Mailing List flyrotary@lancaironline.net Message #17374
From: Bob White <bob@bob-white.com>
Subject: Re: [FlyRotary] Re: Returnless Fuel System - Fuel Cooler
Date: Thu, 17 Feb 2005 07:28:48 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>

Hi Jim,

Todd's system is a "quasi" returnless system.  The fuel is returned to the input of the fuel pump instead of the tank.  Without the cooler, much of the same fuel would circulate thru the fuel rail again and agin picking up heat.  To see Todd's diagram and description go to:

http://www.rotarywiki.com/ and search for "returnless".

Bob White


On Wed, 16 Feb 2005 23:25:06 -0600
Jim Sower <canarder@frontiernet.net> wrote:

But I thought the purpose of the cooler was to cool the *return* fuel.  If it's a one-way system, how does the fuel get hot enough to need cooling?
What am I missing here? ... Jim S.

Bob White wrote:

>Todd,
>
>I'm going to build a returnless system based on your design.  I found >this fuel cooler at Jeg's for about $40.  Jeg's P/N 771-1009.  The >finned area is 4.5 X 5 X 7/8 (inch), which I think is a little bigger >than the one you made.
>
>http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=3532&prmenbr=361
>
>I'm sure it's nicer looking than anything I could build myself.  I'll >post pictures of my alternator bracket one of these days to prove it.
>
>Bob White
>
>  >

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