ORIGINAL: mimhoff
NJAIRSTRIKE --
If I am not mistaken I believe that the David Brown pushrods have a fitting for one end of the pushrod that allows for 2 wires to be inserted into it so you can create a "Y" pushrod ---------------< . Allowing you to use one rod to control both elevator surfaces. I have never tried this -- but maybe someone who has will chime in.
mimhoff is not mistaken, the Dave Brown pushrods come with the fitting to do a "Y" pushrod. I used them on my Hangar 9 Aresti 40. I will also use them in the Sig Cub I'm building.
You need to make sure that both of the wires on the elevator end are exactly the same length and that the hole in the servo arm that you put the wire into on the servo end is in the center of the fuselage so that both elevator halves move the same. When it is all hooked up, the pushrod should be on the center line of the fuselage (looking down from the top) and not running at an angle.
Also, before I glue the nylon ends into the fiberglass tube I rough up the surface with a bit of fairly coarse sandpaper to insure a good surface for the epoxy to hold on to.
Hope this helps,
Phil in MN[8D]