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Brake line tubing flaring

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dan(at)rdan.com
Guest

Posted: Sat Nov 29, 2008 9:50 pm Post subject: Brake line tubing flaring

I went down to the local hardware shop and bought their best flaring tool to do the aluminum brake lines, is this the correct tool? the ridges it leaves in the tubing will not let the sleeve slide up, I had to take a file and buffer to it to get them out , I tried again same results,  is there a better tool?

 and do the bending coils I saw work good?

  

 [quote][b]

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Bruce(at)glasair.org
Guest

Posted: Sat Nov 29, 2008 10:24 pm Post subject: Brake line tubing flaring

No, No, NO!  Automotive flaring tools create 45 degree flares. Aviation flareing tools create  and aviation AN hardware require 37.5 degree flares.

  

  

  

Bruce 

www.Glasair.org 

<?xml:namespace prefix = o ns =  "urn:schemas-microsoft-com:office:office" /> 

 [quote]   

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Ed Anderson

Joined: 10 Jan 2006
Posts: 475

Posted: Sun Nov 30, 2008 4:52 am Post subject: Brake line tubing flaring

Throw away or cut off any flair you have made in aluminum tubing with the “automobile” type flaring tube.  They flair the tubing at a 45 deg angle.  All aircraft flairs are 37.5 degrees and all of your aircraft AN- fluid fittings have 37 deg cones.  Your flairs simply will not seal effectively and will eventually fail.  

   

Also never take a file to smooth out the ridges on aluminum tubing; you create small stress points where the file nicks the tubing leading to stress risers and eventually failure.  

   

It does not take much abuse of aluminum tubing to cause it to fail – I had an aircraft wheel fire due to a ruptured aluminum brake line which sprayed brake fluid on the hot rotor disc which ignited.  Fortunately, a quick thinking nephew of mine found an extinguisher and put it out before serious damage occurred.   

   

Go out and buy or borrow a 37 deg aircraft flaring tube – if you belong to an EAA chapter, there are probably several members who have one and will be willing to loan it out.  

   

Ed  

     

Ed Anderson  

Rv-6A N494BW Rotary Powered  

Matthews, NC  

eanderson(at)carolina.rr.com  

http://www.andersonee.com  

http://members.cox.net/rogersda/rotary/configs.htm#N494BW  

http://www.dmack.net/mazda/index.html  

        

  

From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of dan(at)rdan.com

 Sent: Sunday, November 30, 2008 12:49 AM

 To: rv-list(at)matronics.com

 Subject: Brake line tubing flaring  

  

              

I went down to the local hardware shop and bought   their best flaring tool to do the aluminum brake lines, is this the correct   tool? the ridges it leaves in the tubing will not let the sleeve slide up, I   had to take a file and buffer to it to get them out , I tried again same   results,  is there a better tool?   

      

and do the bending coils I saw work good?   

      

    

        

   

   



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_________________
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com

chaskuss(at)yahoo.com
Guest

Posted: Sun Nov 30, 2008 7:53 am Post subject: Brake line tubing flaring

Dan,

 As others have stated, you need an aviation 37 degree flaring tool. I recommend getting the Harbor Freight clone of the Imperial Eastman tubing bender for doing you bends. I paid about $5 for mine (it was on sale at HF). See



http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=3755



Charlie Kuss

--- On Sun, 11/30/08, dan(at)rdan.com <dan(at)rdan.com> wrote:



 	  Quote: 	
		   From: dan(at)rdan.com <dan(at)rdan.com>

 Subject: Brake line tubing flaring

 To: rv-list(at)matronics.com

 Date: Sunday, November 30, 2008, 12:48 AM

 I went down to the local hardware shop and bought their best

 flaring tool to do the aluminum brake lines, is this the

 correct tool? the ridges it leaves in the tubing will not

 let the sleeve slide up, I had to take a file and buffer to

 it to get them out , I tried again same results,  is there

 a better tool?

 and do the bending coils I saw work good?

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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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robertrv607(at)yahoo.com
Guest

Posted: Sun Nov 30, 2008 8:11 am Post subject: Brake line tubing flaring

they should know better.. don't they ever read the instruction manual?

robert

--- On Sun, 11/30/08, Bruce Gray <Bruce(at)glasair.org> wrote:



[quote] From: Bruce Gray <Bruce(at)glasair.org>

 Subject: RE: Brake line tubing flaring

 To: rv-list(at)matronics.com

 Date: Sunday, November 30, 2008, 1:23 AM

 No, No, NO! Automotive flaring tools create 45 degree

 flares. Aviation

 flareing tools create and aviation AN hardware require 37.5

 degree flares.

  

  

 

 Bruce

 

  <http://www.glasair.org/> www.Glasair.org

 

  

 

 --

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dvanwinkle(at)royell.org
Guest

Posted: Sun Nov 30, 2008 7:58 pm Post subject: Brake line tubing flaring

Dan

  

 I am almost 99% certain that what they sold  you  is an automotive 45 degree flaring tool, which is the wrong one.   What you need is a 37 degree aircraft flaring tool. These are available from  Avery, Spruce, and most of the other aviation industry suppliers.

  

 Dean Van Winkle

 dvanwinkle(at)royell.org (dvanwinkle(at)royell.org)     

 Slooowbuild RV-9A

 [quote]   ---

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dan(at)rdan.com
Guest

Posted: Sun Nov 30, 2008 8:23 pm Post subject: Brake line tubing flaring

Thanks for all the replys 

 I'm just learning,  I now have the correct one on order,

 This is why I'm a paid subscriber

 Dan

--- On Sat, 11/29/08, Dean Van Winkle <dvanwinkle(at)royell.org> wrote:



 [quote]From: Dean Van Winkle <dvanwinkle(at)royell.org>

Subject: Re: Brake line tubing flaring

To: rv-list(at)matronics.com

Date: Saturday, November 29, 2008, 10:45 PM



     Dan

  

 I am almost 99% certain that what they sold you  is an automotive 45 degree flaring tool, which is the wrong one.  What you need is a 37 degree aircraft flaring tool. These are available from Avery, Spruce, and most of the other aviation industry suppliers.

  

 Dean Van Winkle

 dvanwinkle(at)royell.org (dvanwinkle(at)royell.org)    

 Slooowbuild RV-9A

 [quote] ---

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