Don Dunbar wrote:

Hi there Paul,
There has been little progress over the last few months as I have been very busy at work.
The PRSU has reached the final stage with some small modifications to take place.
I have attached some photos for you and the group.
All up wieght including the bell housing, flywheel and drive flexy coupling is 21Kg or 46lbs.

I sent an earlier drawing that did not show the critical thrust bearing.
Here is a later drawing showing the necessary sun gear thrust bearing.

Don, when I get some time I will do a 3D of your Mustang II engine compartment.
Robin is already bugging me to go back to Australia. We may leave any minute :-)

Paul Lamar

Don or Paul,

Where does one get a 2.0 kg flywheel ? Are they available from a vendor,
modified aluminum, or home-brew ? Together with the PSRU and the prop is
this enough rotating mass for the engine to idle smoothly ? Would a
single rotor require more ?

Fred O.

That is the stock auto transmission flex plate. I have no idea on that last
question. What are you using for a fuel system? Carb or EFI?
Are you sure it is balanced correctly? What is the idle RPM?
Do you have a prop on it? The prop acts as a giant flywheel.

Paul Lamar
 
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