Pushrod Installation - GREAT PLANES Piper J-3 Cub Instruction Manual

Pushrod Installation

❏ 1. Cut 1" long slots in both sides of the fuselage for the
elevator and rudder Pushrod Tubes to exit the fuselage.
Use the measurements in the photo for locating the position
of the exits.
❏ 2. Use a 3/16" [4.8mm] drill bit to bevel the holes for
easier installation of the pushrod tubes.
❏ 3. Locate the two 36" [910mm] Outer Pushrod Guide
Tubes and scuff the outside with coarse grit sandpaper. Route
the tubes through the fuselage and into the radio
compartment. The tubes must protrude at least 1-1/2" [38mm]
from the fuse side exits.
❏ 4. Cut the pushrod tubes 1-1/2" [38mm] behind the servo
openings in the servo tray.
GP
❏ ❏ 5. Insert one of the 4-40 x 36" [910mm] Threaded End
Rods into the rudder tube in the fuselage. The pushrod
should slide easily into the tube. Screw a 4-40 nut and a 4-40
steel clevis on the pushrod and add a silicone retainer to the
clevis. The threaded rod should protrude slightly inside the
forks of the clevis.
❏ ❏ 6. Install the nylon rudder control horn in line with the
pushrod. Hold the horn in position and mark the location of
17