Dude!!!
This is awesome. I played around with it just a little, and i already see the great benefits of having one. I really love how the motor snaps right in without having to loosen anything up. I'm not sure if it was meant to be that way, but it works like that What I love even more is being able to test motors without having to clip on alligator clips to the motor tabs. Now I don't have to worry about shorting out on the can.

Have you thought about taking this design and making motor stands for regular testing? I'm sure they would be a big hit due to not having to clip onto motor tabs. You can also do the same thing, as Trinity, and add a slide out tray to store rotors. They charge $14 and it is just a cradle with a slide out drawer.