We worked on the twist latch system today at our meeting. The basic prototype worked way better than I ever expected. You can see the pictures below.
Twist Latch Bumper Prototype
We made a very simple mock board to act as the bumper and didn't modify the VEXpro chassis in any way (The 2013 KOP frame would need slots cut into it). I'm pretty sure this is a setup that most teams could use.
We will probably modify our 2013 robot to use this system for our last off season in November. That we can test it against other robots and make sure it can stand up to abuse.
These are the
latches I purchased for $2.45 each.