Message-ID: <36B72512.274C@erols.com>
Date: Tue, 02 Feb 1999 11:17:22 -0500
From: "Jeffrey B. Chipetine" <abcrental@erols.com>
Reply-To: abcrental@erols.com
To: lancair.list@olsusa.com
CC: abcrental@erols.com
Subject: Rudder Cables..ALMOST Zero friction
Mime-Version: 1.0

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>>
Angier Ames  is correct when he states the almost amazing anti-friction
qualities that certain anti-sieze compounds can provide.  

I would suggest that builders exercise caution in the selection of
anti-sieze compounds.  Some of these compounds are scintered copper
based, others can be based on different metals, chemicals, etc.  When in
the proximity to your stainless cables, and emulsified in a conductive
oil base, certain of these compounds must be scrutinized for the
possibility of electrolytic corrosion. Other considerations are the
admittedly infintesimal amount of wear contributed by the scintered
metals in the compound.  Though I doubt they would pose more of a threat
than the wear on the outer portion of the cables than not using
anti-sieze,  the fact is the compound will be more closely in contact
with individual strands of the cable.  The cable manufacturers give a
great amount of thought to the lubes that they use when laying up a
cable assembly and it would do no harm to consult with them prior to the
application of your particular choice of anti-sieze compound. 

Of particular concern is the possibility of long term wear at the sheave
turning points.  Especially with the wonderfully sensitive controls of
the new sportplanes,  much of this wear will occur over a very limited
and quite repetitive portion of each cable at every turning point.

As regards the application of anti-sieze to the spar attach bolts,  I
know that each of you realize that the deformation and stiction between
the lands and grooves of the nut/bolt assy are responsible for the
holding force (I'm no engineer so please excuse my simple view).  Be
sure to ensure adequate holding power when using anti sieze on critical
structural assys.  

Build safely,  I envy you all.    Regards,...Jeffrey B. Chipetine