Vance and Emily Jaqua wrote:

snip

What did you think of my suggestions to remove the bulkhead
behind the front seats on the TR-4 and use the
center consol to take some of the fuse bending load
instead? I and some others want to put in car seats.

The side stiffness can be provided by building a
cantilever beam up the sides and leave enough room
to get creative with the seats - I tried to get
Bill to put in adjustible seats. The center console
could certainly made structural, but it would
complicate the assembly and rigging of those
controls routed inside it.

snip

The Wankel/Mazda rotary is in perfect balance and enjoys
entirely rotary motion. There is no stopping and starting
up in the other direction going on inside. As such
the e-shaft has no stress concentrations and is
cannon proof. Most compression/expansion forces
are entirely contained in the one piece rotor.

I tend to side with Mark, in that you can measure a
displacement that is equivalent to stroke, and that
 number times the flank face projected area will
give you the single volume displacement.

That only works in a rectangular tube with a rectangular
piston in it. You have to calculate the crescent shaped 
(in side view) chamber max volume.
Anyway displacement is academic. What counts is HP per
pound and overall engine size.

It is
neccesary to counter balance the center shaft to
balance out the system, altho at that point the 
system is in total balance, which you cannot do with
a conventional piston [engine]. 

I contend that the Wankel is
as true rotory as the Gnome was, nor as much as
some of the less successful vane or gear engines.

Do you mind re-wording that sentence? :-)
I think there is something wrong there.

Mark Kettering and I had a little
argument on that over at the KIS factory last week.
He thinks/thought the rotor moved up and down inside
the housing  but it don't :-) It orbits and rotates.

Paul Lamar

In orbiting the center of the rotor moves up and
down, and from side to side just like the crank
pin in a conventional engine - aint it fun to
argue over the nits - 

Yes of course. It moves in all other directions 
in that plane as well :-) We call that rotary
motion. :-)

So far I don't know of
a seriously planned installation of a rotary
in a KIS - so far - do you? - Anything that will
make useful, reliable horsepower (or Watts for
those Metric freaks)  will fly airplanes - Vance

Wschertz@aol.com wrote:

Bill Schertz
Batavia, IL
KIS TR-4 under construction
wschertz@aol.com

Paul Lamar
 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org