Vfrpilotpb:
The masts on the Huskie are at an angle of 26-degrees to each other. Their torque is operating in two planes. The torques from the two rotors cancel each other out in the horizontal yaw plane. In the pitch plane they both work in the same direction.
The engine efflux on the Kaman intermeshing helicopters is far aft and downward (stovepipe) to compensate for the longitudinal pitch changes that accompany changes in torque. This exhaust arrangement minimized the coupling of pitch to torque.
Mind you, this reason isn't quite as clean as the other.
[ 26 July 2001: Message edited by: Dave Jackson ]