Return-Path: Received: from [24.25.9.102] (HELO ms-smtp-03-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3209814 for flyrotary@lancaironline.net; Thu, 06 May 2004 22:30:09 -0400 Received: from EDWARD (clt25-78-058.carolina.rr.com [24.25.78.58]) by ms-smtp-03-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i472U6s2017170 for ; Thu, 6 May 2004 22:30:07 -0400 (EDT) Message-ID: <001701c433db$38337f90$2402a8c0@EDWARD> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: fuel injector prices Date: Thu, 6 May 2004 22:30:10 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine > > A couple of interesting points for me here: > > 1. There's a direct corrolation between fuel PSI and volume of fuel > released. Obvious, I guess, but I hadnt thought about that. So - lowering my > PSI might get me into the right range??? > > 2. People talk about 550cc/min and 38lb injectors. I presume its a simple > conversion from cc to lbs, but the mixed units arnt helping. What are the > 550cc injectors in lbs? > > John Slade 550 cc/min = 0.1453 Gallons. So 0.1453 Gallons * 60 (minutes) = 8.718 Gallons/ hour x 6 (lbs/gallon) = 52 lbs/ hr. Or a 550 cc/min injector would flow approx 52 lbs of fuel if it flowed wide open for one hour or 52 lbs/hr. for the NA engines the stock injector is the 460 cc/min (sometimes they varied a bit around that figure) 460 cc/min = 0.1215191gallons so performing the same calculations = 7.29114 gallons/hr x 6 = 43.75 lbs/hour Ed Anderson