Bme 50
Nah, titanium is too heavy.
Must be made from ferro unobtanium.
Seriously...no way on 2 pounds.
That's what a Supertigre 2300 glow engine weighs without exhaust. And the BME will have over twice the displacement.
The ST doesn't have a steel con rod. I don't find any excess metal on the ST, so this BME weight sounds like a pipe dream.