Paul Lamar wrote:

The weight reduction claim of 22 pounds over a chain drive is impressive.
the Rotorway Exec must disconnect the rotor system from the engine some other way.
Perhaps a one way clutch?

That chain drive has to be replaced very often, I think every one or two hundred hours, and the factory parts are over $600.  Also, before you start the chopper, you raise the tail rotor to get oil on the chain, then spin the MR once, and repeat.

Hans

The AirCraft Rotary Engine NewsLetter.              Powered by Linux.
ACRE NL web site.
http://home.earthlink.net/~rotaryeng/            http://www.linux.org