RCE Solutions Colco Thunderbird Concept II, User Manual

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11 Heli Trim and Pre-Flight Setup
© <2005> ... RCE
Tighten the screws that hold the blades to the rotor head, not too much, just a little, The blades
should be able to move but should not fall/slide out of position under their own weight.
If the blades are loose they do right themselves by centrifugal force but I do not like the vibration
it causes until they are aligned
Now rotate the whole rotor head assembly by turning the main gear through 360 degrees. Ensure
the fly bar paddles remain exactly level through the entire rotation.