Mailing List flyrotary@lancaironline.net Message #53169
From: Tracy <tracy@rotaryaviation.com>
Sender: <rwstracy@gmail.com>
Subject: Re: [FlyRotary] Re: intake blower update
Date: Fri, 3 Dec 2010 17:08:29 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
If your air filter & plumbing add more than 1/2 " Hg pressure drop then it should be thrown out and replaced.   If the blower doesn't add more than that, it's the same story!

But I sure want to hear how well it does work.

Tracy

On Fri, Dec 3, 2010 at 4:10 PM, Ernest Christley <echristley@nc.rr.com> wrote:
Kelly Troyer wrote:
Ernest,
    Your Manifold Pressure gage should tell you if any boost above atmospheric
pressure is being generated............
 
Kelly Troyer
*"DYKE DELTA JD2" (Eventually)*

The MP measures after the air filter, and any other restriction I, by necessity or stupidity, include in the intake system, with two rotors trying to suck a vacuum.  The blower is trying to add back some air pressure to that vacuum that is being sucked.  What is the contribution of the blower?

Another option I have is to disconnect and turn around the air filter, and cap the blower.  Then the engine will be sucking ambient air pressure, and I could use a separate gauge to measure the static pressure of the blower.  Hmm?  Maybe that is the way to go.

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