>Was the 'both tanks feeding a sump, with no valve'
setup the way that the Velocity factory said to plumb the system, or something
concocted by the builder?
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It’s something of a cluster Charlie.
When I presented an option of Left/Right I got hammered by
the Velocity loyals. They are all in lock-step that this is a great system.
Most of them have a cable going to a shutoff valve that in
some cases only has the ability to close the fuel system, not open it back up.
When I got the Velocity, one of the first things I did was
research the NTSB database to see what kinds of failures they were
experiencing.
The earliest case I found was a botched landing in high
cross winds. The pilot was somewhat panicky because his fuel tanks were not
draining at an even pace and he was at a point where one tank was almost dry.
He felt he had to get it down. His intended airfield had a runway that had a
good alignment with the prevailing wind but now he was faced with a crosswind
landing and let’s just say it went poorly.
I took a lot of cr@p over on
that forum for changing the system. I prefer the Left/Right tank arrangement
and have always managed my fuel that way. These guys seem to think your head
will explode with the addition of all that pilot workload.
Velocity sells the Andair selector valve but I could not
find anyone on the forum who used it. Lot’s of
exotic solutions with electric solenoid valves and the like.
I just prefer something simple and familiar …… like
the certified airplane I’m used to flying.
As far as the factory method, they remain pretty vague on
that point. You can actually find diagrams in the manual that contradict one
another.
No chance to select a single side with this arrangement. Do
you see a lector or shutoff in this diagram?