James McKenzie (MO) came up with this overhead camera slider-dolly system using our RailDolly 2X. The RailDolly 2X is a “captive rail” system so the carriage locks onto the pipe or rail that is being used. 
The huge benefit with our design vs. other pipe-slider type systems are the wheels on both the top and bottom of the carriage. This allows for uneven weight displacement while still achieving smooth camera slider movement. Many systems that are “captive” simply provide a safety measure to keep the carriage from falling off the tracks but if weight were unevenly placed on the system everything would lock-up. This overhead camera slider-dolly setup is a great example of the versatility that is inherint in all RigWheels products.
Not only is this thing smooth and secure, but it’s sturdy. I’ve got about 60 pounds of camera and counterbalance on it and the only thing that’s flexing is the 10′ rails it’s riding on.
