Top Flite Sierra 40 Trainer Kit - Manual (Page 23)

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the wing. Use a knife to cut small notches into
the wing TE.
56. Use coarse sandpaper to roughen the
nylon tube on the bent wire aileron torque rod.
Slide the tube toward the threaded end of the
rod. Apply a small amount of petroleum jelly to
the ends of the nylon tube to prevent glue from
wicking into the bearing tube.
57. Assemble the parts as shown in the
photo. Apply a small amount of medium CA to
glue the torque rod bearing tube to the balsa
trailing edge center.
WRONG
RIGHT
58. Use medium CA to glue the trailing edge
center assemblies to the trailing edge of the
wing. Do not get glue in the bearing tube.
60. Following the instructions on page 8,
step 10 for installing the elevator joiner, transfer
the location of the aileron torque rods onto the
ailerons. Drill a 3/32" hole into each aileron to
accept a torque rod. Notch the front edge of
each aileron to accept the rest of the torque rod.
61. Draw a center line on the LE of the
ailerons and the trailing edge of the wing, use
the plans as a reference to mark the location of
the hinges. Make slots for the hinges using the
same technique as you did for the elevator and
rudder.
bar to sand the front edge of the ailerons to a "V"
shape to match the cross section on the plans.
WING CENTER SECTION SHEETING
63. Lightly write the identity (1-6) of each piece
of die-cut 1/16" balsa wing sheeting using the cut
patterns on page 4 as a reference. Remove the
individual sheets from the blanks.
64. Pieces 1, 2, and 3 form the top wing skins; 4,
5, and 6 form the bottom wing skins. Over waxed
paper, glue the 2's and 3's together to form a left and
a right top aft wing skin (as shown in the photo). Glue
the 5's and 6's together to form a left and right bottom
aft wing skin.
stock pieces to length so they fit between the
wing tip and the center pieces with about a 1/16"
gap at each end.
62. Use a razor plane (if available) and a T-
59. Trim the left and right tapered aileron