Ball Shifters - Any Ideas

[dagronlund]

My robotics team is considering developing our own ball-shifting gearbox over the summer for next year's robotics season but we were wondering where we should get the ball-shifting mechanisms from (specifically the shaft with the two gears and the pin for switching which gear is engaged). We used the VexPro ball-shifters this year and we know that their ball-shifting mechanism works great, but we were wondering if there was anybody that sold ball-shifter kits so that you could attach other types of gears or even pulleys to the shaft. Any ideas or thoughts would be greatly appreciated.