (1994 version), and they are still  

going strong. My header tank is not Kreemed, and it's doing fine.



Lynn Matteson

Kitfox IV Speedster, taildragger

Jabiru 2200, #2062

Prince prop 64 x 30, P-tip

Electroair direct-fire ignition system

Rotec TBI-40 injection (sleeved to 36mm)

Status: flying with 1377 hrs... (since 3-27-2006)



On Oct 16, 2012, at 7:19 PM, Ed Gray wrote:



 	  Quote: 	
		   I have the “roto-molded” header tank supplied by Skystar in 1994.   

 It is some kind of plastic-polyethylene?, milky color.  Question:  

 is this material attacked by alcohol?  Should it be treated with  

 Kreem?  The wing tanks have been Kreemed at Skystar.  I recoated  

 them, but not sure the header needs it.  Who knows the answer?



 I  will have my Speedster flying next year with a Viking engine and  

 Skyview efis.  Does anyone know of a Grove gear for sale?  Can a  

 one piece gear be made of laid up fiberglass?



 Ed Gray  Dallas



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_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM

mikeperkins

Joined: 22 May 2007
Posts: 123

Posted: Wed Oct 17, 2012 5:18 pm Post subject: Re: header tank

Ed, 



I've used that particular tank successfully since 1994 with and without ethanol. . . . Dow 730 sealant is especially good for plastic and resin tanks where the fitting can't be tightened to the normal torque. http://www.aircraftspruce.com/catalog/cspages/dow730.php

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_________________
Mike Perkins
Havana, Illinois
Model I, 532, B gearbox, GSC prop

fox5flyer

Joined: 18 Oct 2012
Posts: 5
Location: NE Michigan

Posted: Thu Oct 18, 2012 9:52 am Post subject: Re: header tank

 	  mikeperkins wrote: 	
		  Ed, 



I've used that particular tank successfully since 1994 with and without ethanol. . . . Dow 730 sealant is especially good for plastic and resin tanks where the fitting can't be tightened to the normal torque. http://www.aircraftspruce.com/catalog/cspages/dow730.php 	




Has anyone checked the price on this product?  Phew!

Deke

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lcfitt(at)sbcglobal.net
Guest

Posted: Thu Oct 18, 2012 11:49 am Post subject: header tank

Yes, I did and at half the price of a replacement aluminum tank it is a bit 

hard to swallow.  I think others in the past have recommended Rectorseal No. 

7, and I ordered some of that this morning. We'll see.  The Dow product is a 

RTV product.  Do you think it will harden in the tube like most RTVs do.

Lowell



--------------------------------------------------

From: "fox5flyer" <fox5flyer(at)gmail.com>

Sent: Thursday, October 18, 2012 10:52 AM

To: <kitfox-list(at)matronics.com>

Subject: Re: header tank



 	  Quote: 	
		   

 mikeperkins wrote:

> Ed,

>

> I've used that particular tank successfully since 1994 with and without 

> ethanol. . . . Dow 730 sealant is especially good for plastic and resin 

> tanks where the fitting can't be tightened to the normal torque. 

> http://www.aircraftspruce.com/catalog/cspages/dow730.php

 Has anyone checked the price on this product?  Phew!

 Deke





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=385636#385636

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Pat Reilly

Joined: 06 Aug 2009
Posts: 345

Posted: Thu Oct 18, 2012 6:22 pm Post subject: header tank

Guys, After trying to seal the fittings on my plastic tank multiple times unsuccessfully, I bit the bullet and paid the $100 (incl. shipping ) from ACS for a tube of the Dow 730. It sealed the fittings 1st time, hasn't leaked since. The stuff is superb for sealing fittings in plastic tanks. That was 2 1/2 years ago. I have kept it in the refridgerator for 2 1/2 years and it is still plyable. I even sold enough to seal a couple of fittings to someone on this list for $20 after I had it for a couple of months. Good deal for both of us. I recooped some of my expense and he spent 20% of the cost of a full tube.

  

Pat Reilly

Mod 3 582 Rebuilt

Rockford, IL   

On Thu, Oct 18, 2012 at 2:48 PM, Lowell Fitt <lcfitt(at)sbcglobal.net (lcfitt(at)sbcglobal.net)> wrote:

  	  Quote: 	
		  --> Kitfox-List message posted by: "Lowell Fitt" <lcfitt(at)sbcglobal.net (lcfitt(at)sbcglobal.net)>

  

 Yes, I did and at half the price of a replacement aluminum tank it is a bit hard to swallow.  I think others in the past have recommended Rectorseal No. 7, and I ordered some of that this morning. We'll see.  The Dow product is a RTV product.  Do you think it will harden in the tube like most RTVs do.

  Lowell

 

 --------------------------------------------------

 From: "fox5flyer" <fox5flyer(at)gmail.com (fox5flyer(at)gmail.com)>

 Sent: Thursday, October 18, 2012 10:52 AM

 To: <kitfox-list(at)matronics.com (kitfox-list(at)matronics.com)>

 Subject: Re: header tank

 

  	  Quote: 	
		   --> Kitfox-List message posted by: "fox5flyer" <fox5flyer(at)gmail.com (fox5flyer(at)gmail.com)>

 

 

 mikeperkins wrote:

  	  Quote: 	
		   Ed,

 

 I've used that particular tank successfully since 1994 with and without ethanol. . . . Dow 730 sealant is especially good for plastic and resin tanks where the fitting can't be tightened to the normal torque. http://www.aircraftspruce.com/catalog/cspages/dow730.php

  	
 

 

 Has anyone checked the price on this product?  Phew!

 Deke

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=385636#385636

 

 

 

 

 

 

 

 

 

 

 	
 

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-- 

Pat Reilly

Mod 3 582 Rebuild

Rockford,IL

  [quote][b]

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fox5flyer

Joined: 18 Oct 2012
Posts: 5
Location: NE Michigan

Posted: Fri Oct 19, 2012 3:17 am Post subject: Re: header tank

 	  lcfitt(at)sbcglobal.net wrote: 	
		  Yes, I did and at half the price of a replacement aluminum tank it is a bit 

hard to swallow.  I think others in the past have recommended Rectorseal No. 

7, and I ordered some of that this morning. We'll see.  The Dow product is a 

RTV product.  Do you think it will harden in the tube like most RTVs do.

Lowell

--------------------------------------------------

From: "fox5flyer" <fox5flyer>

Sent: Thursday, October 18, 2012 10:52 AM

To: <kitfox>

Subject: Re: header tank

 	  Quote: 	

I just did a quick search.  Here is some on Ebay for half of ACS.  Other searches might bring up better prices.

Deke

http://www.ebay.com/itm/Dow-Corning-RTV-730-New-No-Box-/320984671352?pt=LH_DefaultDomain_0&hash=item4abc2d6478

 mikeperkins wrote:

> Ed,

>

> I've used that particular tank successfully since 1994 with and without 

> ethanol. . . . Dow 730 sealant is especially good for plastic and resin 

> tanks where the fitting can't be tightened to the normal torque. 

> http://www.aircraftspruce.com/catalog/cspages/dow730.php

 Has anyone checked the price on this product?  Phew!

 Deke

 Read this topic online here:

 http://forums.matronics.com/viewtopic.php?p=385636#385636

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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