Put the wing panels in the top bed bottom side up. Use weights to hold the panels in
place. The weights are very important to maintain alignment and wing geometry.
Hold the spray head 1 inch from the middle of the spar slot. Spray one long puddle of
3M Super 77 spray adhesive the length of the two long spar slots. Use the end of the spar
as a spatula to spread the glue evenly. A mixing (popsicle) stick can be used to direct the
excess adhesive into the spar slot. Repeat this until the entire groove is wet with adhesive.
Make sure that the side walls of the spar slot are covered. Lay the spars on a piece of
wax paper or aluminum foil and spray the spars with the adhesive. Align the spars to meet
at the center of the wing panel and push them in place. Place weights on the wing panels
to hold the correct alignment.
(See Figure 5)
Install Servos
On the table, plug the servos into the receiver, typically the right one in
slot 1 and the left in slot 2. Turn on the transmitter (TX) then plug the battery in the re-
ceiver (RX) (always turn the TX on before the RX and turn off the RX before the TX).
Use the “X” servo control arm. Cut three of the arms off of the X, using the longest if
different sizes. Attach the arm to the servo in as nearly vertical position as possible but
make sure both arms are
page 5
close to the same angle. Make sure servos move in correct
direction, forward with the stick back; right one forward, left one to rear for right stick
movement. Reverse TX controls if necessary to provide correct elevon movement. Dis-
connect battery and turn off TX. Remove servo wires from the RX.
Spray one long puddle of 3M Super 77 spray adhesive the length of the short spar slot.
Lay the spar on a piece of wax paper and spray the short cross spar with the adhesive.
Push the spar in place. The glue will reach maximum strength overnight.
(See Figure 6)
Figure 6
Weights
Figure 5
Push the spars in
place while the
glue is wet
