Hi Paul,
on that Mazda video on YouTube about rotary engine
production they make
mention of a 16b with aluminum side housings as a
future project.
It refers to increasing the capacity by increasing
the "stroke". I
guess they mean increasing the eccentric distance.
Most of us thought
that the ideal would be to increase the rotor width
to 100 mm.  Do you
know anything of this?
BR, Dave McC


I can't find anybody that will admit to anything. If
they do increase "e"
it might be for a higher compression ratio. They do
tell me wider rotors
(100 mm) are out. Too bad as the new engines will
have all new parts.

I would just be ecstatic if it was all aluminum.
-- 
Paul Lamar ...No rotor no motor.

The 40th Tokyo Motor Show 2007

Torque boosted at all engine speeds. Further
improvement in fuel efficiency.
Direct injection. Redesigned trochoid rotor housing
and increased displacement
Light weight and compact size through the use of
aluminum side housing and other measures

Hi Paul,
well just be ecstatic then,
BR and Enjoy,
Dave McCandless

Here is the link.

http://www.mazda.com/motorshow/technology/power/renesis/index.html

Doug can you go and take some pictures for us? If
not you will have
to put up with Robin and I again.  Also please find
out what the e and the R is.

Paul Lamar ...No rotor no motor.

Here are a few guess's.

Rotor the same width (80 MM) outside width +1 inch
to 13 5/8

I am surprised. I would think a wider rotor would
give a better
combustion chamber shape. Looks like they just
scaled it up in 2D :)

Outside height to + 1.5 to 14 inches less the direct
injectors.

e/R looks the same. My guess is high RPM is now
going to be more
of a problem. They may reduce the red line.
consequently max power with
a p-port ataround 10,000 RPM will be down. Too bad.
If I were doing it
would go wider rotor and use an aux P-port.

Max power p-port at 7500 RPM should be up to about
285 HP.
Great for the tilt rotor VTOL.

Perhaps wider would be a problem for the phasing
gears.

Well one up side it will fit in an RX8 with minimal
changes :)
Should plug right in to an RX8 car.

Weight about 185 +/- 5 pounds. Not much less than
the current RX8 motor
despite the aluminum end housings.


Paul Lamar ...No rotor no motor.

I sure hope the 16B makes it into production- I'll
change over from my 13B to it as soon as I can, if for
no other reason than weight savings. Looks like a side
port intake and exhaust.

Got my fingers crossed.

I'm only waiting on hangar space to get my plane put
together and into the testing process. I might be out
into a hangar within the month.

Brian Trubee



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