----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
OK, I have stayed out of this cable thing. But now I have to
ask. Where do you get 350# of tension. The system is a closed loop system.
Your arm of the bellcrank should make no difference. The pull at any given
spot is what ever you set into the cables. Take a piece of paper. Draw a
circle put two arrow head at 180 degrees. Now pull them out (elongated)
Pull
them out more that build up tension. It not doubled. It is equaled. Do the
same with a rubber band. Use two pencils as your attach points. A loop
equals every time. The only thing the bellcrank is doing is travel.
Somebody please get an AN Engineering book out. Warren H
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Monday, March 12, 2001 11:05 PM
To: Coupers Tech
Subject: Re: [COUPERS-TECH] Elevator Cable Tension
----[Please read http://ercoupers.com/disclaimer.htm before following any
advice in this forum.]----
----- 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.
---------------------------------
to unsubscribe send mailto:[EMAIL PROTECTED]
____________________________________________________________
T O P I C A -- Learn More. Surf Less.
Newsletters, Tips and Discussions on Topics You Choose.
http://www.topica.com/partner/tag01
---------------------------------
to unsubscribe send mailto:[EMAIL PROTECTED]
____________________________________________________________
T O P I C A -- Learn More. Surf Less.
Newsletters, Tips and Discussions on Topics You Choose.
http://www.topica.com/partner/tag01
<<attachment: winmail.dat>>
