Steam engine with overhead valves

This is the same engine as in my other video. I removed the eccentric valve gear and replaced it with a automotive type cam system.
Since the exhaust stroke never changes it has the hardest to access cam. The inlet cam can be changed in a few minutes for a different cutoff.
The engine is running at about 25psi in the first half, and about 45 in the second half.
With the exhaust valve installed the uniflow ports do almost nothing, I blocked them and it had almost no effect speed wise. Running on steam with the ports open, you might get a reduction of steam use as the exhaust steam would not cool the head.
The engine is running on air in the video.

Category:

Science & Technology

Tags:

• steam
• engine
• neverwas
• haul
• kimric
• live

[bddc201]

How is this an "overhead" valve?

[accordeon]

@bddc201

The valves are set up in the manner of a OHV gasoline engines.

[accordeon]

The inlet valve is a regular whistle valve I got from "Mc Master Carr" supply.

[0312Anel]

because it got the valve lifter, push rods and rocker arms

[tractorboy8420]

the fierst OHV!!!

[rangerssteamtoys]

Where did you get the inlet valve?