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Bill,
Good on Ya! I'm a bit behind my e-mails BTW.
I have a great solution for the PP problems of leaking coolant. I notice
that PL advocates welding to the inner rotor steel liner - however not much to
weld to, and then pressurizes the resin filler.
Now this is not my idea but it sis working well locally and that is to weld
a Al tube to the inner Al housing - weld it rights around and then fill the
remainder with resin. Seems to work much better than what was done previously
and ahs held up in well in racing applications.
George ( down under)
----- Original Message -----
Sent: Monday, September 07, 2009 5:06
AM
Subject: [FlyRotary] Re: Three or
two?
Gonzalo,
Sorry to be contrary, but in my opinion the ONLY way to go for a flying
rotary is P-port. All of the original Power Sport engines (the Everette Hatch
P.S.) ran P-ports. The manifolding for a P-port engine is vastly easier. In
fact Hatch and Steve Beckham built several engines with P-ports that even ran
reverse rotation so they could get proper propeller rotation with some
gearboxes. You can even P-port an Renesis and it still works. The reason that
Mazda isn't P-porting their race cars has nothing to do with if P-porting is
better, it is racing organizations requirements. The reason for the side port
Renesis is for emissions and low RPM fuel economy. Those are areas that are
only important in a CAR. The typical aircraft runs 50% to 90% ALL THE TIME and
P-ports are much better at mid to high RPMS. The Mazda Le Mans winning engine
used P-ports and they were running with a fuel economy formula. (the fuel was
limited) For high output P-ports just work better.
Bill Jepson
Gonzalo,
A lot of people
talk about peripheral porting rotaries but nobody is doing it with a rotary
that they plan to fly behind. If it was such a good thing, Mazda would
be P-Porting their cars. Instead they are going away even from the
peripheral port for the exhaust with the Renesis.
If 200 HP will do
it for you the Renesis is the way to go. This process of putting an
alternative engine in a plane is hard enough without violating the KISS
principle.
Put in a Renesis,
no turbo, no P-Port.
Bill
B
From:
Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of George Lendich
Sent: Sunday, August 23, 2009 5:57
PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Three or
two?
I don't know if the Renesis has
a turbo version, I didn't think it did. All turbo 13B's require low
compression rotors.
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