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Message-ID: <1b4b137c0707200957o4d81e68ai5a5a25a3f9128a84@mail.gmail.com>
Date: Fri, 20 Jul 2007 12:57:11 -0400
From: "Tracy Crook" <tracy@rotaryaviation.com>
Sender: rwstracy@gmail.com
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] RPM's and intake leaks
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Hi Chris, Hope you have received all the messages I sent in response to the
injector test mode problems.

I guess I should have just said it outright:  I would not recommend ANY more
engine testing until you correct any clearly evident problem of this
significance.  Further testing with a known problem is counterproductive and
will greatly complicate your troubleshooting.

Tracy


On 7/17/07, Christopher Barber <CBarber@texasattorney.net> wrote:
>
>  Went to the hangar early this afternoon (hey, it was my day off...I
> lounged around a bit this am and watched Flyboys from PPV....mediocre, but
> lots of plane stuff) and took off the revisited every orifice, recapped and
> sealed every potential for leaks.  I found two that were probable the
> cuprits.  I also ground down some old screw points on the top of the engine
> to allow a much more natural lay for the Mistral runners.
>
>
>
> Got in, and started the engine.  It was a bit tough, but if finally caught
> AND it was running COMPLETLY differently.  I was able to have it run all the
> way down to 400 RPM.....however it runs like.....uh, poorly this low.  The
> engine was surging and running very rough even when I increased the
> throttle, then I remembered that I had started to tune it with the higher
> RPM's.  So, I reset the ECU, actually, I figured to do this just after it
> started and it actually started after only a short rest (as of now, it
> really has not liked to start for a while once it is shut down).
>
>
>
> It was runny rough, but I got it into autotune mode and things started to
> smooth out.  I had it running about 15 minutes at lower RPM and began to
> worry about temps since it has been an issue.  I took it out of autotune
> mode and the H2O temp was 158 and the oil was around 173.....MUCH BETTER.
>
>
>
> As we mentioned, we have a leak in the PSRU, which seems to be getting
> worse, so I didn't want to run it too much 'till we figure the leak out.  I
> wanted to start it for an EAA sister chapter (EAA 712) meeting at my hangar
> tonight. So I cleaned the hangar a bit.  When the EAA chapter arrived and I
> had an audiance the thing would not start.  Of course. The injectors firing
> at 3000 in Mode Zero reared its head again and I am guessing it flooded the
> engine.
>
>
>
> So, even though it would not start this evening I consider it a good day
> as we seemed to get the rpms down.  Now to investigate the PSRU issue as
> well as get this thing running more smothly again.  Just one more step.
>
>
>
> All the best,
>
>
>
> Chris
>
>
>
> Cross posted in Flyrotary
>
>
>

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<div>Hi Chris, Hope you have received all the messages I sent in response to the injector test mode problems.&nbsp;&nbsp; </div>
<div>&nbsp;</div>
<div>I guess I should have just said it outright:&nbsp; I would not recommend ANY more engine testing until you correct&nbsp;any clearly evident problem of this significance.&nbsp; Further testing with a known problem is counterproductive and will greatly complicate your troubleshooting.
</div>
<div>&nbsp;</div>
<div>Tracy<br><br>&nbsp;</div>
<div><span class="gmail_quote">On 7/17/07, <b class="gmail_sendername">Christopher Barber</b> &lt;<a href="mailto:CBarber@texasattorney.net">CBarber@texasattorney.net</a>&gt; wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div bgcolor="#ffffff">
<div>
<p>Went to the hangar early this afternoon (hey, it was my day off...I lounged around a bit this am and watched Flyboys from PPV....mediocre, but lots of plane stuff) and took off the revisited every orifice, recapped and sealed every potential for leaks.&nbsp; I found two that were probable the cuprits.&nbsp; I also ground down some old screw points on the top of the engine to allow a much more natural lay for the Mistral runners.
</p>
<p>&nbsp;</p>
<p>Got in, and started the engine.&nbsp; It was a bit tough, but if finally caught AND it was running COMPLETLY differently.&nbsp; I was able to have it run all the way down to 400 RPM.....however it runs like.....uh, poorly this low.&nbsp; The engine was surging and running very rough even when I increased the throttle, then I remembered that I had started to tune it with the higher RPM&#39;s.&nbsp; So, I reset the ECU, actually, I figured to do this just after it started and it actually started after only a short rest (as of now, it really has not liked to start for a while once it is shut down).
</p>
<p>&nbsp;</p>
<p>It was runny rough, but I got it into autotune mode and things started to smooth out.&nbsp; I had it running about 15 minutes at lower RPM and began to worry about temps since it has been an issue.&nbsp; I took it out of autotune mode and the H2O temp was 158 and the oil was around 173.....MUCH BETTER.
</p>
<p>&nbsp;</p>
<p>As we mentioned, we have a leak in the PSRU, which seems to be getting worse, so I didn&#39;t want to run it too much &#39;till we figure the leak out.&nbsp; I wanted to start it for an EAA sister chapter (EAA 712) meeting at my hangar tonight. So I cleaned the hangar a bit.&nbsp; When the EAA chapter arrived and I had an audiance the thing would not start.&nbsp; Of course.&nbsp;The injectors firing at 3000 in Mode Zero reared its head again and I am guessing it flooded the engine.
</p>
<p>&nbsp;</p>
<p>So, even though it would not start this evening I consider it a good day as we seemed to get the rpms down.&nbsp; Now to investigate the PSRU issue as well as get this thing running more smothly again.&nbsp; Just one more step.
</p>
<p>&nbsp;</p>
<p>All the best,</p>
<p>&nbsp;</p>
<p>Chris</p>
<p>&nbsp;</p>
<p>Cross posted in Flyrotary</p>
<p><font face="Arial" size="2"></font>&nbsp;</p></div></div></blockquote></div><br>

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