What does having a torque tube has to do with having a driven tail? the description on the link provided says nothing about a driven tail.

Dave Wave:

To elaborate on BH's comment, with the engine and radio off, turn the rotor head in both directions. If the tail rotor follows in both directions, then you have a driven tail (regardless of torque tube or not). If it follows in just one direction then you do not have a driven tail.

Rafael