Top pictures are gears with dog shifters. I don't know why the dog gears don't have hex or square holes in them, but that is a detail that may not matter.
The big question is... why post these pics together? Two thoughts:
1. The large gears are for a single stage, 2 speed shifter gearbox. The plates are for the shooter. That is ok, but it is not likely that 968 would post these pictures together if they are from different systems. These guys have more up their sleeves.
2. The gears and the plates go together to make a 2 speed, shift-on-the-fly shooter. This is to optimize acceleration. They can start their flywheel in low gear, get up to a good rpm and then shift to high gear. With this shifter, they will be spinning at top speed faster than their opponents. Very nice.
Wow... good idea. If anyone else would want to make a shift-on-the-fly 2 speed wheel spinner, I wonder where they could buy hardware for this?
Hmmm...
Good luck to 968 with this great design.
Andy B.