Paul,

I made it out to the airport early this morning and made a flight while it
was still cool (below 100*).  This time I set the prop controller to 2300
rpm instead of the usual 2150.  I held it at the numbers at part throttle to
allow the prop to partially adjust, then released the brakes and applied the
power gradually.  Engine rpm came up to 6980, more or less.  Much better
than at 2150, but it takes some finessing to keep the rpm's below 7500.  I
took some video, but not of the initial ground run.  It starts after I'm in
the air and climbing, but it shows the various EM-2 screens.  I used a
tripod and the data is much easier to read.

Upon reviewing the video, I was able to calculate the bsfc based on a fuel
burn of 16.5 gph and 220 hp.  Came out to .45 bsfc.  So, yes we can!

The file is too large to attach and send via email, but I'll try to load it
on YouTube later today and send the URL.

I also took a second video where I went from a cruise setting of 1700 rpm
(prop) to 1900 rpm.  Speeds climbed to 208 mph.  This was at 6500 msl,
straight and level.  Some day I'll go to 2100 or higher and see what she's
made of.

Mark S.
P-port 3 rotor Lancair ES.


Good work Mark but I kind of doubt the .45 BSFC. That would be a world record
for a rotary :) NOBODY has reported less than .47 so far at full lean.

How did you determine 220 HP?

Paul Lamar