Centre Of Gravity - GRAUPNER Jet Ranger Handbuch

Jet Ranger
to the mechanics only, and therefore forms a compact unit which can be installed and removed
easily; on the other hand it is well clear of any mechanical components which could radiate
electrical noise, and forms an efficient receiving plane regardless of the helicopter's orientation.

1.11 Centre of Gravity

The Centre of Gravity should be located 0 - 5 mm in front of the forward edge of the main rotor
shaft; you may need to install lead ballast to achieve this. To check the CG set the rotor blades
at right-angles to the fuselage centreline, raise the helicopter by the blade holders and tip it on
its side through 90°: if the CG is correct, the nose of the helicopter will now swing slowly
downwards.
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