Found this Chain Drive used with a Mazda 13B Rotary in a Jet Ski, is their
a limit on the RPM Chain Drive and Belt Drives can run at, does not look
like much gear reduction here.

http://www.youtube.com/watch?v=3aSBItXzMXg&feature=related

I noted that in another email it was mentioned that the Maverick Flying Car
was FAA approved LSA, they are using a Subaru Engine, I was not aware that
Subaru engines where FAA Certified, the more I read and see the more
confused I am with this Light Sport Aircraft category?  Why wouldn't a
Mazda Engine be Certified if someone used one in a Special Light Sport
Aircraft Airworthiness Application...

http://mavericklsa.com/certification.html

GFCurtis Jr.

Light sport planes are not certified.  They must meet ASTM standards for
light sport category.  They can run whatever they want but most don't want
un proven engines that they are responsible for.  You can build an E-AB
plane that meets LSA standards and fly it LSA if you want.

Randy