Hello Paul et al,

 I am now starting with my B.Eng thesis work, which I decided to be:
 A Rotary PSRU for constant-speed propellers.

 Because of availability, i think it is best to design this unit first
 for Renesis engine, and for FAA commuter class req's. Aerobatic, 13B and
 20B can come later.

 First, I need to find valid parameters to design the unit.

Regarding this - I just found out that on Contact magazine Sep-Oct 2007,
Issue 90, there has been an article named:
#
A Vibration Study of a Mazda 13B Installation in a Van?s RV6A. Steve
Boese goes about studying vibrations in a thorough manner.
#

Um, er... :) does anybody have that article - and could be willing to
scan it, and send it to me?

I have ordered the issue, but it takes a couple of weeks till it arrives.

I guess that subject could interest others too. What you think Paul,
would it be possible to make it available on rotaryeng site, or posted
on newsletter feed?

Cheers,
Petri

The best thing to do is copy what works. Tracy's isolator has worked fine
for years and can be tuned by changing the durometor and or the diameter of the
rubber bushing. We pretty much know the theory. No need to reinvent the wheel.

Paul Lamar