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cut the air inlet hole. The rear of the fuselage is open to let out the hot air. Do not
install the scoop at this time.
Firewall:
Sand the front fire wall area so that the front edges are even. The proper amount of
firewall down-thrust is built-in, so don't sand too aggressively. Using a small drill bit or
piece of wire poke holes in the edge of the foam where the firewall attaches. This
really helps the bond of the firewall to the fuselage. The holes help the epoxy wick into
the foam for better strength.
The firewall is a 1¾" by 1¾" square piece of ⅛" plywood. Layout the engine mount
on the firewall and pilot drill for the mounting holes. Drill a ¼" hole to route the motor
wires through the firewall. Glue the plywood firewall to the fuselage using 5-minute
epoxy.
After the firewall epoxy has cured, lightly sand the corners of the fuselage to round
them off a bit. Don’t sand the corners if you left the clear plastic film on the foam.
Use foam safe CA or 5-minute epoxy to install the two
3
/
16
" wood dowels for the wing
hold downs. You may optionally use your own carbon fiber dowels.
Horizontal & Vertical Stabilizers:
Cut the elevator free from the horizontal stabilizer along the line drawn on the
stabilizer. Cut a 45º taper into the leading edge of the elevator. You can rough cut the
taper with a knife and then use a "T" bar or sanding block to sand the taper to a
smooth finish. Sand the trailing edges of the elevator to a taper and round over the
leading edges of the horizontal and vertical stabilizers. The leading edges of the
horizontal and vertical stabilizers may be reinforced with 3" wide clear tape if desired.
Transfer the horizontal stabilizer centerline marks to the stabilizer and remove the
plastic film covering from the area.
Attach the elevator to the horizontal stabilizer. Hinging the elevator can be done
several ways using the hinge method that you prefer. Hinge tape is an easy option. A
stronger method is to join the elevator to the horizontal stabilizer with thread, but make
sure that the gap is sealed with tape to prevent flutter!
The location of the elevator servo is
marked on both fuselage sides. If you
haven’t already done so, cut out the
servo opening to fit your servo now, but
do not install the servo at this time.
With the fuselage weighted down to the
work bench place the horizontal and
vertical stabilizers into the tail of the
