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Date: Sat, 9 May 2009 11:27:49 -0400
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Message-ID: <1b4b137c0905090827h118aa96eg15cf369dee8d5a85@mail.gmail.com>
Subject: Re: [FlyRotary] Initial Tuning at Low RPM - surging?
From: Tracy Crook <tracy@rotaryaviation.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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OK Mike,
   If the tuning has been done correctly on mode 3 and 2, very little MAP
table tuning is required, especially on piston engines that have no
staging.  You should be able to go from high idle to WOT with only minor
adjustments of the mixture control even prior to table tuning.  If this is
not the case and you notice major tuning problems, send me a note prior to
starting mode 1 or 9 tuning.

Tracy

On Sat, May 9, 2009 at 12:09 AM, Mike Fontenot <
mikef@apexconsultingservices.com> wrote:

> Tracy,
>
> >>Large changes in the MAP table values can do that but you did not say at
> what point in the tuning procedure this turned up.  What have you done or
> tried so far?<<
>
> I was not specifically tuning, and have not started that seriously. My
> question was a general one about why surging happens in something like my
> GEO. I'm hoping to tie the trike down on Sunday and really start tuning (if
> the weather holds out).
>
> Thanks,
>
> --
> Mike
>
> ================================
> Mike Fontenot
> Apex Consulting & Services LLC
> Lakewood, Colorado
> 303 / 731-6645
> mikef AT apexconsultingservices DOT com
> ================================
>

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OK Mike,<br>=A0=A0 If the tuning has been done correctly on mode 3 and 2, v=
ery little MAP table tuning is required, especially on piston engines that =
have no staging.=A0 You should be able to go from high idle to WOT with onl=
y minor adjustments of the mixture control even prior to table tuning.=A0 I=
f this is not the case and you notice major tuning problems, send me a note=
 prior to starting mode 1 or 9 tuning.=A0 <br>
<br>Tracy<br><br><div class=3D"gmail_quote">On Sat, May 9, 2009 at 12:09 AM=
, Mike Fontenot <span dir=3D"ltr">&lt;<a href=3D"mailto:mikef@apexconsultin=
gservices.com">mikef@apexconsultingservices.com</a>&gt;</span> wrote:<br><b=
lockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rgb(204, 20=
4, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Tracy,<br><br>&gt;&gt;Large changes in the MAP table values can do that but=
 you did not say
at what point in the tuning procedure this turned up.=A0 What have you
done or tried so far?&lt;&lt;<br><br>I was not specifically tuning, and hav=
e not started that seriously. My question was a general one about why surgi=
ng happens in something like my GEO. I&#39;m hoping to tie the trike down o=
n Sunday and really start tuning (if the weather holds out).<br>

<br>Thanks,<br clear=3D"all"><br>-- <br>Mike<br><br>=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
<br><font color=3D"#888888">Mike Fontenot<br>Apex Consulting &amp; Services=
 LLC<br>Lakewood, Colorado<br>303 / 731-6645<br>mikef AT apexconsultingserv=
ices DOT com<br>

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D<br>
</font></blockquote></div><br>

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