Dynaflite GPMA0090 Butterfly - Manual (Page 21)

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14. Insert 4-40 blind nuts into the holes from the
back of the fi rewall, then lightly tap them all the way
in with a hammer. Apply medium CA around the
edges of the blind nuts to permanently secure them.
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15. Drill a 3/16" hole through the punch mark
in the right side of F-6 for the throttle pushrod
guide tube.
Join the Fuselage Sides
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1. Fit F-6 into the forward notch of the right
fuselage side. Use a small square or a 90-degree
triangle to hold F-6 perpendicular and use
medium CA to securely glue it in position. The
“F-6” designation must face forward.
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2. Glue F-7 to the right fuse side the same way
as F-6.
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3. Test fi t the left fuselage side to the assembly.
Position the temporarily joined fuse sides upside-
down over the top view of the fuselage plan. Make
sure the fuselage sides fully contact your fl at
building table and the formers and sides align
with the plan. Adjust the notches in the left fuse
side if necessary, then use medium CA to glue the
left side to the formers.
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4. Beginning at former F-6, pin the fuselage in
position over the top view of the plan by inserting
T-pins through the triangle fuselage reinforcement
stringers into your building board. Accurately align
the fuselage with the plan as you proceed toward
the rear. Insert all the T-pins so they are all at
the same angle, slanting forward for example, so
you will be able to remove the fuselage from your
building board after you glue the sheeting in position.
Do not insert any T-pins in front of F-6.
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5. Place a piece of wax paper under the front
of the fuselage at the fi rewall. Glue the fi rewall to
the fuse sides with 30-minute epoxy. Immediately
proceed to the next step.
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6. Before the epoxy cures, pin the front of the
fuselage to the plan the same way you did the rear
of the fuselage. The fi rewall should align with the
dashed line which represents the position of the
fi rewall on the plan
when the fuselage is upside-
down . Use masking tape to hold the fuse sides
together until the epoxy cures.
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7. Use medium or thick CA to glue a piece of
triangle stock to both corners where the fi rewall
meets the fuselage sides.