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Date: Tue, 6 Jul 2010 10:17:05 -0400
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Message-ID: <AANLkTinh6bpLyfvf1ov6dwOMgJ5fXSeCbmNBJ2voH7Dg@mail.gmail.com>
Subject: Re: [FlyRotary] mixture
From: Tracy Crook <tracy@rotaryaviation.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary=001485e0b49637e246048ab8b5fe

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Hi kevin,
   I'm going on a old memory that may be wrong but I seem to remember a
picture of your manifold that looked like the two Webber barrels dumped into
a common chamber.  If that is true, you should start over and keep the
barrels separate, i.e., one to each rotor.  Even if this is not the reason
for your mixture mismatch now it is the only way to go.

Tracy

On Mon, Jul 5, 2010 at 11:19 PM, kevin lane <n3773@comcast.net> wrote:

>  I have just started running my engine on a test stand.  currently it will
> only do 4000 rpm.  I noticed the rear rotor exhaust has turned blue.  I
> pulled the plugs and the rear lead and trail plugs were very sooty.  the
> front rotor trailing plug was clean, lead was black.  I suspect that my
> trailing ignition for the front plug may not be running correctly.  getting
> started I have been running whatever jets that came with the carb.  it
> appears I need to change them, to smaller I assume.  do I need to install a
> mixture gauge?  does it attach to the exhaust or intake?  if so, which
> pipe(s)?
>
> the facet electric pump delivers the rated 30 gals/hr [at zero psi], but my
> fuel pressure gauge only shows about 2 psi.  is it possible that I have fuel
> starvation above 4000 rpm?  the specs say that the pump has a 4-8 psi
> range.  not sure why I am seeing only 2 psi. even at idle.  the fuel lift is
> all of a few inches.  I removed the fuel pressure regulator, but no
> difference.
>
>
> KevinLane Carpentry
> www.KevinLaneCarpentry.com
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>
>

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Content-Type: text/html; charset=ISO-8859-1
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Hi kevin,<br>=A0=A0 I&#39;m going on a old memory that may be wrong but I s=
eem to remember a picture of your manifold that looked like the two Webber =
barrels dumped into a common chamber.=A0 If that is true, you should start =
over and keep the barrels separate, i.e., one to each rotor.=A0 Even if thi=
s is not the reason for your mixture mismatch now it is the only way to go.=
<br>
<br>Tracy=A0 <br><br><div class=3D"gmail_quote">On Mon, Jul 5, 2010 at 11:1=
9 PM, kevin lane <span dir=3D"ltr">&lt;<a href=3D"mailto:n3773@comcast.net"=
>n3773@comcast.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quot=
e" style=3D"margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204,=
 204); padding-left: 1ex;">






<div bgcolor=3D"#ffffff"><div class=3D"im">
<div><font face=3D"Comic Sans MS">I have just started running my engine on =
a test=20
stand.=A0 currently it will only do 4000 rpm.=A0 I noticed the rear rotor=
=20
exhaust has turned blue.=A0 I pulled the plugs and the rear lead and trail=
=20
plugs were very sooty.=A0 the front rotor trailing plug was clean, lead was=
=20
black.=A0 I suspect that my trailing ignition for the front plug may not be=
=20
running correctly.=A0 getting started I have been running whatever jets tha=
t=20
came with the carb.=A0 it appears I need to change them, to smaller I=20
assume.=A0 do I need to install a mixture gauge?=A0 does it attach to the=
=20
exhaust or intake?=A0 if so, which pipe(s)?</font></div>
<div><font face=3D"Comic Sans MS"></font>=A0</div>
</div><div><font face=3D"Comic Sans MS">the facet electric pump delivers th=
e rated 30=20
gals/hr [at zero psi], but my fuel pressure gauge only shows about 2 psi.=
=A0=20
is it possible that I have fuel starvation above 4000 rpm?=A0 the specs say=
=20
that the pump has a 4-8 psi range.=A0 not sure why I am seeing only 2 psi.=
=20
even at idle.=A0 the fuel lift is all of a few inches.=A0 I removed the=20
fuel pressure regulator, but no difference.</font></div>
<div><font face=3D"Comic Sans MS"></font>=A0</div>
<div>=A0</div>
<div><font face=3D"Comic Sans MS">KevinLane Carpentry<br><a href=3D"http://=
www.KevinLaneCarpentry.com" target=3D"_blank">www.KevinLaneCarpentry.com</a=
></font></div></div>
<br>--<br>
Homepage: =A0<a href=3D"http://www.flyrotary.com/" target=3D"_blank">http:/=
/www.flyrotary.com/</a><br>
Archive and UnSub: =A0 <a href=3D"http://mail.lancaironline.net:81/lists/fl=
yrotary/List.html" target=3D"_blank">http://mail.lancaironline.net:81/lists=
/flyrotary/List.html</a><br>
<br></blockquote></div><br>

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