X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120] verified) by logan.com (CommuniGate Pro SMTP 5.2.3) with ESMTP id 2958113 for flyrotary@lancaironline.net; Sat, 07 Jun 2008 21:27:39 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=echristley@nc.rr.com Received: from [192.168.0.19] (really [66.57.38.121]) by cdptpa-omta03.mail.rr.com with ESMTP id <20080608012701.LDAD5514.cdptpa-omta03.mail.rr.com@[192.168.0.19]> for ; Sun, 8 Jun 2008 01:27:01 +0000 Message-ID: <484B365D.7060903@nc.rr.com> Date: Sat, 07 Jun 2008 21:31:09 -0400 From: Ernest Christley User-Agent: Thunderbird 2.0.0.12 (X11/20080227) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: Ceramic Seals References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Paul Vermillion wrote: > Newbie Question---for the "normal"13B NA engine, how do the ceramic apex > seals compare with the other types of seals you all are using? (I've rarely > ever read anything about their use in this forum.) > That's because they're so expensive, and we're all so cheap 8*) I believe Lynn has said that if you can afford them they will allow you to endlessly do some ungodly RPM without damaging the rotor housings. I'm restricting my engine to godly RPMs, so it is an unnecessary expense. -- http://www.ronpaultimeline.com