Ray Clift in 1947-the tube we see to our right is an external feed line that leads to a separate boiler (later to be installed in on the bike).

From Makzine:

"Ray Clift was born in August, 1912, in Bellingham, WA, where he spent most of his growing up years and young adulthood. Ray was an inventive fellow, as were many of his contemporaries, as kids back then didn't have many toys. They made their toys! Ray's working years were spent in photography, machine shop, mechanical engineering and drafting. The motorcycle built in 1947 was Ray's only invention using steam power. We recall him saying that the motorcycle wouldn't go very far.

Ray must have sold or given the motorcycle to someone, probably before he moved to Seattle, WA, about 1949. I remember that an old friend of his told him that he had seen what he thought was the motorcycle, lying abandoned and rusting in a field."

Detail of the engine.