I too am having problems with flex in the cables and friction in the tubes on my 2M Chyrsalis!!!

(see DJ FAQ below). I tried the tining trick and failed after much effort. The tining turned out well and added stifness at cable exits, but there was still flex on the elevator and the rudder just wouldn't push in at all.

From : Don Stackhouse

Did you pre-curve the wire to naturally hold the shape of the path it has to follow?

Sounds like maybe you're trying to make too much of a curve in the pushrod shape. That is the typical cause of both too much friction and too much springiness.

One other thing comes to mind. Did you try to run the pushrod for the elevator out the side of the fuselage between F5 and F6? Look closely at the diagrams in step 5. Notice that for the conventional tail version, you run the pushrod for the elevator straight out the back end, in line with the lower left holes in F5 and F6, with the yellow tube cut off a little aft of F5. It will work if you run it out the side between F5 and F6, but it's a lot trickier to get it to work smoothly.

I've attached some photos of the tail pushrods on my electric Chrysalis, the one in the box label photos.

I've also tried and dremeled out around the push rod exit at the tail to straighten the pushrod tube a bit. (I plan to refill the material with epoxy and micro balloons - unless you guys have a better idea. I may have weakened the tail too much. Maybe I should strip more covering and lay another fiberglass strip around there?)

Don Stackhouse
DJ Aerotech