Royce Wise wrote:

Paul
This is a picture of the midwest single rotor.
Are they using a single balance weight on this engine, or is the photo missing the other

weight?

Royce

Missing the other weight. Interesting combustion chamber eh what? :-)
Note the needle roller bearings in the rotor. This is why they
must limit the RPM to only about 6000 RPM. If they went to plain
bearings and a high pressure oil system this little jewel ought
to develop twice the HP and run at well over 10,000 RPM.

Paul Lamar

Not so sure about that Paul.  Here is a picture of the whole engine, well most of it anyway.
Only one balance weight here.
It also looks like they use a nut on both ends of the e-shaft instead of a bolt on the front.
I didn't see any prices on their web site.  Would be interesting to know how much they think of
this engine.
It also appears that they use studs instead of bolts for holding the engine together.
They are using a caged roller bearing in the rotor as well, and it and the timing gear is secured
by snap rings.
It is also a p-port engine, and it looks like both plugs are located in the same arc, and not
split apart like the Mazda. The next picture of the complete engine shows that as well.
Their statement about the ignition system:
   Ignition System                Duplicated Capasity Discharge System with 2
                                          plugs/rotorTriggered by inductive unit sensing
                                          edge of flywheel
 Mounting                         Triggered by inductive unit sensing edge of
                                         flywheel

Yet the combustion chamber pocket has a notch in it as if the plugs were split.
The housings are liquid cooled, but the rotor is charge cooled.
It appears that the front of the engine is the drive end. That must be the flywheel, Their specs
state that the generator is a brushless type, flywheel mounted.
The gearbox ratio is 1:3.225. Didn't see any torque ratings.

Maximum Take Off Power  37,3kw (50 PS) 50 HP without gearbox,
                                          35kw (47 PS) with gearbox at the propeller  shaft

    Maximum Engine Speed    7,500 rpm
    Maximum Cruise                6,700 rpm


Can you enlarge the picture of the complete engine so we can see some more of the details?
My software won't load the file to do so.
Royce

Well I'll be. This thing has an unbalance couple.
Its got several rotary warts. If done right
this would be a little jewel.

Too bad Moller can't get his small engine on the market.

Paul Lamar

I take it back. The large gray flywheel has the required counter weight
built in.

Paul Lamar
 
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