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Hi all, This is a compound steam engine I started a while ago. Few specs before the pictures; Hp cylinder bore : 1.75" Lp cylinder bore : 3.5" Stroke : 3" Designed for 500 rpm. No casting, steel and bronze construction. Needle or roller bearing where possible, assembled crank. Valve design from...

Hi all. I tried to find some info about clearance between piston and cylinder head at TDC but no luck. I guess cylinder ports size/position may affect the clearance and whether or not the engine uses exhaust lap. Is there's any rule of thumb for this or some engineering must be done before...

Hi all I was reading a book on steam engines (most of their examples were pretty big, around 25in piston diam...) and they were explaining how does steam/exhaust lead/lap work, also some design of double ported slide valves, the relation between valve and piston speed with different linkages...

Hi all This is one of the few (3, one is dead, the other close to be...) steam engine (that never really ran on steam, just air) I build. This one is a double acting compound engine that I designed. ( the others engines are personal design too, never worked with plans for engines, yet..) Here...

Hi all, I'm new here and to steam engines too I did 2 "steam" engines earlier that I never tried out on real steam, but that runs nice on compressed air ( I'll try to take some pics and videos) I use to work with some rubber seals but now I am working on a new project (double acting, double...