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Jim Sower wrote:
My own (personal) recommendation is:
Large (>1/2") gravity feed from Right ("supply") strake to Sump;
Sump feeds engine; return from rail to Right strake;
Have a facet pump that transfers fuel from Left ("transfer") strake to Right;
Sump vent is capped off (and only uncapped to initially fill the sump);
ONLY fluid path into sump is from "supply" tank;
"Transfer" tank feeds ONLY the "supply" tank.
Dirt simple, as reliable as it can be, does require some fuel management (which if I can't handle, I shouldn't be flying unsupervised :o). Simple warnings and other simple gizmos can assure more timely fuel management.
Jim, this is exactly the system I have been thinking of except for the sump to tank vent. Why do you suggest not venting the sump? It seems to me that any gasses or vapor that do get in the sump will eventually displace the fuel.
Tim Andres
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