If you point the nose down and have the engine
produce the same amount of power you will go much faster and changing vibrations
might be suspected to be airspeed or airframe related.
However, I suspect that pointing the nose down does
take some of the load off of the engine.
What does it do in a 700 fpm climb?
Mark Ravinski
----- Original Message -----
Sent: Monday, May 23, 2011 8:03 AM
Subject: [LML] Re: FW: LNC2 Vibration
Issues
Folks,
I appreciate the
great response from the LML list to my vibration problem. I have checked
everything that was mentioned in the emails. Most people including
myself suspect a tracking issue. But here is the rub: On the ground the
tracking appears to be perfect with the engine noyt running. Now this is
where it gets interesting, in cruise and level flight at 24"/2400RPM I
can see some dither on my ASI and feel the vibration thorugh the
airframe. Now if I point the plane downhill at say 700fpm or more and
the same power setting everything smoothes out!
This to me suggests
something in the prop tracking or engine mounting arrangement since right
turning P factor is less with the nose below the horizon. Any
ideas?
Thanks
Tom
LNC2 50
hrs
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