I was at a small airport this past weekend and on the ramp was a Stinson Reliant with a 300hp radial. Great machine that is slow but will lift 3 small states or 1 large one. Anyway I mentioned what a great sound an old radial made and he laughed saying, "Yep. 'a dollar.. a dollar.. a dollar.. a dollar'." Never thought of it but at idle, it does sound like that.

Not the aircraft this weekend but a good looking Reliant.