Hirobo electric Chinook question
This is the Hirobo tandem rotors Chinook:
[link]https://www.youtube.com/watch?v=OFEfTGEe2xU[/link]
It seems to be electric.
Both rotors are engaged to the same gears, as it can be seen when turning at lower speeds, or I am wrong? If so, then how does the heli change heading? Does the rudder channel work on the gyro to make the heli spin?
Thanks
Robert