Specifications

in half and slide it over the servo connections. Shrink

the tubing by applying heat to the tubing.

❏

8. Use the string in the wing to pull the aileron

wire through the wing.

❏

9. Place the aileron servo hatch with the servo

in the wing. Be certain that the hatch is positioned

correctly as shown. Secure the hatches using six #2

x 3/8" [9.5mm] ﬂ at head sheet metal screws. Use thin

CA to harden the screw threads.

❏

10. Go back to step 1 and install the right aileron

servo following the same procedure.

MOUNT THE RETRACTS

Note: The ﬁ xed main landing gear will not be

installed until after the two wing halves have been

joined. If using the ﬁ xed main landing gear, proceed

to “Install the Flap Servos” on page 13.

Install the left retract ﬁ rst.

❏

1. Use a hex wrench to loosen the strut

mounting bolt and remove the strut. Slide two

aluminum landing gear door mounts onto the strut

and reinstall the strut in the strut mount.

❏

2. Trim the axle that is included with the Robart

retracts to 1-1/2" [38mm] long. File a ﬂ at spot at the

end of the axle. Insert the axle through the included

5" [127mm] wheel and into the retract. Apply a drop of

threadlocker to the 10-32 x 3/16" [4.8mm] set screw,

included with the retract, and tighten the set screw

onto the ﬂ at of the axle. Make sure that the wheel

rotates freely.

❏

3. Test ﬁ t the retract unit with the wheel into the

wing. Position the retract so the wheel is centered in

the wheel well. Adjust the strut position in the retract

body as necessary to achieve the correct spacing

all the way around the wheel. You may need to sand

the top of the opening in the rib slightly to allow the

retract to ﬁ t. Remove as little wood as possible.