Gear set, 90 : 18 teeth

Ord.No. 830/72

For changing the gear ratio in a petrol mechanics you replace the main gear and the spur gear. This amends the rpm of the main rotor but keeps the engine speed constant.
The gear ratio matching each model in relation to its rotor disc and kind of the rotor head (2-blade or multi-blade head) is shown with the essential accessories for the model in detail.

Gear set
• 90 : 18 teeth