Mailing List flyrotary@lancaironline.net Message #58431
From: Charlie England <ceengland@bellsouth.net>
Subject: Re: [FlyRotary] Re: MAP drop
Date: Wed, 20 Jun 2012 21:26:22 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Easy to test; just pull the hose off the throttle body & bypass the blower.

On 06/20/2012 08:31 PM, Ernest Christley 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.



Mark Steitle wrote:
Yes, .1" to .2"

On Wed, Jun 20, 2012 at 8:03 PM, Ernest Christley<echristley@att.net
<mailto:echristley@att.net>>  wrote:

     Removing the filter from the intake only increased the MAP by .1"?

     Mark Steitle wrote:
     >  Ernest,
     >
     >  My first intake utilized an air-filter bypass, or "ram air" as I liked
     >  to call it.  When open, it would only produce .1 to .2" MAP in flight.
     >   Hardly worth the effort.
     >
     >  Mark S.
     >
     >  On Wed, Jun 20, 2012 at 7:54 PM, Ernest Christley
     <echristley@att.net<mailto:echristley@att.net>
     >  <mailto:echristley@att.net<mailto:echristley@att.net>>>  wrote:
     >
     >      Assuming you have an air filter installed, what sort of MAP
     drop can
     >      you expect at around 5000RPM with the throttle wide
     >      open?
     >
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