Any body running an engine notice that or is it just
my RV4? Also the mixture is rapidly varying which of course
could be caused by the rapidly changing fuel
pressure. My pressure regulator is referenced to intake
manifold pressure. Is everybody doing that?

It is so bad I can't believe the engine runs.
Now that I have learned to steer the RV I can focus
on what is going on with the engine :)

Paul Lamar


Paul, here are a couple of plots from recent flights,

The 1 psi pressure variation is probably an artifact from the sensitivity of
the logging software.



Bill Schertz
KIS Cruiser #4045
N343BS
Phase one testing Completed

Great work Bill. Thanks for sharing that.
What are you using for data logging?

Paul Lamar