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The Rules

For the FAI/CIAM F3C competition class pilots must perform complex hovering and aerobatic manoeuvres with a radio controlled model helicopter. Each manoeuvre must be executed with high precision and skill in any attitude and under all weather conditions. F3C model helicopters have a weight limit of 6.5 kg, a maximum rotor disc area of 250dm2 and are powered by internal combustion engines or electric motors with a maximum battery voltage of 51 Volts. The engines/motors must be adequately silenced to meet a specified noise limit. The on-board radio control equipment, receiving signals from the competitor’s transmitter, actuates the engine throttle, main rotor lateral and longitudinal cyclic pitch, main rotor collective pitch and tail rotor pitch to guide the model helicopter through hovering and aerobatic manoeuvres.

Overview of the main rules


-F3C model helicopters have a weight limit of 6.5 kg

-Maximum rotor disc area of 250dm2

-Electric motors with a maximum battery voltage of 51 Volts

-The engines/motors must be adequately silenced to meet a specified noise limit

-The competitor’s transmitter, actuates throttle, cyclic pitch, collective pitch and tail rotor pitch

URL: http://www.fai.org/downloads/ciam/SC4_F3Helicopters_2017

A full copy of the Official rules can be found by clicking the following link.