I think this guy is a total doofus.  Suggesting that folks who are
converting auto engines believe that a PSRU multiplies HP is just
about as dumb as believing it yourself.  Where he gets his numbers is
a mystery.  A proctologist could uncover all of his research IMO.
Wonder if it ever occurred to him that there's a REASON why Corvair
engines or derivatives therefrom have not appeared on automobiles for
several generations.  Probably not.  My guess is that this guy should
not be allowed anywhere an airport without supervision.
Just my first impression.  Now, back to diffusers :o)  .... Jim S.

Eric Ruttan wrote:

> forwarded for comments.
>
> From: "William Epperson" <bill_eppy@yahoo.com>
> To: <canard-engines@yahoogroups.com>
> Sent: Thursday, December 04, 2003 6:37 AM
> Subject: [canard-engines] Auto engines in aircrafts...
>
> > Some common misunderstandings in dealing with an auto
> > conversion is that many people fail to take into
> > consideration certain factors, mainly one.  Say for
> > instance that you have an auto engine that develops
> > 200HP at 6000RPM.  You are using a PSRU that has a 2:1
> > step down.  You'd think that would double your power,
> > nope.  You'll still only be getting 200HP output at
> > 3000RPM, and that's assuming that you are getting 100%
> > efficiency from your PSRU.