Mailing List flyrotary@lancaironline.net Message #7855
From: Russell Duffy <13brv3@bellsouth.net>
Subject: RE: [FlyRotary] Re: surging / rough idle
Date: Thu, 6 May 2004 11:08:16 -0500
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
Rusty, were'd you come up with this theory?   True,  It takes the same amount of fuel  to make X horsepower regardless of rpm.   The injector doesn't fire as often at low rpm BUT, it stays open for a longer time (assuming the engine is making the same power).  It all comes out the same in terms of flow rate requirement of the injector. 
 
 Tracy 
 
 
Apparently, I drank away some important brain cells in my youth, and the ones that survived don't seem to retain information very long  :-)   
 
Seriously, I just focused on each intake cycle, and neglected to realize that there are more of these cycles at higher rpm.  Duh!  For the record, I now believe that I don't need these 50 lb/hr injectors, and I'm actually planning to replace them with 38 lb injectors as soon as Summit gets them in stock. 
 
Cheers,
Rusty (prop is "out for delivery")



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