Greetings,
Below are the notes from today's
adventure. As you'll read, there are certainly some
vibration issues.
A question for Richard- Have you run
your single rotor with a realistic sized prop, or just with the drive
itself? Have you added any flywheel weight?
Rusty
No, Rusty, I have not. However, I
agree with Lynn on the fly wheel being the issue with the torque pulses. My
load on the test stand is direct coupled, via a donut dampener to the load
prop. I have the space in the fly wheel housing to add weight if
necessary.
For the full size prop with redrive,
I have to modify the test stand. This will happen as soon as I get some
relieve from the house building.
At the RPM you are talking about, I
do not think there is an engine balance problem. Even with a badly balanced
engine, related vibrations did not show up below 4000RPM on my
engine.
FWIW
Richard
Sohn
N-2071U