control cable protection question

On Mar 12, 7:33*am, "Peter Dohm" wrote:
...Going back to your original question, although I am not a mechanic, I have
normally seem this roblem addressed by the use of "fair leads" attached to
the structure...

That's the way I'd approach it as well. The sleeve thing sounds sort
of hokey, and I'm sure it'd look sort of hokey, and it has the
inspection issue against it. I take primary flight control systems
fairly seriously, and I consider pitch to be the most important of the
primaries.

My preference would be to attach fairlead thingies like these to the
structure to guide both cables where they threaten to rub:

http://www.aircraftspruce.com/catalo.../fairleads.php

I remember replacing them on gliders such as Schweizer 2-33, except
that back in the day they were some sort of dense, oil-impregnated
wood. The nylon will last longer and probably cause less cable wear.

AC43.13 para 7-149-n suggests that the cable angle change at a
fairlead be no greater than 3 degrees, and that's probably a good
guideline for a tensioned cable. Much more than that, and the fairlead
wears through rather quickly. Better to use a pulley then.

Thanks, Bob K.