Michael Farb wrote:

Paul,
   I've been considering what size flywheel to install on my engine
(back to the 2 rotor).  Is there a preferred weight to use in lieu of
the massive factory piece?

   It's my understanding that due to the mass of the propellor we no
longer need a flywheel specifically for the inertia it provides, but I
am not clear on exactly what effect the flywheel may have in absorbing
torsional vibration. In other words, would there be any benefit to
retaining the O.E. flywheel if the weight it added to the installation
was not a factor?      Mike Farb

Most are running the auto transmission flex plate or
an aluminum flywheel with the separate auto transmission
rear rotor-balance weight. The prop enertia does not
directly enter into it unless you are planing on
running direct drive. If that is the case you are really
on the cutting edge (bleeding edge?).

Paul Lamar
 
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