Install The Landing Gear - GREAT PLANES Extra 300S ARF Instruction Manual

17. Use the same procedure described on steps 11, 12,
and 13 of the elevator pushrod setup to make the rudder
pushrods except that the rudder pushrods need to be 6-1/2"
[165mm] long when cut and 8-1/2" [216mm] after they are
assembled and ready to be installed onto the servo arm.
Remember to install the hex nuts and clevis retainers. Make
two pushrods.
18. Repeat the same procedure described for the
installation of the elevator control horns to install the rudder
control horns. Remember that there is a rudder servo on
each side of the fuselage and so two control horns (one on
each side of the rudder) need to be installed. Make sure that
you install them on the plywood plates located at the bottom
of the rudder for that purpose. Use the remaining two control
horns and eight #4 x 5/8" [16mm] sheet metal screws for
this step. Also, remember to slip two silicone retainers on
each pushrod and to tighten the hex nuts against the
threaded clevises. Wick thin CA in the control horn screw
holes and servo screw holes.

Install the Landing Gear

1. Make a mark at the center of the bottom of the fuselage
2-3/4" [70mm] away from the end of the fuselage. Drill a
7/64" [2.8mm] hole 1" [25mm] deep at the mark. Wick thin
CA into this hole.
2. Insert the tail wheel wire into the hole. Find two "U"
shaped nylon straps and place them over the wire as
shown. Mark the location for the landing gear straps' holes.
Remove the straps and the landing gear.
3. Use a 1/16" [1.6mm] drill bit to drill 1/2" [13mm] deep
pilot holes for the nylon strap screws. Wick thin CA into the
4 holes. Install the tail wheel in place using four #4 x 5/8"
[16mm] screws.
4. Bend and cut a 4-40 x 12" [305mm] threaded one end
pushrod as indicated in the photo above and using the tail
wheel pushrod pattern shown on page 39. Install a hex nut
and a threaded clevis on one end and solder an unthreaded
clevis on the other end. Install the threaded clevis on the tail
wheel horn.
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