REFLECTOR: Aileron Cables(Fire-sleeving)

[Keith Hallsten]

Larry,

If you have an exhaust failure or engine fire, a LITTLE time to get it on
the ground is what you need.  The flight must be terminated post haste,
before the fire proceeds to catastrophic airframe failure.  This would be
measured in seconds, not minutes.  No consideration of continuing the flight
to an airport should be made, unless the airport is right under you.
Therefore, firesleeve on the aileron cables meets the need very nicely.

Keith Hallsten


-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Laurence Coen
Sent: Tuesday, April 10, 2007 9:55 AM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Aileron Cables(Fire-sleeving)

All,

Fire-sleeving will work on things like liquid carrying lines, (oil and 
fuel), because the liquid flow cools the line and the fire-sleeve slows the 
transfer of heat into the line.  Putting it on the aileron cables will slow 
the melt-down but not prevent it.  Using a heat shield is a better solution.

Larry Coen
N136LC


----- Original Message ----- 
From: "Keith Hallsten" <KeithHallsten at quiknet.com>
To: "'Velocity Aircraft Owners and Builders list'" <reflector at tvbf.org>
Sent: Monday, April 09, 2007 3:19 PM
Subject: Re: REFLECTOR: Aileron Cables


> About year 2000 it was determined experimentally (at the moment I forget 
> by
> who) that the original aileron push-pull cables could seize if overheated
> (by say, an exhaust leak) in flight.  [The plane was landed successfully
> with rudders alone.]
>
> This got the collective attention of the reflectorites and a bunch of us
> went in on a group buy of higher- temperature-rated push-pull cables.  At
> that time it was also emphasized by all that we should be fire-sleeving 
> the
> portion of the cables that is on the engine side of the firewall.  I 
> believe
> that Velocity subsequently began providing a higher temperature-rated
> push-pull cable for their kits, but I'm not sure about that.
>
> I don't know if anyone tested the original push-pull cables with 
> firesleeve
> in a fire or major exhaust leak (no one wanted to volunteer), so it's not
> known whether that is sufficient.  You could be that volunteer and let the
> rest of us know how it works out!
>
> Keith Hallsten
>
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> Behalf Of lawrence epstein
> Sent: Monday, April 09, 2007 4:37 PM
> To: reflector at tvbf.org
> Subject: REFLECTOR: Aileron Cables
>
> I know that years ago it was determined that the Aileron push-pull cables
> had to be fire sleeved on the engine side of the firewall. I have the
> original cables. Do these need to be replaced entirely, or can I just put
> fire sleeve over them?
>
> Larry Epstein
>
>
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