34
b) Checking the rotor blade holders
To allow the four main rotor blades (1) to automatically
orient themselves at a 180° angle to each other during
À
ight, the blade retainer screws (2) reaching into the blade
retainers from below must not be tightened too
¿
rmly.
If you tilt the model helicopter 90° to the side, the ro-
tor blades must be able to fold down by themselves, as
shown in Fig. 6 above.
Warning!
Do not loosen the fastening screws too much;
if you do, the tracking of the rotor blades will no
longer correspond, and the blade tips will run at
different heights.
Caution!
Use a suitable screwdriver to tighten the
screws and make sure that you do not use too
much force. The threads or the screw material
may be damaged otherwise.
c) Checking the centrifugal weight rod
The centrifugal weight rod (1) must be easily movable, just
like the main rotor blades.
Move the centrifugal weight rod up and down by hand on
one side (see arrows in Fig. 7), and check that the ball
joints (2) can move freely.
The mechanical parts should move freely, but there must
not be any slackness in the bearing.
Figure 6
Figure 7
