This traveler features a set of pneumatically operated brush mechanisms, operating on custom double-backpack carriers, to allow a curtain to play from either side of the stage. This is not possible with conventional traveler systems. The system includes a winch, the track, carriers, brush system, and a manual control station. The drive can also be connected to a cue-able controller, available separately. The system shown here was built around an aluminum box truss, other options are available.
Features 
          Aluminum box truss, with EEE track
          Dual backpack carriers
          Integrated brush system
          Grooved drum wire rope winch, with limits and encoder
         Variable speed, reversible pilot operated controls, with all necessary cabling and connectors
          Trouping dollies