"AJW" wrote in message
...
Wouldn't you think the more serious interference would be the prop wash
beating
against the airplane itself? I'd have thought we'd see more pusher props,
but
that's not a common SEL configuration either. I wonder why?

Pusher props are only *theoretically* more efficient. Since the airframe
disturbs airflow into the prop, you just wind up with a different kind of
inefficiency. Also, there's the problem of how to protect the prop from
ground strikes, engine cooling, CG and the like. All solveable, of course,
but the engine/prop in front configuration actually works pretty well in
most cases.

Pete