From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [FlyRotary] fuel pump suction?
To: flyrotary
Date: Mon, 05 May 2003 08:47:24 -0400
Message-ID: <web-2333542@logan.com>
In-Reply-To: <002d01c312ff$fb6eaa00$1702a8c0@WorkGroup>
MIME-Version: 1.0
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 8bit

Posted for "Ed Anderson" <eanderson@carolina.rr.com>:

Hi Rusty,

      As you already know, the pumps are recommended to be mounted low and 
that 
is where I have mine.   However, as I have mentioned in previous messages, 
they appear to have great ability to pull fuel up hill.  I pulled fuel from a 
plastic marine fuel tank sitting on the ground (approx 24" uphill) and in fact 
collapsed the tank when I once forgot to open its vent.  This is without the 
lines being primed with fuel. 

     I suspect if there would be any problem (and there may not be) it would 
be 
getting the line "primed" with fuel up to the pumps intake.  If you are going 
to have a boost pump (highly recommended if your RV-3 is using wing tanks) 
then you could use it to "prime" the lines with fuel.  Once there is fuel to 
the pumps inlet, I think they would maintain the fuel in the line until shut 
down.  Of course, you might scratch your head a bit more and find room for the 
lower {:>)

By the way are you using a fuselage tank and wing tanks?

Ed Anderson