The first model Mason only has one pump, it's a 9/16" bore X 3/4" stroke. The boiler/burner at 17" is larger than the 14" etc boiler than most of these little carriages used, but the steam demand will be much lower with that engine/vehicle weight and intended speed, so I'm thinking lower steam demand, lower water requirement, should equate to faster steam generation and overall steam production and the pump should be able to keep up.
I did add a few feet of superheat over the top on the way to the throttle.
- One of the interesting features of this restoration is the Victor/Overman Westinghouse type air and water pumps. Unbelievably, they still work (sorta), they need a little TLC, but I ran them on air and they each cycled back and forth.