Well, if it comes with the torque rod, then I would have to assume that it's been tested with that method. I just feel that it puts a lot of stress on the one single control horn during maneuvers.

The problem with the long control rods when using the split method is that they can bend and flex if not secured properly inside of tubes. The Sullivan Goldenrod or their carbon rod comes with tubes that the rods pass freely through but the rods have to be secured either on or in the formers along the inside of the fuselage. If your plane is an ARF, then you will have to get inside to secure those rod tubes somehow.

What I did was I carefully removed the bottom covering to gain access to the inside of the fuselage. Then I drilled out holes in the formers where the two tubes would go (one on each side because you join the rods close to the servo in the wing saddle) making sure that you have the tubes going as straight as possible, one on each side, as I said, leading to the hole in the fuselage where the rods would exit to the elevator. You can also do this for putting a tube in for the rudder, by the way. Then you lay the tube along side of the formers where the holes are, mark them with a permanant marker, remove it, scruff the tubes up where the marks are (this allows epoxy to set up and bond with the tubes) then slide the tubes in the holes all the way back to the rear of the fuselage. Apply a bit of epoxy at each of the holes in the formers (returns the strength and holds the tubes in place) and let the epoxy set up.

Once set up, make your rods as I showed in my drawing or as you wish, your choice, the pass the rods through the tubes.

Now on the rear of the fuselage, where the rods exit, what I do is measure the threaded steel rod so that it is long enough to pass into the center of the Sullivan rod far enough into the rod so that the steel rod would be well inside of the fuselage. Another drawing will show what I mean. You want strength so that the rod does not flex outside of the fuselage between the tube and the horn. You want that stiff.

At the servo end, do that measurement also so that the threaded rod is far enough inside of the carbon rod (or golden rod) so that it goes to where the string is at the joint of the rods.

I'll up load a picture of what I mean shortly.

CGr.