Catapult launcher Explanation

Can someone PLEASE explain to me how this works??? (The robot from blue alliance 7682E) VEX Nothing But Net NZ Scrimmage 3 Finals - 7682 Wingus & Dingus - 398pts combined - YouTube

4 motors and a little bit of elastics

If I remember correctly, there is quite a bit of information here.

I’ve replied to your question on the NZ Scrimmage thread. However, there was a thread started a while back by the mentor of 7682 (Wingus & Dingus) to allow for discussions and questions about their design. [link]