[marccenter]

Oh - thanks for spotting my goof. Thanks for commenting

I mean to say (CIMSim), the Andy Mark, Product but only managed to get the CIM written down. We left all 4 CIM's in our drivetrain.

Good question on the wheels. I had read about this year's knobbed FRC wheels tearing up balls so I took the wheels we have which were inverse crowned and had them smoothed flat thinking that the judges couldn't complain about that at the competition. That leaves spacing of the wheels and compression of the ball being the major factor in tearing apart balls. Reading posts on CD I realized that 1 to 2 inches seems to be popular so I chose 2.5 inches at the major diameter of the ball. so the compression is 3 + 5.5 + 3 at the very middle, but the wheels contact further out where the dimension is more like 3+ 6 + 3 ( 1 inch on both sides compression).

BTW, the ball is nominally marked up so far with a very small number of test firings.

I talked to someone today and they said running the top rollers and bottom rollers at 10% speed difference will provide sufficient ball spin. I am eager to test that concept when I get to the high school again.

The 16 feet horizontal shooting was when the ball shooter was mounted onto the desktop as shown. When we tipped the device to 45 degrees we obviously shoot further but hit the wall where I was unable to measure true distance.

I think shooting at far distances may be difficult due to the ball being very bouncy. We are planning on dialing down the speed to "toss" the ball into the net. Experimentation is of course required.