----- Original Message -----
Sent: Tuesday, May 23, 2006 1:09 AM
Subject: [FlyRotary] Re: Questions from a
potential rotaryphile
And all, The Powersport system used in the test did NOT have leaning
capacity. The Powersport principle owner reported on the other list. Hen 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
My main complaint about the Powersport / Lyc comparo article was that
they kept referring to the Powersport system as FADEC. It is NOT FADEC
nor did it have leaning capability. The 'FA' in FADEC stands for Full
Authority. If the pilot is directly linked to the throttle plate
of the engine, the ECU does not have 'Full Authority' to manage the
system. I've explained why this is important in past messages, no
time to repeat it now, but it is a vitally important point.
BTW, + - 10% is not NEAR enough range for the rotary. The EC2
allows + - 33%. The + 33 is more than enough but the -33 is definitely
needed.
The only other complaint with the article was the comment about me
"bragging that my engine cost less than my head sets". I said that
about my first engine. When it's true, it ain't bragging.
Tracy