From: "DaveLeonard" <daveleonard@cox.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Pressure Reduction Was Re: [FlyRotary] Re: Some Taxi testing today. With oil leak.
Date: Sun, 13 Jun 2004 23:39:29 -0700
Message-ID: <PIEMJLCHGPKMFMDHBKMLCEGOCCAA.daveleonard@cox.net>
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Ed, thanks, that's good input.  However, remember that the pressure drop
will depend on the flow rate.  After taking your lead, I looked at Corky's
book and read his discussion.  He recommends a .055-.065 restriction.  That
is quite small.  I decided to try a 5/32 hole today with no improvement in
leak.  Then I just poured some oil in the top of the turbo and got a leak,
so it is going back to the "re-builder" and my first flight is delayed
another few weeks.

At least it was fun to get the tail up on the runway.  :)

Dave Leonard


____________________________________


Dave, a calculator I found on the Web indicated that with oil going from a
3/8" dia (AN-6) through a 1/8" orifice would reduce the pressure by approx
40 psi.  So if your engine is putting out 70-80 psi that would bring it down
to the 30-40psi range which should be acceptable.

Ed

Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC


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