[ChrisH]

Originally Posted by T3_1565

I don't see why using a locking system and pneumatic cylinder breaks any of these rules at all.

It depends on how it is used. You could apply force to the rod of a pneumatic cylinder that had air trapped behind the piston by a closed valve. This could cause the air in the cylinder to exceed 60psi, which would be a rule violation. There are various ways to both do this sort of thing and prevent it, depending on what you are trying to accomplish