A crop harvesting header includes a reel rotatable about a reel axis. The reel has a reel bat supported at a spaced distance from the reel axis. The reel bat can pivot about a bat axis radially spaced from the reel axis. The reel bat has a crop collection member that extends generally away from the bat axis. The reel bat can move in a cyclical path around the reel axis during rotation of the reel. The reel bat can vary the angle of the crop collection member about the bat axis as the reel rotates about the reel axis. A sun gear is provided that may be positioned in axial alignment with the reel axis. A planetary gear system is rotatable about the sun gear. The planetary gear system interacts with the sun gear, and causes said planetary gear system to effect pivotal movement of the reel bat about its bat axis.
