X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 1 [X] Return-Path: Sender: To: lml Date: Sat, 02 Dec 2006 19:17:33 -0500 Message-ID: X-Original-Return-Path: Received: from mx1.pshift.com ([216.57.116.6] verified) by logan.com (CommuniGate Pro SMTP 5.1.3) with ESMTP id 1633013 for lml@lancaironline.net; Sat, 02 Dec 2006 16:06:47 -0500 Received-SPF: none receiver=logan.com; client-ip=216.57.116.6; envelope-from=colyncase@earthlink.net Received: from ccaselt (unverified [216.57.118.129]) by mx1.pshift.com (Vircom SMTPRS 4.35.480.0) with SMTP id for ; Sat, 2 Dec 2006 16:06:28 -0500 Received-SPF: none (mx1.pshift.com: domain of colyncase@earthlink.net does not designate any permitted senders) X-Modus-ReverseDNS: Error=0x0000232A X-Modus-BlackList: 216.57.118.129=OK;colyncase@earthlink.net=OK X-Modus-RBL: 216.57.118.129=Excluded X-Modus-Trusted: 216.57.118.129=NO X-Original-Message-ID: <141201c71655$b8a5bfd0$0302a8c0@nvidia.com> From: "colyncase on earthlink" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: New (2006) TSIO550E Lean of Peak (LOP) Operation X-Original-Date: Sat, 2 Dec 2006 13:06:21 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_140F_01C71612.A987F330" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 This is a multi-part message in MIME format. ------=_NextPart_000_140F_01C71612.A987F330 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Peak EGT always occurs at a F:A ratio of about .067... period. The FF = at that peak is based on the mass airflow, not the CR of the engine.=20 The higher CR engines are more efficient at turning avgas into HP. Walter right. =20 my question was for this specific engine (tsio-550) if you change the = compression ratio is the mass airflow in fact the same? =20 ------=_NextPart_000_140F_01C71612.A987F330 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Peak EGT=20 always occurs at a F:A ratio of about .067... period. The FF = at that=20 peak is based on the mass airflow, not the CR of the engine. =

The higher CR engines are more efficient at turning avgas into=20 HP.

Walter

right.

my question was for this specific engine (tsio-550) if you change = the=20 compression ratio is the mass airflow in fact the same? =

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