How to Set Up Pull-Pull on a Giant Scale

Remove the canopy of the airplane to expose the internal control system. Look for the servo tray that is along the bottom of the fuselage. A belt crank will be attached at the rear of the servo tray.

Align the belt crank in a horizontal or neutral position with the sides of the fuselage. Place a strip of the masking tape over the belt crank to prevent it from moving. Measure the width of the belt crank using a ruler. Make a note of this measurement.

Place a strip of masking tape on top of the canopy rail of the fuselage so they are flush with the belt crank. This is where the cables will terminate on the belt crank. Place a strip of masking tape down each side of the fuselage.

Lay a small piece of wood along the tape on the top of the canopy rail. Measure from the bottom of the wood to the top of the belt crank. This will give you the exact height of the canopy rail. Make a note of this measurement.

Measure down the masking tape on each side of the fuselage. Make a mark on the tape with the felt tip marker. This mark will be used to align the horns of the airplane rudder.

Lift the airplane up and set it upside down on the floor or on a set of padded stands. Place a strip of the masking tape along the bottom of the fuselage to connect the two side pieces of tape.

Measure and mark the width of the belt crank on the piece of tape on the bottom of the fuselage. Marks are now present for the height and width of the belt crank.

Tape one end of a chalk line onto the two marks that indicate the width of the belt crank. Cross the lines and run them to the rudder of the airplane.

Place the end of each chalk line on each side of the rudder. Mark the side of the fuselage using your felt tip marker and tape where the chalk line appears to lose contact. This is where the control cables will exit the fuselage. Remove the chalk line.

Place the chalk line on the marks at the middle of the fuselage. Pull the chalk line taught on the horn of the rudder. Make a mark on the piece of tape at the rear of the fuselage. The marks on the tape are where the cables will exit the fuselage.

Cut a small hole into the fuselage on the marks with a power drill using a composite drill bit. Attach the chalk lines to each side of the belt crank. Run the chalk line through the holes at the rear of the fuselage and attach to the horn of the rudder. Turn the belt crank and you should see the rudder begin to move.

Extend the two holes on each side of the fuselage 1/2 to 3/4 inch. Place the metal exit cover over each hole.