.
16.
a. Two pieces of 3/16"x1-1/4"x12" tapered balsa are provided for making the
ailerons. Choose an aileron pattern, cut it from the plans, trace the outline
onto both pieces of tapered balsa, then cut the ailerons to shape.
b. Carefully block sand the top and bottom surface of each aileron equally so
that the leading edge remains 3/16" thick and the trailing edge is a constant
1/16" or less. You'll need to steepen the angle of the sanding block as you
approach the aileron tip to make the trailing edge a constant thickness. This
sounds tricky, but it won't take more than a few passes of an 80-grit sanding
block.
17.
a. Draw a hinge line centered on the leading edge of each aileron. Use a
sanding block to bevel the front of the ailerons using the hinge line as a
guide.
b. Position the ailerons on the back of the wing, leaving a 1/32" gap between
the ends of the aileron and the wingtips. Mark the locations for the torque
rods, then slot and drill the ailerons to receive the torque rod wires.
18.
Trial fit the ailerons to the torque rods.
Once they fit, temporarily tape the
ailerons in place and sand the wingtips
and ailerons in place and sand the
wingtips and ailerons as necessary to
blend smoothly together.
FUSELAGE CONSTRUCTION
Basic Fuselage Assembly
19.
a. Glue together the two die-cut 3/32" plywood F-1 pieces using Kwik-Set
epoxy or slow CA. Use a heavy weight of some kind to hold the two pieces
perfectly flat while drying.
b. Mark the vertical centerline and thrust line on the F-1 assembly using the
cross-section on the plan as a guide.
c. Determine the spacing that will be necessary between the two glass-filled
engine mounts to fit your engine, then position the mounts on F-1
accordingly. Mark the location of the four mounting holes and drill them out
with a 3/16" drill bit.
20.
Lightly hammer four 6-32 blind nuts into the back of F-1. Bolt the engine mounts to the front of F-1, using 6-32x5/8" socket-
head bolts to align the blind nuts (see note below). Apply medium or slow CA around the edges of the blind nuts to hold
them in place.
NOTE: The shank of the 6-32 blind nuts may extend too far through F-1 and interfere with the back of the engine mounts. To
avoid any interference, drill a 3/16" dia. relief partially through the back of the mounts at each hole.
21.
a. Position your engine on the
mounts so that the rear face of the
spinner backplate is between 2-
3/4" and 3" from F-1. Mark through
the engine mounting holes with a
pencil, then remove the mounts
from F-1.
b. Drill and tap the mounts for the
engine bolts (not included).