To assemble the top wing, slide the wing tube into a wing panel and then slide the carbon-fiber center rib over the wing tube.

Slide the second top wing panel on the wing tube and pull the panel into position. Thread two 4-40 bolts through the panels and into the tube to lock the components into position. A large wing tube also supports the bottom wing panels. Notice that the wing panels fit into openings in the sides of the lower fuselage.

Wing installation
Install all the interplane strut attachment brackets in the wing panels, and then slide the bottom wing tube into the fuselage. Center the tube so that equal lengths stick out on each side. Install the large blindnuts in the root ribs of each wing panel, and when the epoxy has set, secure each panel with a 1/4-20 nylon bolt.

We found it much easier to assemble the top wing first and then attach it to the model as a single piece.

To install the top wing, slide the wing tube into one wing panel, and insert the tube through the hole in the carbon-fiber center rib; then slide the other wing panel onto the tube. Install the interplane struts and set the top wing in place; then clamp the top center rib between the cabane struts.

Follow the instructions for positioning the wing panels. Support the fuselage, and use an incidence meter to set the bottom wing at zero incidence; adjust the position of the top wing until the meter reads negative 1/2 degree. Then drill through the wing-attachment holes into the top of the cabane struts and into the top center rib's mounting tabs. Bolt the center rib to the cabane with two, 8-32 socket-head bolts, washers and locknuts. To secure the top wing to the wing tube, find the holes in the wing panels, remove the covering from them, and use a no. 44 bit to drill into the tube. Thread the holes with a 4-40 tap and secure the panels with two, 1/2-inch-long 4-40 screws.

Made of flat, bent aluminum, the cabane struts are very strong. All of the attachment holes are predrilled, so the installation and alignment of the cabanes were very easy.	The tabs on the bottom of the top, center rib line up with the cabane struts. Two cap-head bolts and locknuts secure the top wing.

JR MATCHBOX The MatchBoxes that control and adjust the aileron servos are in the wing root of each wing panel. Several MatchBoxes tame the fine-tuning that's needed for the control-surface servos. Servo matching made easy Because the Ultimate uses multiple servos on each control surface, the servos must be precisely matched to minimize the drain on the flight batteries. To achieve this, five JR MatchBoxes are used on the flight controls. The four ailerons use two servos each, and one MatchBox is used for each control surface. The rudder uses four servos and a single MatchBox. To minimize the number and length of the servo leads, the aileron MatchBoxes are secured near the ailerons, and the rudder MatchBox is placed near the rudder servos. The left ailerons (top and bottom) are hooked up as follows (the right ailerons use the same process): each pair of servos plugs into a MatchBox, and then the MatchBoxes are connected to a Y-harness that is plugged into the aileron receiver port. The receiver "sees" all of this equipment as a single servo. It's now easy to adjust each servo's centering position and endpoints so they all work together.