User guide

D 8. Glue the 3/8" x 1" x 7" balsa fin top to the top
edge of the fin assembly. Trim and sand the front end
of this piece to match the plan.
HINT: Using an X-acto knife, sharpen the inside of
one end of a 1/8" diameter brass tube, and use it to
cut the groove in the leading edge of the rudder.
D 9. Temporarily tape the rudder to the fin. While
holding the rudder in the neutral position, sand the
3/8" x 1" fin top to match the rudder.
D 10. Draw a centerline on the fin leading edge and
fin top, which will help you maintain symmetry while
sanding.
D 11. Using a sanding block, sand the fin leading
edge to the approximate shape as shown in the fin
cross-section on the plan. Sand the fin top to a
rounded shape.
D 12. If you are building your Ultra-Sport 1000 as a
"taildragger," check the plans and mark the location of
the tailgear on the rudder. Drill a 7/64" hole in the
rudder (the hole is drilled slightly oversize to allow for
positioning, and to create a hard epoxy "sleeve"
around the wire). Then groove the rudder leading
edge to accept the tailgear wire and the nylon
tailgear bearing.
PARTS NEEDED TO BUILD THE ELEVATORS AND
STABILIZER:
D (1) US10S14 3/8" x 2-3/4" x 5" Balsa Stab Center
D (1) US10S15 3/8" Shaped Plywood Stab "Spar"
D (2) US10S12 3/8" x 3/4" x 26-3/4" Balsa Stab TE, Elev
LE
D (1) US10S13 3/8" x 1/2" x 30" Balsa Elev TE
D (1) US10S11 1/4" x 3/8" x 4" Balsa Elev End
D (4) US10S16 1/8" x 3/8" x 30" Balsa Stab "Ribs"
D (2) US10S09 1/2" x 2" x 14-7/8" Balsa Stab LE
D (2) US10S10 1/2" x 1" x 6-1/4" Balsa Stab Tips
D (6) US10S17 1/16" x 3" x 30" Balsa Stab/Fin Sheeting
D (1)US10S21 1/32" x 1-1/4" x 11-1/2" Ply Spar
Thickener
BUILD THE ELEVATORS
D 1. Tape the stabilizer plan (side view) down to
your flat work surface, and cover with waxed paper.
D 2. In the same manner as the rudder (steps 1 - 5),
build the framework of both elevators. Cut one of the
3/8" x 3/4" x 26-3/4" balsa sticks to make the leading
edges. Use the 3/8" x 1/2" x 30" balsa stick for the
trailing edges. Cut up the 1/8" x 3/8" x 30" sticks as
needed for the "ribs" (trussing).
D 3. Carefully draw a centerline all around the edges
of the elevators (this will help to maintain symmetry
when sanding).
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