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.

Well - There is FAA certified, and then there is ASTM certified for LSA
class planes.  What I remember,  ASTM spec book required 5 engines
to be under control of the company/person doing the certification.
Dual plugs or twin ignition for single plugs, single fault tolerance for
electronic ignition and fuel injection.  Materials certification and inspection
process from manufacture to installation (also apples to SLSA (ready to
fly) planes).  One way to determine TBO is leader of the pack hours. Can't
remember the other path to certification. Tear down inspections allowed as
long as no parts are replaced. I think gaskets were allowed so long as no
leaks.  5 min at full throttle equals 1 hour TBO.  I figured out a 130hp single
rotor test sequence of 550 hours that would equal 2,062 hour TBO. I doubt
a piston engine would survive as full throttle segments were continuous 15
minutes per hour (taxi, take off and climb, cruise, land and taxi), and
shutdown/cool off every 5 hours, averaging 6 GPH.
And the fuel was only about $10,000   :)
IMHO the Rotary is a superior fit for LSA.

Dan F