Great Planes Ultra Sport 40 ARF Red - GPMA1005 - Manual (Page 20)

Pushrods
Assemble the Pushrods
fuselage formers next to the pushrod guide tubes. Note:
The pushrod guide tubes are intentionally installed so the
tube exits the fuselage on the opposite sides of the
controlling servo. They cross inside the fuselage allowing
the pushrods to run nearly straight, from the servos to the
control horns, for maximum rigidity. Remove the control rods.
1. Locate the splined plastic tubing and cut several 1/4"
pieces. Slide at least six of these pieces onto each of the
long pushrod wires and space them approximately 2-1/2"
apart (do not glue yet). If these tubes do not slide on
easily, cut them to a shorter length. Note: While installing
the pushrods, position the plastic tube guides so they
always stay inside the pushrod guide tubes. If the guides
are not tight on the pushrods, apply a drop of thin CA- to
secure them.The guides will prevent side to side
movement of the pushrods.
Trim the Guide Tubes
Glue the Guide Tubes In Place
4. Remove a small portion of the fuselage former using
a hobby knife or round file. The guide tube should fit into
the former flush to the edge. Do not remove any more
former than necessary or it will be weakened. Use medium
CA to glue the guide tubes into place.
2. Apply masking tape to the fuselage next to the guide
tubes to protect the fuselage skin while cutting. Roughen
the end of each tube with medium sandpaper. Using 6-
minute epoxy glue the tubes in place. Trim the guide tubes
flush with the edge of the fuselage.
Mark the Fuselage Former
3. Temporarily insert the pushrods into the guide tubes.
Lay the pushrods on top of the servo horns. Mark the
Assemble and Install Pushrods
5. Thread the nylon clevises onto the pushrods 15 full
turns. Pliers may be required to hold the rod while
threading the clevis onto the rod. Use a piece of cloth to
keep from scratching the pushrod. Install the pushrods into
the guide tubes with the clevises at the elevator and
rudder. Connect the clevises to the control horns and use
the pushrods as guides to mark the control horn locations
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