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

Quote from: RedRyder on June 07, 2024, 10:21:26 pm

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.

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The extra large exhaust pipes and the early style port covers (on the steam chests) are features found on mine due to the early cylinders I used. I have only seen the large exhaust ports on the smaller military air pumps Tom Sr. made for the DOD.