Neil A. Kruiswyk wrote:

I agree with Jeff.  The more infomation the better.

Lancair 235 and 320's have a header tank of about 11 gals.  Some builders
choose not to install them.  I did.  From that, 3/8" AL lines to the fuel
cutoff valve which is mounted in such a way that it is virtually impossible
for me to climb in with it in the "off" possition.  I can turn it off when
I'm in there.  AL line through the firewall via an AN bulkhead fitting to a
very large cartrage filter/colator.

    From there, #10 601 SS braided hose to twin, parallel fuel pumps.  One
is powered from the ingition switch, the second from a switch on the panel
(Primary pump and backup).  Both pumps have built-in one-way check valves so
plumbing is simple.      Braided line to the fuel rail, presure regulator
and then braided line back into the header tank.  All #6 AN fittings
throughout.

    The wing tanks fill the header by two separate lines and separate
transfer pumps on separate switches.  3 separate fuel level indicators.
Fuel presure indicator with a low presure light.

Neil

Neil-fuel-pumps3.jpg
 
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