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Hi Gary,
I'm testing my PPA fuel transfer
setup, and having a problem with the sensors -- they do not shut off the Facets
when the header fuel level covers the high sensor.
My sensors are mounted inside an
access plate tube that extends up from the bottom of the header tank, so
they point upward, and the high sensor is about 3/4" from the top of the
tank.
Is that enough fuel coverage of the
sensor point? Dennis tested the sensors themslelves and said they
were ok. PPA can't test the K-controllers any more ....
Also, the controller does shut off the
Facets as they run a wing tank dry.
Any comments on the optical
sensors?
Thanks,
Terrence L235/320 N211AL
----- Original Message -----
Sent: Tuesday, September 16, 2008 10:04
AM
Subject: [LML] Re: Fuel transfer, wing to
header tank
Hey George,
You meant to indicate a transfer rate of .45 gallons per minute?
Both Facet pumps on my Lancair each move fuel at the rate of .57
gallons per minute. I have a laminated card in my console box which
lists transfer rates by minutes and by gallons, so I can easily determine how
much fuel to move either by time or by quantity. I pump from both wing
tanks at the same time which helps reduce the need for aileron trim
requirements during fuel usage. So, I am able to move, with both pumps
on, 1.14 gallons per minute (2 gallons in 3:30). I also keep a log of
fuel transferred.
It is noted that the original Facet pumps that came with the kit
transferred fuel at different rates. I replaced them when I installed
the PPAvionics fuel controller at a later date as the controller would not
sense the change in the pumps when the tanks were dry.
Gary Edwards
LNC2
Medford, Oregon
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