Fuselage: Build two fuselage sides from
³⁄₃₂-inch square balsa. Inlay ³⁄₃₂-inch sheet balsa at the nose and at the rubber motor’s rear mounting point. Glue in a ³⁄₃₂ × ¹⁄₄-inch balsa strip as a brace for the wing strut’s fuselage connector. When the sides are complete, score and
crack the longerons to create the tapers, front and back, then turn the sides upside down to pin them to the top view of the plan. Place carpenters’ or machinists’ squares along the outside edge of the top view to hold the sides vertical while you add the ³⁄₃₂-inch square crosspieces. Join the tailposts at their full thickness; do not sand the inner surfaces to make a narrow tailpost. Make a ³⁄₃₂-inch wide slot for the front of
The tail wheel is simplified by placing a disk of sheet balsa inside a loop in the wire and painting it flat black. The airplane’s serial number is applied from a sheet of decal letters.
four lengths of aluminum tubing into the holes, keeping the outer ends flush with the surface of the balsa. Carefully slide the wires of one wing section into the tubing. Block up the wing tip two inches. Install the second wing section in the same manner. Tack glue the aluminum tubing in place against the sheet balsa crosspieces. When dry, remove the wing panels, sew the tubing to the balsa, then glue the tubing firmly. Be careful not to get glue inside the tubing. Stabilizer and rudder: Pin down the stabilizer’s leading edge, main spar and trailing edge. Cut two tip ribs from ³⁄₃₂-inch sheet balsa and six others from ¹⁄₃₂-inch sheet balsa. Make three partial ribs from ³⁄₃₂-inch sheet balsa: one from the top front spar to the trailing edge and two from the top center spar to the leading edge. Glue the ribs in position. Add the three
¹⁄₁₆-inch square balsa spars and the ³⁄₃₂-inch sheet balsa counterbalances. Put ³⁄₃₂-inch sheet balsa gussets at the trailing edge as
shown on the plan. When the glue has dried thoroughly, remove the stabilizer from the building board and sand the leading edge and the trailing edge round. Pin down the ³⁄₃₂-inch square balsa of the rudder’s structure, then add the ³⁄₃₂-inch sheet balsa counterbalance and bottom parts. Note that a very small part of the rud- der will be glued into the stabilizer and the rounded extension at the front will set freely into a slot in the top of the fuselage. Before rounding the edges of the rudder,
drill two small holes in the trailing edge to accept the .032 wires of the unusual project- ing tab. Cut the wires to length and glue them to the trim tab made from ¹⁄₃₂-inch sheet balsa. Cap the wire balsa joints with glued strips of Tyvek® to keep them secure. Slide the wires into the rudder and glue them to the ³⁄₃₂-inch square structure. Cut lengths of ¹⁄₃₂ × ³⁄₃₂-inch balsa to glue on top of the wire inside the rudder. Sand all of the outer edges round.
the rudder by gluing two ³⁄₃₂-inch balsa strips at the top rear of the fuselage, paral- lel to the center line. For the tail wheel mount, glue hard ¹⁄₁₆-inch sheet balsa be- tween the uprights and crosspieces at the tail wheel location. Put ³⁄₃₂-inch sheet balsa gussets where indicated on the plan. Cut a strip of ³⁄₃₂-inch sheet balsa to fit be-
tween the longerons for the button timer mount if you are going to use a dethermal- izer. Screw the timer to the balsa, then glue the mount into the fuselage. Do not press on the timer’s actuating arm until the fuselage is covered and painted. Slip the wing mounting assembly into the fuselage and glue it in place. Glue former B, made of ¹⁄₁₆-inch sheet balsa, on the center line of the fuselage from the nose to the back of the cockpit area. Rather than make tiny formers, glue soft ¹⁄₁₆-inch sheet balsa to each side of former B at the first four cross- pieces, then sand them to a triangular shape. Make two former Cs from ¹⁄₈-inch sheet
balsa and glue them to the bottom of the nose section. Align the front of the formers on the corners of the nose framework and keep them parallel to the center line. Glue soft ¹⁄₈-inch sheet balsa between the formers at the second crosspiece, then inset ¹⁄₃₂-inch sheet balsa between the formers as the base for mounting the radiator.
The blue, white, and red stripes on the rudder are Japanese tissue. The remainder of the model is painted olive drab. The .032 wires are supporting the trailing tab and are glued inside the rudder (at left). The appearance of the radiator below the nose (above) is improved by the addition of flat black paint and plastic screening material. The joint in the long exhaust is strengthened with a carved angle of balsa.
FLYING MODELS 43
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