Tighten the tail rotor with a grub screw
M4x5 035 locating it on the
fl
at spot of the
tail rotor shaft, apply Loctite to the screw.
Overview of the complete tailrotor
assembly.
The rudder
fi
n S870a and the elevator
fi
n S870b are attached with two clamps
H43 each and hex screws D197, large M3
washers 004 and lock nuts M3 008 onto
the tailboom.
The distances of the rear clamp to the
front of the tail rotor housing is 100mm,
the remaining clamps are then positioned
at 160, 200 and 225mm.
Place a piece of foam tape H44 under
each clamp to stop the
fi
ns rotating in
fl
ight.
After mounting adjust the rudder
fi
n to ver-
tical and the elevator
fi
n to horizontal.
