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----- Original Message -----
From: <[EMAIL PROTECTED]>
To: Coupers Tech <[EMAIL PROTECTED]>
Sent: Saturday, March 10, 2001 10:48 AM
Subject: Re: [COUPERS-TECH] Elevator Cable Tension


"The tension on the bellcrank is not at issue, it's how much
stress there is on the cable."

It is the tension on the bellcrank and everything that holds the bellcrank
in position that is important.  The cable is capable of much higher force
than the bellcrank or structure that holds it.  In fact a 5/32 cable has a
3,000 Lb +  breaking strenght.  I seriouly doubt that the aluminum
structure
that holds the bellcranks would withstand that kind of force.

The point I was trying to make was that at 175 lbs (the average of 160 -
190) on the cables, that would equal 350 lbs of force on the structure
that
holds this system in place.  I just think that 350 lbs of static force is
a
lot to be putting on the structure.  Again, I'm not an enginer but if
heavy
acft (with large heavy structures) don't use that much force to keep their
cable systems tight, it seems a little strange that the 'coupe would be
wound that tight.  Maybe, besides improper ground handling, that's where
those wrinkles on the tail cones are comming from?

With that said, I have to admidt that I have never examined the 'coupes
cable system that closely so I don't know how stout it is built.  My only
point was that the total force on the system is about 350 lbs.  Something
to
think about.



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