Return-Path: Sender: (Marvin Kaye) To: lml Date: Thu, 14 Nov 2002 11:34:42 -0500 Message-ID: X-Original-Return-Path: Received: from rwcrmhc51.attbi.com ([204.127.198.38] verified) by logan.com (CommuniGate Pro SMTP 4.0.1) with ESMTP id 1870690 for lml@lancaironline.net; Thu, 14 Nov 2002 11:16:04 -0500 Received: from rwcrwbc55 ([204.127.198.44]) by rwcrmhc51.attbi.com (InterMail vM.4.01.03.27 201-229-121-127-20010626) with SMTP id <20021114161009.NTDD11439.rwcrmhc51.attbi.com@rwcrwbc55> for ; Thu, 14 Nov 2002 16:10:09 +0000 Received: from [156.153.254.68] by rwcrwbc55; Thu, 14 Nov 2002 16:10:08 +0000 From: olsen25@attbi.com X-Original-To: lml@lancaironline.net Subject: Prop driving the engine X-Original-Date: Thu, 14 Nov 2002 16:10:08 +0000 X-Mailer: AT&T Message Center Version 1 (Nov 5 2002) X-Authenticated-Sender: b2xzZW4yNUBhdHRiaS5jb20= X-Original-Message-Id: <20021114161009.NTDD11439.rwcrmhc51.attbi.com@rwcrwbc55> Gang, I don't have it here at work, but I believe John Schwaner wrote in his book "The Sky Ranch Engineering Manual" (a **very** good book on piston aircraft engines) that having the prop drive the engine was bad because it causes the piston rings to slap back and forth in their channels in the pistons. This could lead to breakage of the rings. BTW, I highly recommend this book to anyone that wants to know more about the "whys" of piston aircraft engines. John's web site is: http://www.sacskyranch.com. Regards, Dan Olsen 320 MKII, 85% Fort Collins, CO