Hello Paul, again, I'm really intrigued with BJ Schramm(past) he
redesigned a suburu engine for use in the rotorways rotorcraft. From
what I can gather he was very reputable and apart from his Rotorways
pioneering he developed the Helicycle,      What do you think of his
engines, they have a history, but i would like to know what if
anything u have to say by way of appropriate opinion. Yes they are
still a hand grenade(reciprocating pin pullers). I now lack confidence
in those engines as far as my life goes, Throwing a leg out of bed is
not a problem in a car, just a pain to tow home. a helo would be great
but the room to experiment is tricky, helos,offer less room to
maneuver weight and power wise. I like the rotorways talon. It lacks
about 50-100miles in range and of course a smooth rotary  power plant,
for this application a rotary has most of a turbine benefits with
superior fuel burn. the R.I.600n at 147hp or 167hp supercharged/
normalised. the rotary would be ideal for such power/weight apps as
fuel load would compensate engine load positively. BUT helos have
rotor weight issues etc that fixed wing don't have, B J has passed,
sadly with his knowledge, KISS aviation do a turbine fit for the
rotorway executive but not the talon yet,a rotary would work well I
should think. I really dont want a reciprocating bomb! weight is a
consideration, the talon 300 turbine is over $240,000, or $97,000, for
the non supercharged, talon 600. The turbine gobbles 80 gal/2.5hrs
icluding reserve, surely a rotary has to come somewhere between the
two. good power, weight compensated by fuel weight saving. am I on a
winner? Oh the insurance mob, how much for that custom engine
fitment???

Graeme Riley