We were marveling at @Gilligan 's new boat and motor, came across this. Pure Science. Advance to 10:40. If you can get past the pretty girl.
Maybe the mike didn't pick it up well, but that was the quietest steam engine I've heard. So smooth.I've always wanted a triple-expansion steam engine like the one in that video
That's one of the neat things about a triple-expansion engine like that. The steam is "used" three times before it is exhausted...leaving little energy and pressure in it when its finally released. Nathaniel G. Herreshoff perfected the design of those back in the 1800s..Maybe the mike didn't pick it up well, but that was the quietest steam engine I've heard. So smooth.