From: "Christian And Tamara Mcdonald" <flyrotary@lancaironline.net>
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Date: Fri, 29 Jul 2016 21:50:39 +1000
Message-ID: <CAOCgF+HtpALNacH0h_gMbFD-uuJbJ3khzo6pLjyQzS2euwnD0g@mail.gmail.com>
Subject: Re: [FlyRotary] Further testing
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Hi Steve
Just my 2 cents, I had irregular map signals so I installed a mig welding
tip for .6 wire and that sorted it out simply for me.

Cheers
Christian

On Friday, 29 July 2016, steve Izett <flyrotary@lancaironline.net> wrote:

> Hi Guys
>
> We did further testing of the Renesis today. Would really appreciate your
> heads on this.
> Last series of tests we had this major missing and noise which I think is
> fuel exploding in the exhaust.
> This happens at various RPM=E2=80=99s based on load from the adjustable p=
rop.
> With fine pitch it would spin out to just over 7000rpm before striking
> this mayhem.
> With medium pitch it would get to 6000rpm before the same symptoms.
> From memory these were both at about 22-23 inches of Hg.
> My Wideband O2 is malfunctioning at present.
> The narrowband response time appears to slow to discover what the mixture
> is doing during the episodes.
>
> Also still having trouble with the EM3. Sometimes display reads what
> appears to be an error message and at other times stops reading RPM.
> The Skyview Engine monitor has the same issue at the same RPM so appears
> directly related.
> I changed the input on the Skyview to the Standard RPM input as I
> incorrectly fed the injector pulse to the lower voltage input, but this
> made no difference.
>
> I had wondered if the secondary injectors weren=E2=80=99t getting power a=
nd as a
> consequence when it staged to all 4 injectors the trouble began.
> Using the EM3 display (staging asterisk) and switching power off to the
> secondaries I was able to ascertain that the secondaries appear to be
> functioning fine.
> I did notice that the point of staging appears to be not solid.
> This takes me back to Ed=E2=80=99s comments re damping the manifold signa=
l to the
> EC2.
> Sorry Ed, you might have had it right last week. I thought because it was
> running so smoothly up to 23 inches that it wasn=E2=80=99t a signal issue=
.
> Maybe the wavelength/timing of those pulses at ~6000rpm matches the
> manifold signal tap position!
>
> Ed, you mentioned either small orifice or accumulator. I estimate the
> volume of the signal line to be approx 18 cubic centimetres.
> My gut was that the accumulator required to damp the signal would need to
> be an order of magnitude larger. (total guess)
> So maybe 180 cc=E2=80=99s but thats half a Coke can! Seem=E2=80=99s way t=
o big.
> Ed, did I understand you right that a small fuel filter can do the trick?
> I thought they would only be about 10 cc=E2=80=99s in volume.
> I suppose if the pulses are very narrow/short maybe thats all to takes to
> damp out the pulses.
>
> Can I ask the group please. Who had trouble with manifold signal and what
> was the solution that worked best.
> Paul Lamar advocates tapping the signal from the oil injection ports.
> Has/is anyone using this solution?
>
> Thanks very much everyone.
>
> Steve Izett
> Glasair Super II RG
> Reneis 4 port EC2 EM3 RD1-C
>
>
>
>
>
>
>
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>

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Hi Steve<div>Just my 2 cents, I had irregular map signals so I installed a =
mig welding tip for .6 wire and that sorted it out simply for me.</div><div=
><br></div><div>Cheers</div><div>Christian<br><br>On Friday, 29 July 2016, =
steve Izett &lt;<a href=3D"mailto:flyrotary@lancaironline.net">flyrotary@la=
ncaironline.net</a>&gt; wrote:<br><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Guys<=
br>
<br>
We did further testing of the Renesis today. Would really appreciate your h=
eads on this.<br>
Last series of tests we had this major missing and noise which I think is f=
uel exploding in the exhaust.<br>
This happens at various RPM=E2=80=99s based on load from the adjustable pro=
p.<br>
With fine pitch it would spin out to just over 7000rpm before striking this=
 mayhem.<br>
With medium pitch it would get to 6000rpm before the same symptoms.<br>
From memory these were both at about 22-23 inches of Hg.<br>
My Wideband O2 is malfunctioning at present.<br>
The narrowband response time appears to slow to discover what the mixture i=
s doing during the episodes.<br>
<br>
Also still having trouble with the EM3. Sometimes display reads what appear=
s to be an error message and at other times stops reading RPM.<br>
The Skyview Engine monitor has the same issue at the same RPM so appears di=
rectly related.<br>
I changed the input on the Skyview to the Standard RPM input as I incorrect=
ly fed the injector pulse to the lower voltage input, but this made no diff=
erence.<br>
<br>
I had wondered if the secondary injectors weren=E2=80=99t getting power and=
 as a consequence when it staged to all 4 injectors the trouble began.<br>
Using the EM3 display (staging asterisk) and switching power off to the sec=
ondaries I was able to ascertain that the secondaries appear to be function=
ing fine.<br>
I did notice that the point of staging appears to be not solid.<br>
This takes me back to Ed=E2=80=99s comments re damping the manifold signal =
to the EC2.<br>
Sorry Ed, you might have had it right last week. I thought because it was r=
unning so smoothly up to 23 inches that it wasn=E2=80=99t a signal issue.<b=
r>
Maybe the wavelength/timing of those pulses at ~6000rpm matches the manifol=
d signal tap position!<br>
<br>
Ed, you mentioned either small orifice or accumulator. I estimate the volum=
e of the signal line to be approx 18 cubic centimetres.<br>
My gut was that the accumulator required to damp the signal would need to b=
e an order of magnitude larger. (total guess)<br>
So maybe 180 cc=E2=80=99s but thats half a Coke can! Seem=E2=80=99s way to =
big.<br>
Ed, did I understand you right that a small fuel filter can do the trick? I=
 thought they would only be about 10 cc=E2=80=99s in volume.<br>
I suppose if the pulses are very narrow/short maybe thats all to takes to d=
amp out the pulses.<br>
<br>
Can I ask the group please. Who had trouble with manifold signal and what w=
as the solution that worked best.<br>
Paul Lamar advocates tapping the signal from the oil injection ports. Has/i=
s anyone using this solution?<br>
<br>
Thanks very much everyone.<br>
<br>
Steve Izett<br>
Glasair Super II RG<br>
Reneis 4 port EC2 EM3 RD1-C<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
--<br>
Homepage:=C2=A0 <a href=3D"http://www.flyrotary.com/" target=3D"_blank">htt=
p://www.flyrotary.com/</a><br>
Archive and UnSub:=C2=A0 =C2=A0<a href=3D"http://mail.lancaironline.net:81/=
lists/flyrotary/List.html" target=3D"_blank">http://mail.lancaironline.net:=
81/lists/flyrotary/List.html</a><br>
</blockquote></div>

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