round would be simplest as you can cap a piece of large diameter tubing
around 4 or 5 inch OD.
I don't think you need any baffles.
Make sure you put the mechanical pump pickup in the bottom and have that
ABOVE the mechanical pump inlet. That will keep the mechanical pump primed.
Kinsler may have some further ideas as well. it is well worth the call to
them.
Their catalog is available online and has a good deal of info in it..
'with pictures arrows and diagrams'
Dave
> -----Original Message-----
> From: owner-land-speed@autox.team.net
> [mailto:owner-land-speed@autox.team.net]On Behalf Of John L Staiger
> Sent: Friday, March 19, 2004 6:58 AM
> To: Land Speed Mail List
> Subject: Vapor Separator Tanks
>
>
> List,
>
> Recently Terry Hunt wrote to the list in response to a NOS thread. His
> comments got me to thinking abut a similar problem I was
> contemplating and I
> would like to get the informed opinions of the list. Terry
> wrote: "... I've
> been using two electric F.I. pumps the last few years to run in the gas
> class. I'm now planning to run my old BG 400 fuel pump, located
> in the back
> by the fuel tank. This pump will supply a Hilborn mechanical pump driven
> from the dry sump pump... Terry Hunt" This is roughly the same setup I
> have, This got me to thinking. in order to run a mechanical and
> an electric
> fuel pump at the same time (other than for starting purposes), one is
> probably using a Vapor Separator Tank in the middle. What is the ideal
> construction of the tank? Should it be build like a sump tank
> ...round with
> baffling to separate the air? Or can it be square and just dump
> the fuel in
> the top and pick up the engine fuel from the bottom? Also, what size is
> ideal? 1/2 gallon? One gallon?
>
> Thoughts please.
>
> John L. Staiger
>
> "...Murphy was an optimist..."
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