Camera gimbal

http://www.droidworx.com.au/shop/products/camera-mounts/64-pro-mount-miniav130

http://www.rcgroups.com/forums/showthread.php?t=1488264

http://www.quadrocopter.us/2011/08/21/first-look-cinestar-camera-gimbal/

http://forums.openpilot.org/topic/6502-camera-gimbal-design/

http://photoshipone.com/products/3xpro/

Tensioner belts http://www.econobelt.com/