X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [67.8.179.94] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WebUser 5.0.9) with HTTP id 1087419 for lml@lancaironline.net; Mon, 01 May 2006 14:02:22 -0400 From: "Marvin Kaye" Subject: Re: [LML] Re: Hot pistons To: lml X-Mailer: CommuniGate Pro WebUser v5.0.9 Date: Mon, 01 May 2006 14:02:22 -0400 Message-ID: In-Reply-To: <20060501025659.70958.qmail@web61323.mail.yahoo.com> References: <20060501025659.70958.qmail@web61323.mail.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Transfer-Encoding: 8bit Posted for Charlie Kohler : Walter , Sure, I don't see a problem with that at all. As a course teaches, detonation is always nearby (1 inch on the red knob) but it's not always destructive. I guess you could say there's detonation and then there's DETONATION. So the explanation of light/ medium /heavy need to be quantified with actual temperatures/pressures. The melting point / time of exposure the piston gets would determine whether or not it was eroded. Charlie K. ----- Original Message ---- From: Walter Atkinson To: Lancair Mailing List Sent: Sunday, April 30, 2006 1:52:02 PM Subject: [LML] Re: Hot pistons On Apr 27, 2006, at 9:57 PM, Charlie Kohler wrote: Detonation erodes the center of the piston. Charlie: Remember the cylinder we showed in class that had 20 hours of light detonation, 3-4 hours of medium detonation and about 30 minutes of heavy detonation that looked absolutely pristine and showed no signs whatsoever of any damage? How does that reconcile with the above?