Return-Path: Sender: (Marvin Kaye) To: lml Date: Wed, 12 Mar 2003 11:31:14 -0500 Message-ID: X-Original-Return-Path: Received: from mtiwmhc11.worldnet.att.net ([204.127.131.115] verified) by logan.com (CommuniGate Pro SMTP 4.0.6) with ESMTP id 2050431 for lml@lancaironline.net; Wed, 12 Mar 2003 11:28:41 -0500 Received: from tomwill (unknown[12.95.10.42]) by mtiwmhc11.worldnet.att.net (mtiwmhc11) with SMTP id <2003031216283911100f5apke>; Wed, 12 Mar 2003 16:28:40 +0000 From: "Tom Williams" X-Original-To: "Lancair Mailing List" Subject: RPM vs MAP??? X-Original-Date: Wed, 12 Mar 2003 06:31:34 -1000 X-Original-Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Importance: Normal In-Reply-To: I'm especially interested in George Braly and Jack Kane's response, but everyones input is welcome. I'm currently flying a piper Arrow with the tach placarded red from 2100 to 2350 RPM. Cruising options are 24 squared or 2100 and ? MAP. I am using 2100 and 25in. It runs only 3~4 knots slower, AND cooler, quieter, and burns less fuel than 2350 and 24in. Is this a problem? Many people talk about running over square, but fixed pitch prop engines run over square all the time. Tom Williams 360FB ~25% HNL Intl