X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost03.isp.att.net ([204.127.217.103] verified) by logan.com (CommuniGate Pro SMTP 6.0c1) with ESMTP id 5747938 for flyrotary@lancaironline.net; Thu, 06 Sep 2012 13:39:58 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.217.103; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-110-179.mco.bellsouth.net[98.85.110.179]) by isp.att.net (frfwmhc03) with SMTP id <20120906173921H0300qkpq9e>; Thu, 6 Sep 2012 17:39:21 +0000 X-Originating-IP: [98.85.110.179] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: Intermittent hiccup Date: Thu, 6 Sep 2012 13:39:24 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0018_01CD8C35.07566430" X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 Thread-Index: Ac2MU2ituT+b4cSJSsibznIhhUaszAAAu5+g This is a multi-part message in MIME format. ------=_NextPart_000_0018_01CD8C35.07566430 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I had the injectors cleaned and flow tested prior to installing them, but since I don't know what is causing this problem, I am willing to consider anything. Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ernest Chrisltey Sent: Thursday, September 06, 2012 1:16 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Intermittent hiccup On 09/06/2012 09:21 AM, Bill Bradburry wrote: Do you think that I could have an intake leak that is causing this fluctuation? This makes no sense to me. How could it be fluctuating?? Bill B How much faith do you have in the quality of your injectors? I noticed from my run logs that I sometimes get an AFR that drops out the bottom. It will last for a second or two, and then goes away for 30 to 45 seconds. It only happens when the secondaries come online, and was much worse when I had the computer configured for a higher number of squirts, eg. they opened twice as often for half the time. I can definitely see a 'hiccup' in the log graphs. I'm having an inclination to blame it on an injector getting stuck open, and momentarily flooding the engine . ------=_NextPart_000_0018_01CD8C35.07566430 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I had the injectors cleaned and = flow tested prior to installing them, but since I don’t know what is = causing this problem, I am willing to consider = anything.

Bill B

From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ernest Chrisltey
Sent: Thursday, September = 06, 2012 1:16 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Intermittent hiccup

On 09/06/2012 09:21 AM, Bill Bradburry wrote:

Do you think that I could have an intake leak that is = causing this fluctuation? This makes no sense to me. How could it be = fluctuating??

Bill = B

How much faith do you have = in the quality of your injectors?

I noticed from my run logs that I sometimes get an AFR that drops out = the bottom. It will last for a second or two, and then goes away for = 30 to 45 seconds. It only happens when the secondaries come online, and was = much worse when I had the computer configured for a higher number of squirts, = eg. they opened twice as often for half the time. I can definitely see = a 'hiccup' in the log graphs. I'm having an inclination to blame it = on an injector getting stuck open, and momentarily flooding the engine . =

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