Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Thank you,
Looking through the instructions, both cylinders need to be faced at the inlet ports, drilled at 90 degrees and tapped, then a 20 degree set up so the steam/air can be delivered to the cylinders to drive the piston.
This will be a careful set up.
I don’t think I have ever tapped 4-40 or drilled down to a set point.
Looking forward to it.