4′ Timing belt
Belt Clamp x2
Dayton 8.75 RPM Gear Motor: $55 Shipped
MX2 Controller With Camera Cable
Aluratek Universal 12V / 1.5A Li-ion Rechargeable Battery Pack
The top plate is a rectangular piece of aluminum with a hole cut out to mount the ball head, and the platform that the rail is bolted to is a saw horse from home depot that I cut the top off of. The two idler bearings are just skateboard wheel bearings that are spaced out with washers. The end pieces are square tubing.
Greg website is http://www.cinema-works.com/