"Bret Ludwig" wrote

The Harley Davidson V-twin is also a museum piece, but it's a museum
piece made in some considerable quantity, and it will put out more
sustained power longer than any Continental before the 0-200, and the
engine with a belt redrive is, if overpriced, at least something you
can count on parts being available for for awhile, from NON-AVIATION
sources.

Check your facts. The Harley engine that makes 100 HP is a modified engine,
and therefore unlikely to be able to come close to sustained 100 HP on an
extended time period test.
--
Jim in NC