Although alittle off subject about your orginal question, I just want to
throw this in. The Mazda Rotary engine is a without doubt awsome engine. My
dad drives an RX-7 (13B engine) and it is sucha silk smooth engine. If it
wasnt for the RPM buzzer there is no doubt that you will go into and exceed
redline without knowing it. They are indirectly designed to do what we need
of them in an airplane, Run at high RPM producing lots of power with little
weight not to mention very reilable. The only thing that really fails on
them is the apex seal which when they go out it just gets hard to start.
A hanger buddy of mine was sharing a story about the 3 rotor engine
going into a legacy. The owner of the Legacy was just testing his engine
with no gearbox or prop on it but on the airplane. He was reving it up by
gunning the engine and actually over reved the engine, causing the heavy
flywheel to come apart (shows how high they can rev without realizing it).
The only undesirable effect of this engine in a KR would be it's fuel
consumption. It will burn slighty more than a typical lycoming. An O-200 is
about 6 at cruise while the rotary is proubly about 10gph.
Justin
----- Original Message -----
From: "Ron Eason" <r...@jrl-engineering.com>
To: "KRnet" <kr...@mylist.net>
Sent: Wednesday, April 28, 2004 9:52 PM
Subject: Re: KR> engine choices
> When I was contemplating the question years ago. My number one criteria
was
> HP/Wt. ratio for the engine installed. Getting below 2 Lbs/HP was a noble
> goal [3 lbs/HP was out of the ball park. Give anything else, you can make
a
> good case for anyone. Just looking at HP alone will not help your bird
any
> fly any better. In the end any engine you use comes down to plane Wt / HP
@
> cruse RPM. And given enough money you can make any of the engines
> reliable.[ i.e.. fuel injection and electronic ignition, stronger
materials
> and etc.]
> For example look at the Jabaru Hp/Wt.
>
> KRron
>
> ----- Original Message -----
> From: "Brian Kraut" <brian.kr...@engalt.com>
> To: "KRnet" <kr...@mylist.net>
> Sent: Wednesday, April 28, 2004 1:13 PM
> Subject: KR> engine choices
>
>
> > Without stirring up the debate on which engine is best for a KR, does
> anyone
> > know where I can find a relatively unbiased comparison and list pros and
> > cons for the various suitable KR engines including the VW, Corvair,
> Subaru,
> > and Mazda?
> >
> > Brian Kraut
> > Engineering Alternatives, Inc.
> > www.engalt.com
> >
> >
> > _______________________________________
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> > please see other KRnet info at http://www.krnet.org/info.html
> >
> >
>
>
>
> _______________________________________
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