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

Very cool and very interesting. Congrats, Mike..!!!

I built a 55 with 4 screw cylinders and I believe they are bigger than what are on your newer engine.

I also think this one has smaller screws than what Jensen uses on their 4 screw cylinders.

When you receive it, please measure the outside diameter and compare to your pre-war #25 cylinders and let us know.

Whatever the origin, the modification work looks excellent!

Thanks, Gil!
I can’t wait to examine it when it arrives on Monday. 😁
One thing I find interesting is the early style block-off plates used on the valve chests. If someone modified the normal cylinders that would be found on an engine like this, I would think the valve chests would have the rivets plugging the holes like you’d usually find.