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From: "Clark Baker" <bakercdb@gmail.com>
X-Original-To: "Lancair Mailing List" <lml@lancaironline.net>
Subject: Fuel Transfer
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Terrence,
You might look at the PP Avionics fuel controller.  It automatically shuts
off the pump and indicates when a tank is pumped dry by sensing the change
in the current draw (I don't remember for sure).  Very slick unit and used
by several Lancair owners, including myself.  I happen to use a Grand Rapid=
s
Technologies header tank fuel probe with hi/lo outputs to drive the sensing
versus the standard optical probes.

http://ppavionics.com/XFR.htm

Regards,
Clark Baker


On 4/18/06, terrence o'neill <troneill@charter.net> wrote:
>
>  To those who've been there-done that on early Lancairs -- request your
> comments. I want a minimum-management on-off fuel supply.
> For my L235 w/ IO320, I'm now running the fuel line from each wing tank
> through a  filter on each Facet pump, then from each pump -- both into an
> open Tee, up to the header tank --
> Control of the Facet wingtank pumps' is on-off with an
> optical level-sensor in the header,
> to break or complete the plus-circuit 12VDC to each/both tanks'
> power-on/off switches.
> Left and right tank Facet pumps individual switches are normally left on,
> and powered when a/c master is on.   A red 'pumping' light is in the wing
> tank pumps' power circuit, cycles on and off as sensor demands fuel for t=
he
> header.   When light stays on, attention is called to the
> How can power to the L and R wing tank Facet pumps automatically switch
> off when the wing tanks are dry?
>

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<div>Terrence,</div>
<div>You might look at the PP Avionics fuel controller.&nbsp; It automatica=
lly shuts off the pump and indicates when a tank is pumped dry by sensing t=
he change in the current draw (I&nbsp;don't&nbsp;remember for sure).&nbsp; =
Very slick unit and used by several Lancair owners, including myself.&nbsp;=
 I happen to use a Grand Rapids Technologies header tank fuel probe with hi=
/lo outputs&nbsp;to drive the sensing versus the standard optical probes.
</div>
<div>&nbsp;</div>
<div><a href=3D"http://ppavionics.com/XFR.htm">http://ppavionics.com/XFR.ht=
m</a></div>
<div>&nbsp;</div>
<div>Regards,</div>
<div>Clark Baker<br><br>&nbsp;</div>
<div><span class=3D"gmail_quote">On 4/18/06, <b class=3D"gmail_sendername">=
terrence o'neill</b> &lt;<a href=3D"mailto:troneill@charter.net">troneill@c=
harter.net</a>&gt; wrote:</span>
<blockquote class=3D"gmail_quote" style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0=
px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div style=3D"DIRECTION: ltr">
<div><font face=3D"MS Reference Sans Serif" size=3D"2">To those who've been=
 there-done that on early Lancairs -- request your comments. I want a minim=
um-management on-off fuel supply.</font></div>
<div><font face=3D"MS Reference Sans Serif" size=3D"2">For my L235 w/ IO320=
, I'm now running the fuel line from each wing tank through&nbsp;a&nbsp; fi=
lter&nbsp;on each Facet&nbsp;pump, then from each pump -- both into an open=
 Tee, up to the header tank --
</font></div>
<div><font face=3D"MS Reference Sans Serif" size=3D"2">Control of the Facet=
 wingtank pumps' is on-off with an optical&nbsp;level-sensor in the header,=
 &nbsp; </font></div>
<div><font face=3D"MS Reference Sans Serif" size=3D"2">to break or&nbsp;com=
plete the plus-circuit 12VDC to&nbsp;each/both tanks' power-on/off switches=
.&nbsp;</font></div>
<div><font face=3D"MS Reference Sans Serif" size=3D"2">Left and right tank =
Facet pumps individual switches are normally left on, and powered when a/c =
master is on.&nbsp; &nbsp;A red 'pumping' light is in the wing tank pumps' =
power circuit, cycles on and off&nbsp;as sensor demands fuel for the header=
.&nbsp; &nbsp;When&nbsp;light stays on, attention is called to the
</font></div>
<div><font face=3D"MS Reference Sans Serif" size=3D"2">How can&nbsp;power t=
o the L&nbsp;and R wing tank Facet pumps&nbsp;automatically switch off&nbsp=
;when the wing tanks are dry?&nbsp;&nbsp;&nbsp;</font></div></div></blockqu=
ote></div>

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