Hit and miss "cam stopper" engine

[kevm14]

I've seen hit and miss engines but nothing like this one.

https://www.youtube.com/watch?v=bRYRzvajpEA

[kevm14]

Here's a different hit and miss engine: https://www.youtube.com/watch?v=Ra20GCHo7vg

It just occurred to me that this early style of speed governor means these engines had no air throttle. Which also meant they had no pumping losses.