Mailing List flyrotary@lancaironline.net Message #17333
From: Bob White <bob@bob-white.com>
Subject: Re: [FlyRotary] Re: Returnless Fuel System - Fuel Cooler
Date: Wed, 16 Feb 2005 16:52:36 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>

Hi Dave,

The way my tanks are set up I only have a 1/4 inch line for the vent.  I'm concerned that it won't be big enough, especially if I have two EFI pumps running.  It would be a major hassle to install a larger line.  Do you see that as being a problem?

This is a high wing plane.  I'm going to set it up similar to Tracy's system with the left tank as the main tank, and use a Faucet pump to transfer from the right tank as needed.

Bob White

On Wed, 16 Feb 2005 18:20:22 -0500
<daveleonard@cox.net> wrote:

Bob...  don't do it.

It is so easy to return the fuel to one of the main tanks, it just cant be worth the hasstle and risk.

I return the fuel to my left tank (like Tracy).  But instead of a pump for transfer I just installed the stock fuel selector.  When running off the right tank it effectively transfers the fuel to the left.  I set a simple timer (on my engine monitor) to remind me to switch back.

Very simple, easy to install, no extra pump or wiring, no risk of heating the fuel even on the hottest days and highest altitudes, system work the way it was designed, parts readily available.

I just can't see any advantage of a returnless system.

Dave Leonard

> > > 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
> > -- > http://www.bob-white.com
> N93BD - Rotary Powered BD-4 (real soon)
> > >>  Homepage:  http://www.flyrotary.com/
> >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
> >>  Homepage:  http://www.flyrotary.com/
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