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Date: Mon, 18 Aug 2014 08:15:49 -0400
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From: John Cooper <snopercod@comporium.net>
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Subject: [LNC2] Rudder Cable Stretch
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After replacing my rudder cables due to a failed Nicopress crimp sleeve, 
I adjusted the length of the new cables so that with the rudder at full 
deflection (against the stops on the vertical stab), the pedal weldments 
were ~1/8" away from the hard stops up front. (Recall that the purpose 
of the hard stops at the rudder pedals is so that you will still have 
brakes if a rudder cable should fail.) During taxi testing today I 
noticed that the right rudder pedal was hitting the hard stop up front 
and I didn't have enough rudder authority to keep the plane straight 
until I reached 40 KTs. When I returned to the hangar and measured the 
rudder deflection. With the right pedal against the hard stop, rudder 
deflection was only about 25° - not even close to the required minimum 
of 30° and not even close to hitting the stop on the vertical stab. My 
cables had stretched!

So I'm going to have to remove the header tank (again) so I can shorten 
the turnbuckles I installed at the rudder pedals.

Has anyone else experienced rudder cable stretching? Will it continue or 
is this just an "infant mortality" situation? Has anyone come up with a 
way to adjust the length of the rudder cables without removing the 
header tank?

Thanks in advance--

   --John