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Subject: Re: [LML] Re: Fuel flow
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Angier,

The VM1000 sensors all use shielded wires as Grayhawk mentions and are all =
rock solid.=20


-----Original Message-----
From: Sky2high <Sky2high@aol.com>
To: lml <lml@lancaironline.net>
Sent: Wed, Jun 5, 2013 2:25 pm
Subject: [LML] Re: Fuel flow



Angier,
=20
The wires from the sensor should be shielded (ground connected at one end o=
f shield).
=20
Grayhawk
=20

In a message dated 6/5/2013 2:14:42 P.M. Central Daylight Time, N4ZQ@VERIZO=
N.NET writes:
The 550   mile flight this morning from KBVY-KRKD-KEPM-KBVY was crystal cle=
ar VFR with   195kts TAS, 5500ft, 24"MP, 2400RPM, 8.2GPH, 25=C2=BALOP
and 22.5MPG...not too   shabby for this little pip-sqweak of a plane.=20

The good news is that my   continuing issue with erratic MVP-50 fuel flow r=
eadings
has now been   identified but the solution will be a real pain to fix. Turn=
ing off the ALT   instantly caused FF readings to become rock solid! Go fig=
ure.
I'll have to   remove the cowl in order to refresh my aging memory on how t=
he ALT output lead   is plumbed but at some point it must be too close to t=
he FF cable. After the   fact it sounds like common sense but don't run any=
 sensor wires aft from the   engine compartment in the same wire bundle whi=
ch includes the ALT lead. Short   of relocating wires, do we have an electr=
ical wizard here with a more elegant   solution? I suppose that any time I =
want to see accurate fuel data, I could   simply shut off the ALT for a few=
 seconds. :-)

Angier   Ames
N4ZQ
35hrs
  =20
--
For archives and unsub   http://mail.lancaironline.net:81/lists/lml/List.ht=
ml



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<font color=3D'black' size=3D'2' face=3D'Arial, Helvetica, sans-serif'>
<div><font face=3D"Arial, Helvetica, sans-serif" style=3D"background-color:=
 transparent;">Angier,</font></div>

<div>&nbsp;</div>

<div>The VM1000 sensors all use shielded wires as Grayhawk mentions and are=
 all rock solid. </div>

<div></div>

<div></div>

<div style=3D"color: black; font-family: arial,helvetica; font-size: 10pt;"=
>-----Original Message-----<br>
From: Sky2high &lt;Sky2high@aol.com&gt;<br>
To: lml &lt;lml@lancaironline.net&gt;<br>
Sent: Wed, Jun 5, 2013 2:25 pm<br>
Subject: [LML] Re: Fuel flow<br>
<br>




<div id=3D"AOLMsgPart_1_096d4759-1e05-4a85-9173-90ecacd695c1">





<div class=3D"aolReplacedBody" style=3D"color: rgb(0, 0, 0); font-family: A=
rial; font-size: 10pt;" leftmargin=3D"7" topmargin=3D"7" rightmargin=3D"7" =
bottommargin=3D"7"><font color=3D"#000000" face=3D"Arial" size=3D"2">

<div>Angier,</div>


<div>&nbsp;</div>


<div>The wires from the sensor should be shielded (ground connected at one =
end=20
of shield).</div>


<div>&nbsp;</div>


<div>Grayhawk</div>


<div>&nbsp;</div>


<div>

<div>In a message dated 6/5/2013 2:14:42 P.M. Central Daylight Time,=20
<a href=3D"mailto:N4ZQ@VERIZON.NET">N4ZQ@VERIZON.NET</a> writes:</div>

<blockquote style=3D"padding-left: 5px; margin-left: 5px; border-left-color=
: blue; border-left-width: 2px; border-left-style: solid;"><font color=3D"#=
000000" face=3D"Arial" size=3D"2" style=3D"background-color: transparent;">=
The 550=20
  mile flight this morning from KBVY-KRKD-KEPM-KBVY was crystal clear VFR w=
ith=20
  195kts TAS, 5500ft, 24"MP, 2400RPM, 8.2GPH, 25=C2=BALOP<br>
and 22.5MPG...not too=20
  shabby for this little pip-sqweak of a plane. <br>
<br>
The good news is that my=20
  continuing issue with erratic MVP-50 fuel flow readings<br>
has now been=20
  identified but the solution will be a real pain to fix. Turning off the A=
LT=20
  instantly caused FF readings to become rock solid! Go figure.<br>
I'll have to=20
  remove the cowl in order to refresh my aging memory on how the ALT output=
 lead=20
  is plumbed but at some point it must be too close to the FF cable. After =
the=20
  fact it sounds like common sense but don't run any sensor wires aft from =
the=20
  engine compartment in the same wire bundle which includes the ALT lead. S=
hort=20
  of relocating wires, do we have an electrical wizard here with a more ele=
gant=20
  solution? I suppose that any time I want to see accurate fuel data, I cou=
ld=20
  simply shut off the ALT for a few seconds. :-)<br>
<br>
Angier=20
  Ames<br>
N4ZQ<br>
35hrs<br>
&nbsp;&nbsp; <br>
--<br>
For archives and unsub=20
  <a href=3D"http://mail.lancaironline.net:81/lists/lml/List.html" target=
=3D"_blank">http://mail.lancaironline.net:81/lists/lml/List.html</a></font>=
</blockquote></div>
</font>
</div>




</div>
</div>
</font>
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