Install The Vertical Fin; Install The Hinges - GREAT PLANES Easy Sport 40 Instruction Manual

Install the Vertical Fin

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1. Remove the rudder from the vertical fin. Test fit the
vertical fin in the slot in the top of the fuselage. Sand the
edges of the slot if necessary to obtain a snug fit. Draw a
line around the vertical fin where it meets the fuselage.
Position the dorsal fin on top of the fuselage against the
vertical fin. Mark its position on the fuselage. Remove the
vertical fin and dorsal fin. Cut the covering 1/16" [1.6mm]
inside the lines you drew on the vertical fin and the top of
the fuselage. Remove the covering.
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2. Mix some 30-minute epoxy and apply it to the top of
the horizontal stabilizer through the slot and on the sides of
the slot. Apply more epoxy to the vertical fin where the
covering was removed. Insert the vertical fin into the
fuselage and adjust the alignment. Check for a 90 degree
angle between the vertical fin and horizontal stabilizer
when viewed from the rear. Use masking tape to hold the
ver tical fin in this position. Recheck the alignment
frequently while the epoxy cures.
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3. After the epoxy has cured, glue the dorsal fin to the
top of the fuselage and vertical fin with 6-minute epoxy.
Note: For a better fit, you may want to cut a groove in the
dorsal fin where it meets the vertical fin.

Install the Hinges

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1. Using the sketch above, cut fifteen hinges to a size of
3/4" x 1" [19 x 25.4mm] from the CA hinge strip supplied with
this kit. Snip the corners off so they go into the slots easier.
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2. Test fit the hinges in the slots in the elevator halves
and stabilizer. If the hinges do not slide into the slots easily,
work your knife blade back and forth in the slot a few times
to provide more clearance (it is really the back edge of the
blade that does the work here in widening the slot).
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3. Drill a 3/32" [2.4mm] hole, 1/2" [12.7mm] deep in the
center of the hinge slots. Use a rotary tool with a 3/32"
[2.4mm] drill bit or a carbide cutter for the best results.
Reinsert your knife blade to clean out the slot after you drill
the holes.
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4. Insert four hinges into the slots in the stabilizer. Press
the elevators onto the hinges until the gap between the
elevators and stabilizer is about 1/32" [.8mm]. Flex the
elevators a little in one direction, but do not allow them to pull
away from the stabilizer. Apply six drops of thin CA onto each
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