Yaw control in a tandem rotor helo?

"Richard Riley" wrote in message
In a 2 rotor helicopter you are countering the torque of one rotor
with the other rotor. But how do you do a pedal turn?
But what do you do in a tandem, like a CH-46? Increase
the pitch, you get more torque, but you also get more lift, so the
aircraft would move forward or backward -

One rotor cone tilts left and the other tilts right.

D.