Simplex action from a Starck of Chicago player:
Pictures of the Simplex action from a Starck player that I worked on recently.
Pictures lower down the page show details of the stack being dismantled and the pneumatic / valve units typical of this system. They make for difficult valve travel adjustment but easy removal if there is ever a problem.
The tracker mechanism after cleaning up and reassembly works beautifully. Very responsive and efficient.
Regulating the player action.