GRAUPNER Heim Eurocopter Bo 105 CBS Mode D'emploi page 56

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Bo 105 CBS
1.6 Tail rotor
1.6.1 Installing the tail rotor
The opening for the tail rotor gearbox is already machined to shape, and only needs to be
cleaned up with fine abrasive paper. Fit the tail rotor assembly and position it accurately; it is
permissible for it to be rotated slightly anti-clockwise as seen from above and the rear. Drill the
three 1.5 mm Ø holes for the retaining screws, and temporarily fit the three 2.9 x 13 mm self-
tapping screws to hold the tail rotor assembly in place.
1.6.2 Tail rotor drive system
Drill the four 2 mm Ø holes at the tail end of the fuselage for the angle gearbox retaining screws,
and also the two holes for the bellcrank.
The fuselage shell features moulded-in marks which can be used as a starting point, but please
be sure to check the hole positions using the dimensions stated in the drawing.
1.6.2.1 Preparing the angle gearbox (not included in the basic kit)
Fit a ballrace 4607.137 on each of the bevel gear shafts 4619.21 and slide the bearings along
as far as they will go. Apply pressure to the inner ring of the bearing only!
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