X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qw-out-2122.google.com ([74.125.92.24] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3903569 for flyrotary@lancaironline.net; Wed, 28 Oct 2009 23:09:48 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.92.24; envelope-from=rwstracy@gmail.com Received: by qw-out-2122.google.com with SMTP id 5so382652qwd.25 for ; Wed, 28 Oct 2009 20:09:14 -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=UyFtPyeQeoDtu9y+/dc96rZAaFnGPo5VJAvsgVfmDIY=; b=mcDKLDhxBZEvq1Odc92jyf86Ce/2BCO5rvae+PusyaU7hJU9nF2B5/YHD91Ij0JI7v sWqARfFSWZWtP3yfaiwkLjLHiCuW+CDkNJSJGbL5gWz7yVtEZywkhaPC3DaUhRjcf3E+ 8MYuW4fv9H8fNaLwiJXG8Jqag0DIhOef+eGvg= 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=jW9243H47zEz3cVNtvluqBTKToerKog3jwAYmcUg4MvxrM0DsjO9fwzYjq5Z0lP3Ol EXhR0QlRXbvVSOW/JDfTFqVaJLySnPXaIxhVuVOD27ZPA41ujuTXUoellibuPw/FSFcf po+DbM+Td+zU3JV1BmghKcC9uQLi4jqMt3xwg= MIME-Version: 1.0 Sender: rwstracy@gmail.com Received: by 10.224.35.12 with SMTP id n12mr9678105qad.250.1256785754342; Wed, 28 Oct 2009 20:09:14 -0700 (PDT) In-Reply-To: References: Date: Wed, 28 Oct 2009 23:09:14 -0400 X-Google-Sender-Auth: 1460765b2068f4a9 Message-ID: <1b4b137c0910282009w6b9098a5k6ba1bbc5aaf4d1d0@mail.gmail.com> Subject: Re: [FlyRotary] MCT values in the 0-63 area of the EC-2 From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=00c09f93d69d72481004770a3c6c --00c09f93d69d72481004770a3c6c Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable The default values in the table are supposed to be all zeros. There is a conceptual misunderstanding about these values in your question. It is not the Data that corresponds to the manifold pressure, it is the address. The data is a correction value for the corresponding manifold pressure. The values can be from -127 to + 127 with negative values causing the mixture to be adjusted leaner and positive values richer. Does that help? Tracy On Wed, Oct 28, 2009 at 6:35 PM, Bill Bradburry w= rote: > Tracy is back! What about this question, Tracy? > > > > The below from a previous email=85 > > > > Now I have more questions. I went over and copied down the information i= n > my MAP table today. I was surprised to learn that the manifold pressures > for all addresses from 0 to 63 were set to Zero. I expected to find actu= al > manifold pressures in there. Starting with addresses 64 through 127 the > manifold pressures increase from 10.0 at address 64 in 0.5 inch increment= s > all the way to 41.8 inches at address 127. My engine is naturally > aspirated, so the manifold pressures above about 30 or 31 will never be > used. I understand that the 0 to 31 addresses are used when the RPM is > below 2500 and the manifold pressure is below 13 inches, and that the > addresses from 32 to 63 are used when the RPM is between 2500 and 3800 an= d > the manifold pressure is above 13 inches. But I still don=92t understand= how > the controller would know which address to use with no manifold pressures > entered in the table. Tracy is this is OK? Will these pressures be adde= d > when the engine is ran?? > > > > Bill B > --00c09f93d69d72481004770a3c6c Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable The default values in the table are supposed to be all zeros.=A0 There is a= conceptual misunderstanding about these values in your question.=A0 It is = not the Data that corresponds to the manifold pressure, it is the address.= =A0 The data is a correction value for the corresponding manifold pressure.= =A0 The values can be from -127 to + 127=A0 with negative values causing th= e mixture to be adjusted leaner and positive values richer.

Does that help?

Tracy

On Wed, = Oct 28, 2009 at 6:35 PM, Bill Bradburry <bbradburry@bellsouth.net> wrot= e:

=A0Tracy is back!=A0 What about this question, Tracy?

=A0

The below from a previous email=85

=A0

Now I have more questions.=A0 I went over and copied= down the information in my MAP table today.=A0 I was surprised to learn that the manifold pressures for all addresses from 0 to 63 were set to Zero.=A0 I expected to find actual manifold pressures in there.=A0 Starting with addresses 64 through 127 the manifold pressures increase from 10.0 at addre= ss 64 in 0.5 inch increments all the way to 41.8 inches at address 127.=A0 My engine is naturally aspirated, so the manifold pressures above about 30 or = 31 will never be used.=A0 I understand that the 0 to 31 addresses are used whe= n the RPM is below 2500 and the manifold pressure is below 13 inches, and tha= t the addresses from 32 to 63 are used when the RPM is between 2500 and 3800 = and the manifold pressure is above 13 inches.=A0 But I still don=92t understand how the controller would know which address to use with no manif= old pressures entered in the table.=A0 Tracy is this is OK?=A0 Will these pressures be added when the engine is ran??

=A0

Bill B


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