Great Planes Fun One 40 - GPMA0490 - Manual (Page 26)

D 3. Roughen the unthreaded end of the aileron torque
rods (WBNT153) with 100-grt sandpaper, and file the
same end to a wedge shape.
D 1. Draw an accurate centerline along the LE of the
tapered balsa ailerons and the wing TE.
FILE END TO
WEDGE SHAPE
D 2. Make a mark 1/8" outboard of the dowel aligner
and cut the ailerons to f i t between this mark and the tip of
the wing. You should provide approximately 1/16" gap at
the outboard end of the ailerons.
IF YOU ARE INSTALLING 2 SERVOS
SKIP TO STEP 5!
D 4. Roughen the surface of the plastic bearing tubes
with 100-grt sandpaper.
D 5. Clean the torque rods and bearing tubes with
alcohol.
D 3. Lay the ailerons in place, with the torque rods
resting on top of the ailerons. Mark the torque rod
locations on the top of the ailerons (Similar to the
procedure used in step 5 on page 9).
D 6. Slide the plastic bearings toward the threaded end
of the torque rods, then use a toothpick to apply a small
amount of petroleum jelly to the ends of the plastic tubes
(to help prevent glue from getting inside and locking up
the torque rods).
D 4. Drill a 7/64" hole in the ailerons at the torque rod
locations, starting at the leading edge centerline and drilling
straight in to the proper depth (approx. 1"). (The hole is
drilled slightly oversize to allow for positioning, and to
create a hard epoxy "sleeve" around the wire). Use a 1/8"
dia. sharpened brass tube to cut a groove in the leading
edge of the aileron (Similar to step 10 on page 7).
D 7. Use 5-minutc epoxy or med/thick CA sparingly
to glue the plastic bearing lubes into the grooves in the TE
and the dowel aligner back into place. Wipe off any excess
glue and allow it to harden.
D 5. Lay the ailerons on the plan and mark the hinge
locations on the ailerons. Place the ailerons against the
wing TE and transfer the marks over to the wing.
D 6. Cut the hinge slots in the ailerons and wing TE
using an Xacto knife.
INSTALL AILERONS
NOTE: Do not glue the aileron hinges until after your
model has been covered. D 7. Sand the leading edge of the ailerons to the same
"V-shape as shown on the wing rib detail drawing.
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