Mailing List flyrotary@lancaironline.net Message #58434
From: Bill Bradburry <bbradburry@bellsouth.net>
Subject: RE: [FlyRotary] Re: MAP drop
Date: Wed, 20 Jun 2012 23:13:03 -0400
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Ernest,

My filter gets pressure from the air entering the nostril.  I get about 0.5
inch manifold pressure above baro on takeoff.  No drop that I can see.

Bill B

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Ernest Christley
Sent: Wednesday, June 20, 2012 10:28 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: MAP drop

What I'm trying to get at is that I would expect there to be a pressure drop
in the MAP when the engine is sucking air
at 5100RPM.  I'm trying to figure out what that drop would normally be.

Mark Steitle wrote:
Yes, my setup is N/A.  When running the air filter bypass I was running
a n/a side port 20b.  Now I am running a n/a p-port 20b.

I don't really follow your second question.  I would only open the
bypass when flying above 3k agl so as to not suck in dirty air.  On Wed, Jun 20, 2012 at 8:31 PM, Ernest Christley <echristley@att.net
<mailto:echristley@att.net>> wrote:


    Are you running normally aspirated, Mark?  When you go WOT, is it
    significantly below idle?

    I'm trying to decide if my blower is doing anything positive.  At
    WOT, 5100RPM, I'm getting 98% of what the barometer is
    reading.

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