Work has begun on the upper wing and is progressing a bit slower than the lower wings did. In addition to the ailerons there is also the complication of internal structural rigging. I decided to use real cable for the rigging instead of the aluminum rod in the kit for scale reasons. In a previous trip to the Michaels/Hobby Lobby type craft store I stumbled across a great multistrand wire in the bead jewelry section. The brand names are Beadalon, Soft Flex and several others. Whats great about this stuff is its very flexible and its nylon coated so radio interference shouldn't be an issue. In the photo's below I've dry assembled half the wing to show the overall construction with a closeup of the aluminum torque tube aileron system. That funny looking brown piece is what the servo pushrod will attach to and has to slip over the rear spar before the ribs are glued to the wing.

I'm still working out the details for my rigging but have decided it will anchor in four places at the tips of the wing using the system shown in the photos. It works by crimping a loop in the rigging, passing it thru a hole in the spar, and anchoring it with a piece of a small paperclip on the other side. The anchor requires three small holes be drilled in each spar but stress shouldn't be an issue so close to the tips of the wings. You can also see a couple of fake turnbuckles I'm toying with.

The current idea is to pass the wire through the reinforced points in the webs of the wing ribs instead of drilling any more holes in the spars. The 4 wires will be connected together at the center of the wing with two real turnbuckles and tightened with the completed wing pinned down. Then all the points where wire touches wing will be epoxied and places where the wires cross one another will be tied with fiberglass thread and epoxied.