X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-qy0-f204.google.com ([209.85.221.204] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3688149 for flyrotary@lancaironline.net; Fri, 19 Jun 2009 09:25:00 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.221.204; envelope-from=rwstracy@gmail.com Received: by qyk42 with SMTP id 42so2242221qyk.7 for ; Fri, 19 Jun 2009 06:24:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to :content-type; bh=WGE8gt3+36KyroBlnFRE6ZyTrcp6dkZDn7XDruQYRbs=; b=ayKgoFdKq90ISdKUU8Rv3wkg+eAembQ/KgiHwvWv2UgQewgedP0YduSCAN7uS7xIU6 h2tGdrt6Eva54QdJ2jy672Uckafm904KqqfFpxh6xy+sHyF9VObNHUhvIfkkvfc4zAqy nGoABdq7NPEFeinyDDnVvQDugwonuFUOHCKKE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=jlT86MX6nlK5lSmdPXllNu76O5fDHY9y7J/0QQA1q5Lm2xCRi0rZ1Y+Xc8nBUpeMZR Fj5DAXLT8sMg3CncVo5i1QlIas32HUmY5VkTrAZUaDAIJldiWfnzn9JJZatWOgzuvBzw TF5E6mV/N9Dcrz7X7pvh0Ja4KQJqFnGPs0tEw= MIME-Version: 1.0 Sender: rwstracy@gmail.com Received: by 10.224.32.86 with SMTP id b22mr2489143qad.233.1245417864713; Fri, 19 Jun 2009 06:24:24 -0700 (PDT) In-Reply-To: References: Date: Fri, 19 Jun 2009 09:24:24 -0400 X-Google-Sender-Auth: c92e1c336ab110db Message-ID: <1b4b137c0906190624g575ef75bueb0074c63d83f53e@mail.gmail.com> Subject: Re: [FlyRotary] Re: 295cc vs 495 cc was [FlyRotary] responses to responses, not developing full power From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=001517573ed86c569d046cb371ba --001517573ed86c569d046cb371ba Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Mode 6 would handle it but that is for normal staging only. The 'injector set disabled' is a special case In which the EC2/3 does not know which se= t has been disabled and therefore can't know exactly what to do. It's up to the pilot to make the appropriate response on the mixture knob if the injectors are not the same size. Tracy On Fri, Jun 19, 2009 at 10:17 AM, Al Gietzen wrote: > When you switch the primary injectors off and secondary > > injectors on - the EC2 is still providing the same pulse duration (assumi= ng > > engine manifold pressure, etc are the same) for the almost twice as large > > secondary injectors as it did for the smaller primary injectors. Ergo, yo= u > > are feeding the engine almost twice the fuel (for the same engine > > conditions) as you did when on the primary injectors. The engine is > choking > > on too much fuel. > > > > Unless, of course, you have made the mode 6 adjustment to compensate for > the difference in the flow rates =96 or will mode 6 not handle such a big > differential. > > > > Al G > --001517573ed86c569d046cb371ba Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Mode 6 would handle it but that is for normal staging only.=A0 The 'inj= ector set=A0 disabled'=A0 is a special case In which the EC2/3 does not= know which set has been disabled and therefore can't know exactly what= to do.=A0 It's up to the pilot to make the appropriate response on the= mixture knob if the injectors are not the same size.

Tracy

On Fri, Jun 19, 2009 at 10:17 = AM, Al Gietzen <= ALVentures@cox.net> wrote:

When you switch the primary injectors off and secondary

inject= ors on - the EC2 is still providing the same pulse duration (assuming

engine manifold pressure, etc are the same) for the almost twice as large

second= ary injectors as it did for the smaller primary injectors. Ergo, you

are feeding the engine almost twice the fuel (for the same engine=

condit= ions) as you did when on the primary injectors.=A0 The engine is choking

on too much fuel.=A0

=A0

Unless, of course, you have made the mode 6 adjustment to compensate for the difference in the flo= w rates =96 or will mode 6 not handle such a big differential.<= /p>

=A0

Al G


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