Hi- not sure if this is the correct email address,
but would like to find out more about the aluminum rotors?    

    Charlie Pilkington    

Since somebody let the cat out of the bag at SevenStock-2010 this is an
indication of what you are going to have
to deal with Jeff & Dave :)   What is the status of the test
engine?

Photo's by Todd Archer.

Paul Lamar       

Hi
I don't think that an alloy rotor will work. It's better to use Titanium
like MAZDA did. Plenty of reasons. The Titanium rotor should iron coated at
the side, especially if the side plates made from alloy.
Regards
Paul Woelfle

The best material would be beryllium aluminum alloy good to 700 F
and .7 times the density of aluminum, coated or otherwise.
Think conductivity is higher than titanium.

The theoretical RPM would rise to near 20,000 RPM and HP
would near double if breathing (VE) could be maintained at
current levels.

Beryllium aluminum is expensive and toxic to machine.
One of my sources told me the lowest cost supplier is selling
ex nuclear bomb material that is still radioactive.

There are some new NASA aluminum allows with higher strengths
at 500 F being used for pistons with the ring lands closer
to the tops of the pistons.

The Mazda rotor runs about 375 F. Of course the low viscosity
oil must be kept as cool as possible.

Paul Lamar