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External Brake Lines - crack

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sean(at)stephensville.com
Guest

Posted: Thu Aug 11, 2011 2:33 pm Post subject: External Brake Lines - crack

For those using the 5052 tubing, did you use the .305 or .277 inside 

diameter?



http://www.aircraftspruce.com/catalog/mepages/alumtube_5052.php



Thanks,



-Sean #40303



On 7/11/11 11:43 AM, John Cumins wrote:

 	  Quote: 	
		   



 I believe that Vans is using poor quality tubing.  In production aircraft

 they use 5052 based alum tubing.  Vans supplies 301 based soft tubing.  So I

 have decided to not use any tubing material from Vans and order all 5052

 tubing that one can get a good flare on with out the worries of cracking

 like the 301 based tubing.



 I will use Teflon hosed with fire sleeve on all fluid hoses in the engine

 compartment.



 Just my 3 cents worth

 John Cumins

 President

 707-425-7100

 707-425-7576 Fax

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rv10rob(at)gmail.com
Guest

Posted: Thu Aug 11, 2011 4:07 pm Post subject: External Brake Lines - crack

I used the thinner walled stuff (i.e. the .305 ID or .035 wall thickness), which I think matches the thickness of the 3003 Van's ships.  Note these are the measurements for the 3/8" tubing, so I assume you're talking about fuel lines.

   

 -Rob

 On Thu, Aug 11, 2011 at 3:30 PM, Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)> wrote:

  	  Quote: 	
		  --> RV10-List message posted by: Sean Stephens <sean(at)stephensville.com (sean(at)stephensville.com)>

 

For those using the 5052 tubing, did you use the .305 or .277 inside diameter?



http://www.aircraftspruce.com/catalog/mepages/alumtube_5052.php

 

Thanks,



-Sean #40303



On 7/11/11 11:43 AM, John Cumins wrote:

  	  Quote: 	
		  -->  RV10-List message posted by: "John Cumins"<jcumins(at)jcis.net (jcumins(at)jcis.net)>

 

I believe that Vans is using poor quality tubing.  In production aircraft

they use 5052 based alum tubing.  Vans supplies 301 based soft tubing.  So I

have decided to not use any tubing material from Vans and order all 5052

 tubing that one can get a good flare on with out the worries of cracking

like the 301 based tubing.



I will use Teflon hosed with fire sleeve on all fluid hoses in the engine

compartment.



Just my 3 cents worth

 



John Cumins

President

[url=tel:707-425-7100]707-425-7100[/url]

[url=tel:707-425-7576]707-425-7576[/url] Fax

	
 ======================scription,

 www.matronics.com/Navigator?RV10-List" target="_blank">http://www.matronics.com/Navigator?RV10-List

 ======================ttp://forums.matronics.com/" target="_blank">http://forums.matronics.com

 ======================       -Matt Dralle, List Admin.

 ================================



 	


-- 

 Rob Kochman

RV-10 Flying since March 2011

 Woodinville, WA

 http://kochman.net/N819K



  [quote][b]

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rv10flyer

Joined: 25 Aug 2009
Posts: 364

Posted: Thu Aug 11, 2011 4:28 pm Post subject: Re: External Brake Lines - crack

I used .035" wall thickness on fuel and brake lines. Est what you'll need then order 2 ea extra 6' lengths of each size. Shipping is higher on the long boxes. I purcased ss/teflon flex brake line set from Bonaco.

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_________________
Wayne G.

sean(at)stephensville.com
Guest

Posted: Thu Aug 11, 2011 4:43 pm Post subject: External Brake Lines - crack

Yes, sorry.  3/8 fuel line.



Thanks for the input.



On 8/11/11 7:02 PM, Rob Kochman wrote:

 	  Quote: 	
		   I used the thinner walled stuff (i.e. the .305 ID or .035 wall 

 thickness), which I think matches the thickness of the 3003 Van's 

 ships.  Note these are the measurements for the 3/8" tubing, so I 

 assume you're talking about fuel lines.

 -Rob



 On Thu, Aug 11, 2011 at 3:30 PM, Sean Stephens <sean(at)stephensville.com 

 <mailto:sean(at)stephensville.com>> wrote:



     

     <sean(at)stephensville.com <mailto:sean(at)stephensville.com>>



     For those using the 5052 tubing, did you use the .305 or .277

     inside diameter?



     http://www.aircraftspruce.com/catalog/mepages/alumtube_5052.php



     Thanks,



     -Sean #40303



     On 7/11/11 11:43 AM, John Cumins wrote:



         

         Cumins"<jcumins(at)jcis.net <mailto:jcumins(at)jcis.net>>



         I believe that Vans is using poor quality tubing.  In

         production aircraft

         they use 5052 based alum tubing.  Vans supplies 301 based soft

         tubing.  So I

         have decided to not use any tubing material from Vans and

         order all 5052

         tubing that one can get a good flare on with out the worries

         of cracking

         like the 301 based tubing.



         I will use Teflon hosed with fire sleeve on all fluid hoses in

         the engine

         compartment.



         Just my 3 cents worth

         John Cumins

         President

         707-425-7100 <tel:707-425-7100>

         707-425-7576 <tel:707-425-7576> Fax



     ======================scription,

     www.matronics.com/Navigator?RV10-List"

     target="_blank">http://www.matronics.com/Navigator?RV10-List

     ======================ttp://forums.matronics.com/"

     target="_blank">http://forums.matronics.com

     ======================       -Matt Dralle, List Admin.

     ================================

 -- 

 Rob Kochman

 RV-10 Flying since March 2011

 Woodinville, WA

 http://kochman.net/N819K



 *

 *

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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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jcumins(at)jcis.net
Guest

Posted: Thu Aug 11, 2011 5:08 pm Post subject: External Brake Lines - crack

I will be doing the same.  Due to the massive flexing of the gear lag I

think the Flix lines will last much better than any hard line will.  And the

Flex of the gear legs will never become an issue at all.



But I will do all hard lines as per plans just with 5052 lines not 3003

lines.  Probably Branco flex lines on the brake systems where needed to.

Those plastic lines shoe not be allowed on the plane at all.



John Cumins

40864 Wing skin deburring



--

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AV8ORJWC

Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"

Posted: Fri Aug 12, 2011 6:38 am Post subject: External Brake Lines - crack

Work hardened aluminum tubing increases the chance for cracks and loss of H-5606 in proximity to hot brake calipers and rotors.  The Flex line at that connection helps to improve safety.

  

 On a recent rebuilt "after incident" on an RV-12 we made just that mod.  No regrets.  Aircraft is back better than ever. The skill of easily learning proper elbow bending of 5052 is no different than 3003.  The 3003 is cheaper and easier to ship.  If that is your priority, then you can understand the selection choice.

  

 Countless stories of the nylaflow lines make them a less than appropriate alternative....IMHO.

  



  John Cox

 40600



 

  From: owner-rv10-list-server(at)matronics.com on behalf of John Cumins

Sent: Thu 8/11/2011 5:57 PM

To: rv10-list(at)matronics.com

Subject: RE: Re: External Brake Lines - crack

  

--> RV10-List message posted by: "John Cumins" <jcumins(at)jcis.net>



I will be doing the same.  Due to the massive flexing of the gear lag I

think the Flix lines will last much better than any hard line will.  And the

Flex of the gear legs will never become an issue at all.



But I will do all hard lines as per plans just with 5052 lines not 3003

lines.  Probably Branco flex lines on the brake systems where needed to.

Those plastic lines shoe not be allowed on the plane at all.



John Cumins

40864 Wing skin deburring



--

- The Matronics RV10-List Email Forum -

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:

http://www.matronics.com/Navigator?RV10-List

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