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Dwayne,
Just some thoughts, please don't consider me an
expert.
I believe you have a couple of options, a 20B
should give you approx 270hp ( or 90 hp x 3 rotors) in basic configuration, some
of the 20B builders can confirm this or otherwise. Parts should be not that hard
to get once the housings development is complete. You can get the 3 rotor
crank in a number of outlets.
You should be able to build a 20B with the light
carbon steel housings replacing the heavy cast steel housings, for about the
same weight as a 13B. That would be nice.
The light carbon steel housings are designed
for PP, that could give you as much as 360hp in a 20B, if you design for optimum
HP or less using lower compression rotors.
A 2 rotor 13B -PP might get you 250hp then again
might not however I feel it would give you the 230
hp. A 2 rotor PP with NOS would get you the take-off power required. I
believe that currently being done by someone.
Then there's the Turbo, which you know
about.
Just remember to consider all options.
George ( down under)
Bobby / Tracy -
Do either
of you know what HP your Renesis is generating? I'm very curious about
the supercharged Renesis. If you know the installed weight that would be
great info too?
George - I'm
building a Bearhawk on floats and would like 250+ HP.
Anyone who cares -
I currently fly a Stinson 108-1 behind a Franklin 150 so I'm painfully aware
of how hard it is to come by parts for unique engines. That makes the
20B much less appealing as an option for me. That being said, I watched
from the Sea Plane Base at Oshkosh as an Aeronca Sedan with 145 HP lumbered
across Lake Winnebago trying to get off the water. People actually
cheered when he finally broke a float free. I think he was in Appleton's
airspace by the time he got into air (no, I'm not kidding either). That
type of performance just won't cut it so anything less than 230 HP is not an
option for me either.
Thanks very
much.
Dwayne
From: Bobby J. Hughes
<bhughes@qnsi.net>
To:
Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Mon, August 2, 2010 6:33:36
PM
Subject: [FlyRotary] Re:
Bad rotary week
Dwayne,
My super charged renesis uses 1 oz per gallon of 2
stroke oil. So it's very likely David is using 1 quart every 5 hours. Question
is 2-stroke or sump? No indication I am using any sump oil. But I only have
about 35 flight hours. I do have a small internal coolant leak and need
to replace an o-ring when my fiberglass work is finished. I would choose the
renesis side port exhaust over a peripheral port exhaust any day for our
application.
Bobby Hughes
For anyone hoping
that a 16X would show up any time soon: not ... gonna ... happen.
No RX7 and the RX8 is still powered by the Renesis for
2011.
As if that's not
bad enough, when I was at Oshkosh I took in David Atkins rotary seminar.
I came away pretty depressed thinking that I probably won't put a rotary
engine in my airplane. Is everyone else really using 1 quart of oil
every 5 hours? He also didn't have much good to say about the
Renesis in an aviation application which leads me to conclude that the 16X
will fare even worse in aviation applications as it is tweaked to meet higher
EPA requirements and produce more low end torque.
Is anyone but
Tracy using a Renesis? I'd really like to know what HP you're getting,
what the fuel burn is and how it's holding up.
Thanks,
Dwayne
P.S. I
couldn't find any rotary planes on the field at Oshkosh. Perhaps they
sank into the mud.
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