Mailing List flyrotary@lancaironline.net Message #7873
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Re: [FlyRotary] Re: fuel injector prices
Date: Thu, 6 May 2004 22:30:10 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
>
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


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