It's a nice runner for sure, but it's not using the cutoff mechanism as yet. The governor isn't connected. You'll notice that the trips are at the bottom of their pockets and the valves are being operated by the section of the slide between them. The catches seem to be adjusted to do this, but I believe that on an actual engine failure to catch the trip at any point would cause the engine to stop.
Perhaps Dennis will chime in on this.
I also wonder if the dash pots are working of their own weight, or if there are return springs under the base as shown in the plans.
The cylinder side of the crosshead has some sort of clamp on the piston rod that's not in the plans. It would be nice to know why that was deemed necessary.
