Here is a link to a bit more video from last night.
http://youtu.be/gWvWDQKd-8k
It is a bit long, but I will try to summarize the details we took away from it.
1) The traction tape is preventing any slippage between the Frisbee and the outer wall.
2) As we increase the voltage to the motor, the exit velocity of the Frisbee increases until we get to around 10 vdc. At that point the exit velocity begins to slowly fall off. This, along with basic observation of the images confirms that the wheel is slipping on the disk.
3) We can comfortably shoot a Frisbee 45+ ft. at waist level. We also verified we can easily hit the top goal from the bottom of the Pyramid, and the Pyramid goal from the base of the Alliance wall.
4) A top plate will be needed at least around the wheel contact area and possibly along the wall contact area to allow inverted Frisbee's to be feed through. A single piece plate is also an option.
Even if we go with this current design, we feel we have a competitive solution. Although, we plan to try to improve on the findings in #2. Possible options include: a pneumatic wheel, over wrapping or replacing the tread with the same traction tape applied to the wall.
Feel free to watch the video when you have a few minutes. It is educational, and sometimes entertaining.