squared. The tach has a red area marked and is noted that you shouldn't
run
in that range for an extended period, it's around 1700-2000 RPM's I think.
What's up with that? Vibration? Harmonics? I was also told to use full
prop
if under 100MPH or under 15MP. Can anyone enlighten me on this?

Wayne

Yes, harmonics and vibrations, there are many aircraft that have similar
limitations, the C177 comes to mind, and also some 3 bladed Arrows.

Full Prop if under 100MPH? not sure about why that one.. but I'm sure the
idea of going to full prop (high RPM) when under 15in MP, you are most
likely below the "prop governing range" and want the best performance, if
your under 15in MP you are either "throttled back" for descent, or very high
MSL.

enjoy the plane..
BT