Better late than never

I really should have mentioned at the outset that the current project is a steam pump with double acting engine. It's a direct acting pump i.e. the piston rod is attached to the pump piston (ram, plunger call it what you will). The engine was designed by Australian O B Bolton around the 1940's and has been available as a set of castings at some point.



As the design is pretty straightforward my fabricated version shouldn't look too different to the one made from castings.

Other engines by Bolton can be found here and here