Great Planes Sportster Bipe 40 Kit - GPMA0510 - Manual (Page 3)

5. GROOVE OUT THE ELEVATORS FOR JOINER
WIRE CLEARANCE
Cut a groove in the elevator leading edge inside of
the hole so when the joiner wire is installed it will be flush with
the leading edge of the elevator. Do both elevator halves.
6. TRIAL FIT THE JOINER WIRE
Temporarily install the elevator joiner wire into the
elevator halves. Check to make sure that this assembly is
aligned properly. Bend the joiner arms if necessary for a perfect
fit. DO NOT GLUE THE JOINER WIRE TO THE ELEVATOR
HALVESUNTILAFTERTHE PIECESARE COVERED LATER.
7. CUT HINGE SLOTS FOR THE STAB AND
ELEVATOR
Mark and cut the hinge slots for the stab and elevator
halves as you did with the fin and rudder. See the plans for
locations. Shape the leading edges of the elevator halves to a
V’.
READ THIS FIRST BEFORE YOU START BUILDING THE
WING PANELS: It is very important that you build straight wings
with no warps or twists or you will get some flying characteristics
you didn’t expect! Be very careful when you align the ribs, spars,
leading edges, trailing edges and sheeting at the various steps
below. All these parts should be in their correct positions before
you glue them in place. Hold or pin the parts in place, then
glue. Use the following instructions to help you build the wing
straight and warp free.
Remember: Anyone can build a wing. Only a careful builder
can build a straight wing.
BUILDING THE TOP WING
Startthe top wing by building two sparsfrom 1/4x
1/4x 24balsa, aleadingedge from 1/4 x1/2x 24balsaand
a trailing edge fro m1/4 x 1/4x 24balsa. Use waxedpaper
on the plan. Cut the parts, fit them together and then glue
overthe plan. The top wing is builtin one piece. You will
build the top wing upside down at first. Use epoxy when
you glue these pieces together in this step.
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