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9. Using the template method, locate the four cowl
mounting screw holes. The mounting screws must screw
into the sides of the firewall. With the cowl in position mark
and drill a 1/16" pilot hole at each mark. Enlarge the holes
in the cowl to 3/32". Use #2 washers and #2 x 3/8" sheet
metal screws to attach the cowl to the fuse.
Note: The wing struts are for scale like appearance only.
Built according to the plan and instructions, the airframe has
sufficient strength for normal aerobatic flying without the
struts. We suggest that the wing struts be removed if the
plane will be flown fast. If not, the struts may flutter at high
speeds. Before proceeding, make sure that you have the
wing seated and installed on the fuselage in its final position.
❏ ❏
1. Cut a 3/16" x 1/2" x 30" balsa stick in half to make
two wing struts.
❏ ❏
2. Taper and round the LE and TE of the wing struts to
an airfoil shape as shown on the wing plan.
❏ ❏
3. Cut three CA hinge pieces 1/4" x 1".
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4. Cut a slot 1/2" deep in one end of each wing strut. Insert
a CA hinge into each slot and glue them in place with thin CA.
Drill a 1/16" hole through the center of the protruding CA hinges.
❏ ❏
5. Glue a die-cut 1/8" plywood fuselage strut
mounting plate to the inside of the fuselage floor at the
location shown on the plan.
❏ ❏
6. Drill a 1/16" hole in the center of both left wing strut
mounting plates in the wing. Attach the struts to the strut
mounting plates with #2 x 3/8" sheet metal screws.
❏ ❏
7. Lay the wing struts so that they are positioned across
the fuselage at the fuselage strut mounting plate location.
Mark where the wing struts cross the edge of the fuselage.
Cut the wing struts off at the marks and check their fit.
Construct the Wing Struts
37