Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Wed, 08 Jan 2003 14:19:21 -0500 Message-ID: X-Original-Return-Path: <13brv3@mchsi.com> Received: from sccmmhc02.mchsi.com ([204.127.203.184] verified) by logan.com (CommuniGate Pro SMTP 4.0.3) with ESMTP id 1947236 for flyrotary@lancaironline.net; Tue, 07 Jan 2003 23:41:40 -0500 Received: from sccqwbc04 ([204.127.203.164]) by sccmmhc02.mchsi.com (InterMail vM.4.01.03.27 201-229-121-127-20010626) with SMTP id <20030108044055.OOCZ5896.sccmmhc02.mchsi.com@sccqwbc04> for ; Wed, 8 Jan 2003 04:40:55 +0000 Received: from [65.136.101.134] by sccqwbc04; Wed, 08 Jan 2003 04:40:55 +0000 From: 13brv3@mchsi.com X-Original-To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: props X-Original-Date: Wed, 08 Jan 2003 04:40:55 +0000 X-Mailer: AT&T Message Center Version 1 (Nov 13 2002) X-Authenticated-Sender: MTNicnYzQG1jaHNpLmNvbQ== X-Original-Message-Id: <20030108044055.OOCZ5896.sccmmhc02.mchsi.com@sccqwbc04> My engine will be capable of running strong at 7500 RPM, and it will have about 80 more HP than Van expected an RV-3 to have. I'll want to try several different pitches, for different climb and cruise RPMs. In other words, I'm not sure what I want to optimize the prop for yet, but an adjustable prop will let me experiment. Cheers, Rusty If top speed is better with a wood prop, then what are > you looking to improve? Efficiency at cruise?