Top Flite TOPA0410 - Manual (Page 46)

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❏ 6. Move the rudder torque rod through its range of
motion. Make sure it is at an elevation where it is not
binding or striking a former. Position the rudder on the fin
and mark the location on the LE of the rudder where the
rudder torque rod will be inserted.
❏ 7. Drill a 5/32" [4mm] hole into the rudder perpendicular
to the LE, at the mark for the torque rod. Make a slot in
the rudder LE large enough to clear the torque rod and
bearing tube, from the 5/32" [4mm] hole to the bottom of
the rudder.
❏ 8. Refer to the fuse plan to obtain a starting point for
shaping the 1-1/4" x 1-1/2" x 8" balsa rudder fillet block.
Shape the rudder fillet block by trial fitting it between the
rudder and the fuse. Mark the radius on the side of the
block by extending a line from the bottom of the rudder.
When the shape is close, glue the fillet block in place on
the fuse. Use the preceding photos and the plan to assist
you in obtaining the final shape of the fillet block.
❏ 9. Sand the end of the fuse flat. Glue the 1-1/4" x 2" x
2-3/4" balsa aft tip block to the end of the fuse. Carve
and sand to shape.
❏ 10. Position the elevators on the stab and mark the
torque rod locations on the elevator. Drill a 5/32" [4mm]
hole into the elevators at both marks, to accept the torque
rods. Make a slot in the LE of the elevators to clear the
torque rod and bearing tube.
❏ 11. Use leftover balsa and balsa filler to fill the gap
between the stab LE and the fuse sides. After the balsa
filler dries, sand the filler flush with the fuse sides.