-------------- Original message from WRJJRS@aol.com: --------------

In a message dated 5/22/2006 11:33:51 AM Pacific Standard Time, keltro@att.net writes:

Ed, Al and all,

    My first post about the "Sport Aviation" Rotary/Lycoming comparison questioned

the fuel burn part of the test........It is my understanding that the "Powersport" fuel

system lacks a leaning system........Does anyone in the group know if this is true ??

    If this is true that would severely affect the Rotary fuel burn numbers........On the

other hand if the "Powersport" system has a leaning capability do the owners know

that the Rotary can be leaned very aggressively compared to the Lycoming as proved

by Tracy Crook and verified by many others........Tracy has reported fuel specifics

of as low as .47 lbs/hp/hr with aggressive leaning if I recall correctly !!

   Jump in here and help defend the Rotary reputation Tracy , Ed and any others now

flying with "Real World Experience" !!! IMHO

--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2

Kelly,

And all, The Powersport system used in the test did NOT have leaning capacity. The Powersport principle owner reported on the other list. He said the system was far from optimized. He also commented the next system will allow +- 10% on mixture. The comment was also made that the new exhaust system is much quieter. The original was 92-93 DB at 50' which is loud. The new system is expansive but reported to be 89 DB which is much quieter. For aircraft use tuning will result in much better fuel burns. We also seem to need to be sure to have somekind of dynamic mixture control.

Bill Jepson