The early Hiller H-23's used engine oil in there transmissions and had all
kinds of trouble that was cured by going to a separate oil system for the
transmission.  Don't know if that applies here or not.

Bob Darrah


----- Original Message -----
From: "ronald GOWAN" <rongowan@yahoo.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, January 29, 2004 9:04 PM
Subject: [FlyRotary] Re: oil supply for Ross


> I flew the Ross PSRU 200 hours on my Long EZ (rotary)
> and after 2 failures I am installing a Marcotte PSRU.
> Ross recommended using engine oil and Marcotte says to
> use gearbox oil that requires a reservoir.  I will be
> going with Marcotte's recommendation.  I feel the plus
> is I will be using clean gear oil that is formulated
> for gearboxes not hot dirty engine oil.  The BIG guys
> (airliners) use separate oil systems for their
> accessories.  There are airplanes flying with the Ross
> system.  To each is their own.
> >
> > >Before drilling into you engine for oil you may
> > want
> > >to consider what Guy Marcotte recommends.  He said
> > to
> > >have a reservoir with gear oil to lubricate the
> > PSRU.