X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 11 Jan 2008 09:50:42 -0500 Message-ID: X-Original-Return-Path: Received: from elasmtp-scoter.atl.sa.earthlink.net ([209.86.89.67] verified) by logan.com (CommuniGate Pro SMTP 5.2c4) with ESMTP id 2639913 for lml@lancaironline.net; Thu, 10 Jan 2008 17:30:48 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.67; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=YJMqI6uTl3lI8dnstvijIwbhfcCAMtJSdaD3xx0uVvxD3k2+5kwuovECW1j5xHcy; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [216.57.118.89] (helo=ccaselt2) by elasmtp-scoter.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1JD5ub-0005aG-AV for lml@lancaironline.net; Thu, 10 Jan 2008 17:30:09 -0500 X-Original-Message-ID: <01a901c853d8$5b82cfc0$0202a8c0@nvidia.com> From: "Colyn Case on earthlink" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: One mag, One electronic ignition X-Original-Date: Thu, 10 Jan 2008 17:30:08 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_01A6_01C853AE.72463DC0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da9408dd553916d6631898f62581da824a5ca350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 216.57.118.89 This is a multi-part message in MIME format. ------=_NextPart_000_01A6_01C853AE.72463DC0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Walter, hard data with numbers would be harder, but that's a surprising data = point. I would be interested to know if there is any theoretical = explanation for why a 2 degree timing change might cause a 10 degree = theta-pp change. That would suggest that flame-front moves faster btdc = than atdc, by a lot. It would also suggest that the impact of mixture = changes on theta-pp is amplified in a similar way. Lastly, it would = suggest that an EI running at the same timing as mags may be damaging. Colyn ------=_NextPart_000_01A6_01C853AE.72463DC0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Walter,
    hard data with = numbers would be=20 harder, but that's a surprising data point.
 
    I would be = interested to know if=20 there is any theoretical explanation for why a 2 degree timing change = might=20 cause a 10 degree theta-pp change.  That would suggest that = flame-front=20 moves faster btdc than atdc, by a lot.   It would also suggest = that=20 the impact of mixture changes on theta-pp is amplified in a similar = way. =20 Lastly, it would suggest that an EI running at the same timing as mags = may be=20 damaging.
 
Colyn
 
 
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