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 5.2.7) with ESMTP id 3117749 for flyrotary@lancaironline.net; Sat, 06 Sep 2008 21:13:21 -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-omta02.mail.rr.com with ESMTP id <20080907011246.DUXV21396.cdptpa-omta02.mail.rr.com@[192.168.0.19]> for ; Sun, 7 Sep 2008 01:12:46 +0000 Message-ID: <48C32AA4.2020303@nc.rr.com> Date: Sat, 06 Sep 2008 21:13:08 -0400 From: Ernest Christley User-Agent: Thunderbird 2.0.0.16 (X11/20080724) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: New rotary engine-mazda points on design References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit George Lendich wrote: > Are they really going to have ceramic coatings on the side housings? I have nothing to suggest that they will, other than it being the most realistic choice. The other option is steel inserts. Steel inserts are doable, but they carry a lot of machining, joining and dissimilar metal baggage. The ceramics would be a cast/bake in place operation. -- http://www.ernest.isa-geek.org