It's a modified Elmers #29 mine engine (4 psi). The flywheel runs 2.5 x faster than the main shaft so the increased stored energy allows improved low speed operation. The next one will have a planetary drive coupled to the flywheel (~6:1) to enable very low speed.
Hopefully, this works, it's my 3rd post. Couldn't wait, had to test run before completely done. Probably another 100 hrs of cosmetic machining, painting and polishing.
The Concept Valve Cylinder First Run
I've been watching from afar for many years, awed by many of the projects shown here. I managed to score some nice machining equipment when my former employer let go 100 toolmakers and all their gear, so now I have everything quasi-setup in a new shop. My biggest problem is that I appear to have...