Top Flite TOPA0905 - Manual (Page 18)

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5. Make a file by cutting a piece of plywood the
width of the hinge. Apply 180-grit sandpaper to the
plywood. Sand the door to make a 1/16" [1.6mm]
groove in the door at the location of each hinge.
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6. Roughen the fiberglass with sandpaper in the
area the hinges will be glued to the doors. After
sanding, clean the area with rubbing alcohol.
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7. Apply a couple of drops of lightweight oil to
the hinge pin to prevent glue from getting into the
hinge. Glue the hinges to the door.
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8. Place the door into the opening in the
fuselage. Mark the area the hinge will be glued to the
fuselage. Sand and clean the areas inside of the
fuselage where the hinges will be glued. Then, epoxy
the doors in place.
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9. Repeat steps 1-8 for the other door.
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10. Spread the doors as far open as they will go.
Clean any remaining oil in the hinge pin with rubbing
alcohol. Apply a couple of drops of thin CA into the
hinge to lock the doors open. (Note: If you have any
thoughts of installing a retractable tail wheel in the
future, do not glue the hinges. Leave them free. This
will not interfere with the tail wheel operation.
Retractable Landing Gear
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1. Cut two air lines 24" [610mm] long. Remove
the string taped at the root of the fuselage and tie it
tightly around the two air lines.
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2. Inside of the fuselage at the wheel well you
will find the other end of the string taped in place. Pull
the string into the wheel well, pulling the airlines
through the fuselage. Insert each of the lines onto
the air inlets on the landing gear.
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