Ahh so thats how ya steer it! :p
I cant see these without airbrakes as they had them on freight service in 1913 as an exesory. Standard on the 28 engine we run. It looks more like the entire dash panel was added out of a bus or semi tractor. Rather crudely too:p
The gauge isnt the correct one however, but most likely is the tank, and the red as the brake cyl. Does this have an auto tranny, or is it more of a diesel electrc?nevermind, there are no amperage gauges for the traction motors. I have to wonder if this is the one from the cherry valley RR.

This is a hydraulic critter driving the rear truck via a drive shaft. I neglected to take a shot of it but it seemed more bus or truck like than railroad like. I wish I'd looked forward more to see what kind of transmission was actually under there.

You know what, next time I see this machine I'm gonna give it a thorough ogling at. Looking back I don't know if the rear truck has solid axles or if there are differentials on them.

its probably a bevel gear /ring and pinion on a solid axle, and most likely the rear is chain driven from the front. as even the ge centercab we have at work is chain driven to the secondary axles.
Looks like they had their anual event with that much rolling stock out! nice pictures as always!