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From: <cardmarc@charter.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Brake Line Incident Photos
Date: Fri, 24 Jun 2005 15:33:18 -0400
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Ed,
Almost all certified installations have a flexible  line section at the wheel to connect from the leg al tubing to the wheel brake puck assy. Did you have that?
Marc Wiese
> 
> From: "Ed Anderson" <eanderson@carolina.rr.com>
> Date: 2005/06/24 Fri AM 10:21:43 EDT
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: Brake Line Incident Photos
> 
> Yes, John - luck and a quick acting nephew {:>).  The only answer I can come up with is that the aluminum line suffered a fatigue fracture which weakened the tube and the hydraulic pressure finally blew out the chunk.  The line has a loop to provide flexing as the caliper moves in and out - but, flexing aluminum is not know for a long life.  In all fairness, there are many RVs flying with this configuration - so the break might be attributed to my installation (stressing the line when I put the loop in it), material weakness, some damage I did not notice, etc.  Had over 300 landings before the failure.
> 
> Ed
>   ----- Original Message ----- 
>   From: John Slade 
>   To: Rotary motors in aircraft 
>   Sent: Friday, June 24, 2005 9:09 AM
>   Subject: [FlyRotary] Re: Brake Line Incident Photos
> 
> 
>   Wow, Ed!
>   You're luck the airplane wasn't consumed.
>   My question - how did that big chunk get blown out of the brake line?
>   Regards,
>   John
>     -----Original Message-----
>     From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Ed Anderson
>     Sent: Friday, June 24, 2005 8:58 AM
>     To: Rotary motors in aircraft
>     Subject: [FlyRotary] Brake Line Incident Photos
> 
> 
>     For those interested (and may not have seen them) , here are a few photos of my brake line fire incident.
> 
>       Big chunk got blown out of brake line as can be seen from Brakelines.jpg photo.  Effect of resin burning seen on wheel pant photos.  Once the line broke, the next time I depressed the brake pedal, a fireball from the wheel to over the wing resulted from spraying the hydraulic fluid over the hot brake assembly.  The flash point of the fluid is only 240F!  I am going to investigate some stuff with a bit higher flash point {:>)
> 
> 
>     Ed
> 
>     Ed Anderson
>     Rv-6A N494BW Rotary Powered
>     Matthews, NC
>     eanderson@carolina.rr.com
>