My return line is about an inch above the fuel pick ups.  Low.  The idea is
give the fuel time to cool and to not be creating fuel vapors in the wing.
The fuel will  get back to the tank with the higher fuel pressures coming
off the feed rail.  This is a high wing install and not flying.

Barny
MGDQ 20bt



----- Original Message -----
From: Dale Rogers <rogersda@cox.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Tuesday, June 29, 2004 12:34 PM
Subject: [FlyRotary] Re: Fuel System Question


> Hi All,
>
> > From: "Ron Milligan" <ronmilligan@cox.net>
> > Date: 2004/06/29 Tue AM 01:01:22 EDT
> > To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> > Subject: [FlyRotary] Fuel System Question
> >
> >...  My
> > question is, if I plumb the transfer line (one tank to the other) into
the
> > fuel return line (coming from the engine) will the facet fuel pump have
> > enough pressure to over come the returning fuel?  Is the returning fuel
> > under any pressure at all or just flowing back to the tank?
>
>     Let's look at this logically.  The only time you'll
> have fuel returning to the tank is when the engine is
> running (or a few seconds after shutdown).  The fuel pump
> is creating a negative pressure situation inside the tank
> by removing fuel.  The engine is burning some of the fuel
> being pumped out of the tank, so there will always be less
> fuel coming back than is being pumped out. Therefore, there
> should never be a head pressure against the return line -
> unless one positions the return outlet below the level of
> fuel.  Put the end of your return line near top center and
> you should never have a problem.
>
> Regards,
> Dale R.
> COZY MkIV-R13B #1254
>
>
>
>
>
>
>
> >>  Homepage:  http://www.flyrotary.com/
> >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
>
>
> _____________________________________________________
> This message scanned for viruses by CoreComm
>