Paul,

Here's some video data for you.  http://www.youtube.com/watch?v=dZrADAieO6w

It was taken this morning with a Flip video camera during my takeoff run and
climb to about 4k msl.  OAT was 78.  Initially, the mixture was set the same
as my last report as indicated by the EM-2's mixture bar.  Then I adjusted
the mixture a bit richer, toward "best power".  Best I can tell, the fuel
flow went to 28.6 gph.  Sorry for the shaking as I was both the pilot and
the cameraman.  I stopped recording when the sun blanked out the EM-2's
screen.  I need to design a camera mount before I try this again.

Prop was set to 2100 rpm for initial takeoff, then to 1900, and finally to
1700.  Max engine RPM (that I can read) was 6926, but dropped back to
approx. 6350 as speed increased, prop still at 2100.  You can hear engine
rpm drop when I changed prop setting.

It should be noted that the primary oil and water temps are on the EFIS, not
the EM-2.

Mark S.

Good work Mark. Thanks for the data. I discovered Mike did not install the
4 push button sw's on my EM-2 so I'll have to do that to read that kind of data.

At a BSFC of .6 that is 286 HP. Not bad for only 6336 engine RPM. I get 2223
prop RPM with a 2.85 gear. Why do you set the prop RPM so low? What is the
tip speed at 2223 RPM on a 76 inch prop?

What is wrong with the EM-2 display? It looks like mixture bars are over writing
the text.

Sounds like you need a set of David Clarks for your video camera :)


Paul Lamar