Paul, Every time I go to a hot rod or experimental aircraft show, I
 am invariably impressed with the clever thought and ingenuity.  I
 had that feeling again when I came across this "battery replacement"
 proposal.
 http://techcrunch.com/2011/06/14/rethinking-the-battery-clarian/
 Grant Johnson


 If it rotates like a Wankel, sounds like a Wankel and smells like a
 Wankel it is a Wankel. I am surprised the patent office is so stupid
 that they gave them a patent on it.

 A Wankel by any other name is still a Wankel :-)

 Of course it stores more energy per pound than batteries as liquid
 hydro carbons are almost unbeatable in that regard. The only thing
 that comes close is rubber bands. These are pictures of the Rubber
 Bandit. Never flown.

 Paul Lamar


The patent has been applied for, not issued. It's a Wankel with a
generator integrated into the housing, or the eccentric.

David Josephson

Maybe the rotor is a magnet. That might work with aluminium end housings.

I say might because aluminium has magnet properties.

If you have a pendulum with an aluminium disk and you have a magnet with
a slot in it at the bottom of the swing. In other words at Six o’clock.
Now drop the pendulum from three  O-clock and it will stop at six
o’clock. Now cut slots in the disk and it will go right through the
magnet and back and fourth.

I suppose they have tested this device and they are not affected by
magnetic properties of aluminium. Maybe non magnetic SS will work for
the end housings.

Maybe the e-shaft is magnetic and there is an armature  section outside
the engine proper. No different than connecting a generator or
alternator in line.

Cooling the side housings would be a challenge with a magnetic rotor.

Interesting idea if it works. I wonder what size it is.

The small Wankel engine is not a problem as many Wankel model airplane
engines have been built and sold. They are usually rather expensive.
There is one on Ebay for $410. The Nitto engine is slightly over one HP
or 934 watts at 17,000 RPM.
Trouble is it runs on model airplane fuel with a glow plug. I'll wager
it is LOUD!!! :-)

Paul Lamar


A few years ago I was developing a Pancake generator to use in wind
turbines as they have some major advantages over the standard set up
when using Neodymium magnets.
I had some large and at that time most powerful rare earth magnets
available made N50.

During the development of the generator I was very careful about using
any magnetic tools, these particular magnets had the capability to do
some serious damage to the fingers if you got them in-between the magnet
and spanner.

I noticed that passing a piece of aluminium plate through the lines of
flux caused the aluminium to be deflected. The effect was substantial.

Andrew Campbell.

Hi all.  An aluminum plate, or any other electrically conductive material, will act as a single turn winding on a transformer.  But that turn is shorted!  So the effects seen are the result of the "shorted turn" generating its own magnetic field from the current circulating in it.  Exactly the same as the torque you field when you spin an alternator shaft with the output shorted.  The stater winding will also get warm from the high current in them if you keep turning the shaft.

 This general effect has been used for at least 100 years to generate torque from a spinning magnet.  Older auto speedometers has a flex shaft connecting the drive shaft rotation to a spinning magnet in the dash display.  A copper disk, connected to a 'spring returned' indicating arm, was placed near the spinning magnet and the resulting torque in the disk was displayed as miles/hour.  Very handy trick.  No electricity needed.

Induction heaters use the same effect.  The varying magnetic field induces current in the meta, whichl heats the metal by I*I*R effect (resistance heating).  Exactly the same effect that heats the filament in a light bulb, just no separate generator and wires.

Craig Thomas



The Rotary Engine free News Letter. Powered by Linux.
If you want off the list PLEASE let me know and I will remove  you.
ACRE NL web site. http://www.rotaryeng.net
You Tube http://tinyurl.com/beqqxas
Copyright 1998-2016 All world wide rights reserved.