> Paul,
>
> When I was at the Seven Stock Show, I noticed that all of the rotors were
> cast iron. Has anyone made aluminum rotors? Is there too much thermal
> expansion to use aluminum? I was also thinking that the rotors could be
> made of a ceramic--low expansion, lighter weight, and possibly lower
cost.
>
> Steve Brazil
>
> I think it is a heat issue. The rotors can run 500 F or more.
> Titanium seems to work but it is expensive.
>
>
> --
> Paul Lamar ...No rotor no motor.
>
> The Rotary Engine NewsLetter. Powered by Linux.
> ACRE NL web site. http://www.rotaryeng.net
> Copyright 1998-2006 All world wide rights reserved.
>

Here is a photo of a lightened Mazda 13b rotor.  It can be found on the
website

http://www.der-wankelmotor.de/Motoren/Motoren_Mazda/Mazda_13B/mazda_13b.html

Does anyone know anything about this?  It seems to me that not only can
we make the rotors out of a lighter, more durable substance, we can
alter the construction.  The rotor does not need to be a solid.  It can
have just the material it needs to have.  It will be lighter and can
still be reliable.

I do not read German.  I do not know if the German written beside the
photo has anything to do with the photo of the lightened rotor.  I have
included it, just in case.

http://s12.photobucket.com/albums/a234/JacobPotts/Atom/Rotary%20Engine/?action=view&current=LightenedRotary13BEngine001.jpg

Les Nordman





The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site. http://www.rotaryeng.net
Copyright 1998-2006 All world wide rights reserved.