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From: "Alain Ouellet" <aouellet@icecanada.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Re: Injector disable swtich orientation was [FlyRotary] Re: It is ALIVE!!! First Start in Houston
Date: Fri, 1 Jun 2007 11:12:14 -0400
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Marv,

That makes real senses. They are enable switches and are used to turn on the
injector banks. Really like the logic and easy to grasp. On normal use
switch the primary and secondary injectors on. In case or roughness check by
alternating between them. That's the same thinking as with the mag switches
on the Lycomings and Continentals.

Still use the same training everyone received, so go for it guys.

Alain
  -----Original Message-----
  From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On
Behalf Of marv@lancair.net
  Sent: June 1, 2007 9:51 AM
  To: Rotary motors in aircraft
  Subject: [FlyRotary] Re: Injector disable swtich orientation was
[FlyRotary] Re: It is ALIVE!!! First Start in Houston


  I dunno, Ed.. I think the real issue is one of nomenclature.  The property
we typically try to control with a switch is the provision of power to a
specific device.  In this instance, however, the effect that has been named
(ie, to disable the injectors) requires an inverted result from a power
perspective to achieve the named function.  It is no wonder that one would
assume that you need to throw the switch upward to "turn on" the disable
function.  If you look at it a different way, if the name of the function
doubled as the "on" indicator, then placing the names above the switches
would serve both pruposes... in the case of disabling the injectors,
flipping the switch upward would, in fact, disable them.  However, in the
wiring behind the panel that switch would have to be wired to only allow
power through itself when in the down, ie, the "not disabled", position.
Seems to me the easiest solution is to stop thinking in terms of disabling
the injectors (basically an inverse function) and to simply consider these
switches and their functions in the normal sense by calling them "Injectors
Primary" and "Injectors Secondary" and labelling them "on" above the
switches and "off" below.

   That's my 2c.

     <Marv>


  "Ed Anderson" <eanderson@carolina.rr.com>:
  """
  Mike, I believe the "problem" was in the orientation of the injector
disable
  switches in the panel.
  """

--

Homepage:  http://www.flyrotary.com/

Archive and UnSub:
http://mail.lancaironline.net:81/lists/flyrotary/List.html

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.6000.16441" name=3DGENERATOR></HEAD>
<BODY>
<DIV><SPAN class=3D296595014-01062007><FONT face=3DArial color=3D#0000ff =

size=3D2>Marv,</FONT></SPAN></DIV>
<DIV><SPAN class=3D296595014-01062007><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D296595014-01062007><FONT face=3DArial color=3D#0000ff =
size=3D2>That=20
makes real senses. They are enable switches and are used to turn on the =
injector=20
banks. Really like the logic and easy to grasp. </FONT></SPAN><SPAN=20
class=3D296595014-01062007><FONT face=3DArial color=3D#0000ff =
size=3D2>On normal use=20
switch the primary and secondary injectors on. In case or roughness =
check by=20
alternating between them. That's the same thinking as with the mag =
switches on=20
the Lycomings and Continentals.</FONT></SPAN></DIV>
<DIV><SPAN class=3D296595014-01062007><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D296595014-01062007><FONT face=3DArial color=3D#0000ff =
size=3D2>Still=20
use the same training everyone received, so go for it =
guys.</FONT></SPAN></DIV>
<DIV><SPAN class=3D296595014-01062007><FONT face=3DArial color=3D#0000ff =

size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D296595014-01062007><FONT face=3DArial color=3D#0000ff =

size=3D2>Alain</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
  size=3D2>-----Original Message-----<BR><B>From:</B> Rotary motors in =
aircraft=20
  [mailto:flyrotary@lancaironline.net]<B>On Behalf Of=20
  </B>marv@lancair.net<BR><B>Sent:</B> June 1, 2007 9:51 =
AM<BR><B>To:</B> Rotary=20
  motors in aircraft<BR><B>Subject:</B> [FlyRotary] Re: Injector disable =
swtich=20
  orientation was [FlyRotary] Re: It is ALIVE!!! First Start in=20
  Houston<BR><BR></FONT></DIV>
  <DIV id=3D_htmlarea_default_style_=20
  style=3D"FONT: 10pt arial,helvetica,sans-serif">I dunno, Ed.. I think =
the real=20
  issue is one of nomenclature.&nbsp; The property we typically try to =
control=20
  with a switch is the provision of power to a specific device.&nbsp; In =
this=20
  instance, however, the effect that has been named (ie, to disable the=20
  injectors) requires an inverted result from a power perspective to =
achieve the=20
  named function.&nbsp; It is no wonder that one would assume that you =
need to=20
  throw the switch upward to "turn on" the disable function.&nbsp; If =
you look=20
  at it a different way, if the name of the function doubled as the "on" =

  indicator, then placing the names above the switches would serve both=20
  pruposes... in the case of disabling the injectors, flipping the =
switch upward=20
  would, in fact, disable them.&nbsp; However, in the wiring behind the =
panel=20
  that switch would have to be wired to only allow power through itself =
when in=20
  the down, ie, the "not disabled", position.&nbsp; Seems to me the =
easiest=20
  solution is to stop thinking in terms of disabling the injectors =
(basically an=20
  inverse function) and to simply consider these switches and their =
functions in=20
  the normal sense by calling them "Injectors Primary" and "Injectors =
Secondary"=20
  and labelling them "on" above the switches and "off" below.=20
  <BR><BR>&nbsp;That's my 2c.<BR><BR>&nbsp;&nbsp; =
&lt;Marv&gt;<BR><BR><BR>"Ed=20
  Anderson" &lt;eanderson@carolina.rr.com&gt;:<BR>"""<BR>Mike, I believe =
the=20
  "problem" was in the orientation of the injector disable <BR>switches =
in the=20
  panel.<BR>"""</DIV>
  <P><PRE>--

Homepage:  http://www.flyrotary.com/

Archive and UnSub:   =
http://mail.lancaironline.net:81/lists/flyrotary/List.html</PRE></BLOCKQU=
OTE></BODY></HTML>

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