Return-Path: <marv@lancaironline.net>
Received: from [65.33.167.98] (account marv@lancaironline.net)
  by logan.com (CommuniGate Pro WebUser 4.1.8)
  with HTTP id 2942429 for flyrotary@lancaironline.net; Wed, 21 Jan 2004 16:10:58 -0500
From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [FlyRotary] fuel lines
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
X-Mailer: CommuniGate Pro WebUser Interface v.4.1.8
Date: Wed, 21 Jan 2004 16:10:58 -0500
Message-ID: <web-2942429@logan.com>
In-Reply-To: <list-2942204@logan.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 8bit

Scott Stout <squiggles@yahoo.com> wrote:

>>>For a 13b NA,

What size fuel lines are commonly used for forward of the fuel pumps?  And 
prior to the fuel pumps? <<<

I'm sure that using -4 lines everywhere would provide more than enough flow 
capability.  It is best to use a larger line on the suction side, so I'd opt 
for -6 going to the pumps and -4 out of them.  On the Eagle 540 I'm working on 
we have -8 lines going to the pumps, a -6 line from the pumps, through the 
selector & out to the fuel rails, and -4 return lines.  In ground testing I 
have seen flow through the system approaching 50gph (measured 48.8), way more 
flow than you'd even need for a 13B.  Checking the fuel flow gauges for 
accuracy we ran all fuel through the transducers, fuel rails, and back through 
the return into a container to time it, and that amount of flow was able to 
pass through the -4 returns.

     <Marv>