Dynaflite GPMA0570 Bird of Time - Manual (Page 12)

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7. Remove the pins from the fin. With the fin flat
on the building board, sand it flat. Fit the 1/16" fin
skin on the fin, being careful to align it with the
trailing edge and bottom of the fin. Glue the fin side
to the fin with thick CA or aliphatic resin. When the
glue is dry turn the fin over and glue the 1/8"
die-cut dorsal fin to the forward part of the fin skin.
Align the dorsal fin with the skin along the bottom
edge and at the leading edge. Laminate the second
1/8" dorsal fin to the front with thick CA.
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8. Measure and mark the location of the 1/8"
hole in the hardwood insert from the plan. Don’t
worry if it isn’t exactly in the center. It is extremely
important this hole be square with the insert so we
highly
recommend that you use a drill press to drill
the hole. Stabilizers look so much better when they
are square to the rest of the airplane and they
probably fly better too (I wouldn’t know). Carpenters
have a saying that is useful at this time - “measure
twice, cut once!”
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9. Align the second fin skin with the fin assembly
and drill a 1/8" hole in it. This skin will be glued in
place at a later time.
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10. Cut the slots for the hinges in the fin trailing
edge at the locations shown on the plan. See the
enclosed sheet “TIPS FOR USING CA HINGES.”
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11. Set the fin aside for now. It will be completed
after the fuselage is built.
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12. Cut the rudder leading edge from 3/8" x
1/2" balsa and pin it to the building board.
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13. Build R1 by laminating the three 1/8" balsa
die-cut pieces with thick CA. In a similar fashion,
build R2 and R3. Pin R1 into position and glue it to
the leading edge with CA. Glue R2 and then R3 into
position as well.
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14. Cut and fit the ribs from 1/4" x 3/8" balsa.
Again, move them up or down slightly as required to
get a good fit.
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15. Cut and fit the upper and lower corner
gussets from 3/8" x 1/2" balsa. Glue them with CA.
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16. Remove the rudder from the building board
and cut a slot for the Ply rudder horn in the lower
gusset in the location shown on the plan. Do not glue
it in until after the rudder is sanded and covered.
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17. Cut the slots for the hinges in the rudder
leading edge at the locations shown on the plan.
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18. Do not sand the fin or rudder at this time.
BUILD THE FUSELAGE
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1. Cover the fuselage plan with wax paper.
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2. Bulkhead F1 is built by laminating the three
die-cut pieces together with aliphatic resin glue.
Before the glue dries lay one edge of the assembly
against the building board and make sure they are
even and square. F2 and F3 are built in exactly the
same way. Set the three assemblies aside until they
are dry.
NOTE: You must decide if you want to built the
fuselage for the fastest possible speed or for ease of
radio installation. If you want speed, trim the
bulkheads to the general shape shown by the dotted
lines on the plan for F1. You will have some serious
tinkering to do to get the receiver, battery pack and
servos in a space that narrow.
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3. Remove the fuselage forward and rear sides
from the 1/8" balsa die-cut sheet and lightly sand
them to remove any irregularities or fuzz. Notice the
top and bottom edges of the sides has a slight curve
on them. Put both forward sides together and check
that they are exactly the same. Lay them flat on the
building table, still together, with the bottom edge
towards you. Now flip the top piece towards you
and lay it flat on the building board with the bottom
edges of both sides touching each other. The side
closest to you will become the left side.