X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-db01.mx.aol.com ([205.188.91.95] verified) by logan.com (CommuniGate Pro SMTP 5.4c2o) with ESMTP id 4871904 for flyrotary@lancaironline.net; Tue, 15 Feb 2011 23:24:17 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.91.95; envelope-from=wrjjrs@aol.com Received: from mtaout-da02.r1000.mx.aol.com (mtaout-da02.r1000.mx.aol.com [172.29.51.130]) by imr-db01.mx.aol.com (8.14.1/8.14.1) with ESMTP id p1G4NUgP001492 for ; Tue, 15 Feb 2011 23:23:30 -0500 Received: from mtaout-da02.r1000.mx.aol.com (145.sub-174-253-247.myvzw.com [174.253.247.145]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mtaout-da02.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPSA id 33583E000097 for ; Tue, 15 Feb 2011 23:23:21 -0500 (EST) Message-ID: From: "wrjjrs@aol.com" To: "Rotary motors in aircraft" Date: Tue, 15 Feb 2011 20:23:37 -0800 X-Mailer: Motorola android mail 1.0 MIME-Version: 1.0 Subject: Re: [FlyRotary] Re: Ceramic Apex Seals....curiosity REceramin/carbon/steelst X-Priority: 3 References: In-Reply-To: Content-Type: multipart/alternative; boundary="Motorola-A-Mail-sOmCtY2L3hcIk3kr" x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:504253312:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d33824d5b51394f06 X-AOL-IP: 174.253.247.145 --Motorola-A-Mail-sOmCtY2L3hcIk3kr Content-Type: text/plain; Format="Flowed"; DelSp="Yes"; charset="US-ASCII" Content-Transfer-Encoding: 7bit Dustin, The Mazda factory LeMans winning 4 rotor used the Ianetti ceramic apex seals. In the post race teardown they measured negible wear on the ceramic seals. That is as good a test of endurance as you can get. The Ianetti seals are the best you can get period. I would love to find a half price version. Bill Jepson Sent via DROID on Verizon Wireless -----Original message----- From: Dustin Lobner To: Rotary motors in aircraft Sent: Wed, Feb 16, 2011 01:30:26 GMT+00:00 Subject: [FlyRotary] Re: Ceramic Apex Seals....curiosity REceramin/carbon/steelst For what it's worth, I called Adam at www.rotaryengines.com and had a half hour discussion with him about things. He was remarkably open about putting it in an aircraft (a lot of other places won't give you the time of day if they hear "aircraft" as I'm sure some of you know). I said that for an aircraft he wouldn't put in ceramics because they're more there for super-high stress situations like drag racing, but for an aircraft the cost:benefit ratio isn't there. Plus, he's not 100% convinced on the reliability. Dustin On Tue, Feb 15, 2011 at 6:26 PM, wrote: > In a message dated 2/15/2011 11:58:49 A.M. Eastern Standard Time, > cbarber@texasattorney.net writes: > > Heck, tearing down my engine seems to be a routine event as of late > > That was my understanding too....about being nicer to the housings. > > I was just wondering about what I don't know or what could be expanded on. > > Like Dave said, minding parameters is the proper course but I would like to > have as clear an understanding as possible for my own edification. > > > Ceramics have now come of age in many areas. Any machine shop has tooling > in the form of ceramic triangles that clamp into tool holders. It maters not > if the work piece is heat treated, or harder than Chinese arithmetic, the > ceramic bits go through it like it was butter. The bits are cheap, and > discarded if fouled or dulled. > > Ceramic apex seals are the gold standard of apex seals. 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