efi fuel tank baffle

[Watson, Bill]

Well, I've been thru this same question; multiple pumps, flapper doors,
sump 
on bottom, surge tank, and have come up with what I consider to be the
ideal 
solution.. see what you think.  It has two non-moving baffles.  I'll try
to 
draw it below, bear with me;
---------------------------------------------------------
|                                 ****                  |
|                                *                      |
|                               *                       |
|                               *                     * |
|                         *     *                     * |
|                     **    *   *                ****** |
|                  **         **            *****       |
|            ****      **    P      ********            |
|    *********        *  *       **                     |
|    *                *     **                          |
|    *               *                                  |
|                    *                                  |
|                    *                                  |
|                ****                                   |
---------------------------------------------------------
This is a top view, the top of the screen is 'forward'.  'P' is the pump
location.  This cheesy plot above doesn't show some of the good details,
but 
I hope we can see the idea.  Connect the 'two sets of dots' with a china
pencil on your screen.  The concept is that during Turns, Accels or
decels, 
fuel is directed to the pump from these, say, 6" tall baffles.  The
baffles 
do wrap around the pump more than shown, (quite a bit, but I couldn't
easily 
show it) to keep fuel from just running by the pump.  Baffles do NOT go
all 
the way to each side, allowing fuel to equilibrate in depth between 
maneuvers.  This design allows a in-tank pump (which I consider 
to be quieter) and in my case, I have two side-by-side; running only one
most 
all of the time when fuel reqt's are low, then the DFI turns on a second
pump 
under specific boost conditions where one pump just won't cut it.  This
way 
you can buy cheaper, low flow pumps, have the convenience of swapping
wires 
if the pump dies to get home, and not have to buy the expensive mongo
pump 
for the 15 seconds a day you actually need the flow.  PS, port the
return 
line to the pump area too.

Hope this helps, it sure helped my project.

Bill