> > I can maintain level flight in the pattern with 3200 rpm, but that is
near
> > sea level (1600 MSL)  which is of course not the same conditions
> > that Chuck was faced with.  So even though the single rotor was not able
> to maintain
> > flight, you might consider that it kept him airborn long enough for
other
> > alternatives.
> Interesting. Perhaps thats another argument for a turbo...
>
>

A interesting consideration,  a one rotor running a turbo may indeed provide
more power (or it may not have sufficient exhaust gas to produce boost given
that the turbin was sized for a two rotor exhaust flow).  However, the odds
are great that if an apex seal has failed that fragments in the exhaust will
also take out the turbo turbine.  An unbalanced turbin wheel have been know
to actually tear through the cast iron turbin housing as almost impossible
as that would seem

Ed  Anderson.