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Date: Tue, 25 May 2004 16:58:07 -0600
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
From: Bill Dube <bdube@al.noaa.gov>
Subject: Re: [FlyRotary] Fuel Pump Design
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>
>2.  Install a bleed line around the pressure regulator with a small 
>metering orifice (.020-.030") that would bleed off any air that might get 
>trapped.  (This appears to be the solution the Subaru group is focusing 
>on).  This would be a full time bypass.  This seems to be the simpler solution.

         What is better than an orifice, is a larger orifice with a piece 
if wire through it. A single piece of crud can plug an orifice, but the 
orifice with the wire though it is quite difficult to plug up. They use 
this trick on expensive pressure gauges to limit surges.