Mount The Engine - GREAT PLANES Super Sportster 90 Instruction Book

shift the wing slightly until they do. With the wing
in this position you may now check the wing inci-
dence using an "incidence meter" or by measuring
down to the flat surface from the center of the leading
and trailing edges. The measurements should be the
same (zero degrees incidence).
D 7. After making the necessary corrections to
align the wing, tack glue the dowel plate to
F-2 with a couple drops ofCA. Also make marks
at the wing trailing edge so you may easily
re-align the wing later.
D 8. Remove the wing and securely glue the
dowel plate in place by flowing thin CA into
the wing dowel holes and around the edges.
Follow up with thick CA in any gaps around
the edges.
9. Drill 5/16" holes through F-2 using the holes
in the dowel plate as a guide.
D 10. Use a pliers to grasp the ends of the wing
dowels and pull them out. Mix up a batch of
30-minute epoxy, use a long stick to work some
epoxy into the dowel holes, smear epoxy on the
dowels, then re-insert the dowels, leaving them
protrude 3/8". Wipe away all excess epoxy, then
allow the epoxy to firmly set.
D 11. Replace the wing in the saddle and re-align.
12. Holding the wing firmly in place, drill 13/
64" holes through the center of the 1/16" ply
wing bolt plates and through the 1/4" ply hold-
down blocks in the fuselage. Try to drill
straight in, perpendicular to the 1/16" ply bolt
plates.Do not allow the wing to move while
drilling!
D 13. Remove the wing and re-drill the holes in
the wing only to 1/4".
D 14. Use a 1/4-20 tap and a tap wrench to cut
threads in the ply hold-down blocks in the
fuselage. Note: To help get the tap started
straight, you may keep the wing in place dur-
ing this step.
D 15. Harden the threads in the hold-down
blocks with thin CA glue, then re-tap the
threads after the glue is completely dry.
D 16. Trial fit the wing to the fuse using the two
1/4-20 nylon bolts provided. You may cut the
bolts off to their proper length, so they protrude
about 1/4" below the hold-down blocks in the
fuselage.
D 17. Later you will apply foam wing seating
tape to the wing saddle. To allow space for this
tape, you may sand the saddle slightly in the
areas where the wing touches the saddle, to
provide a small gap.

MOUNT THE ENGINE

D la. If you are using a custom engine mount
made for your engine, you may attach the
mount to F-l at this time using the mounting
hardware supplied with your mount, or using
the 10-32 blind nuts and bolts supplied in this
kit. Skip the following steps which refer to the
hardwood mounting rails.
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