X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp01.syd.iprimus.net.au ([210.50.30.196] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 911797 for flyrotary@lancaironline.net; Fri, 22 Apr 2005 19:17:17 -0400 Received-SPF: pass receiver=logan.com; client-ip=210.50.30.196; envelope-from=daval@iprimus.com.au Received: from [192.168.1.8] (211.26.28.186) by smtp01.syd.iprimus.net.au (7.0.036) id 4263F6DC0015CA15 for flyrotary@lancaironline.net; Sat, 23 Apr 2005 09:16:29 +1000 Mime-Version: 1.0 (Apple Message framework v622) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-6-613113249 Message-Id: <403a05fea47b9698eaef956889f8aadc@iprimus.com.au> From: david mccandless Subject: Re: [FlyRotary] Re: All Parts have arrived, Whew! Date: Sat, 23 Apr 2005 07:16:23 +0800 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.622) --Apple-Mail-6-613113249 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 23/04/2005, at 7:04 AM, Ed Anderson wrote: > George, the rotor housings had some wear - but no gouges or groves, no=20= > missing chrome - so they were probably OK to reuse again.=A0 However,=20= > there was what appeared to be "chatter" wear - strips across the=20 > chrome at regular intervals.=A0 When you rubbed your fingers along = them=20 > I could detect a faint wave like pattern (valleys and peaks).=A0 So=20 > decided with new rotors and seals to go with new rotor housings.=A0=20 > Those were used ones and who knows how many miles they might have=20 > had.=A0 > =A0 > Well, I was quite surprised at the amount of wear on the seals -=A0 = they=20 > were brand new 150 hours ago but the seals were badly grooved and worn=20= > - now I am certain that wear was greatly accelerated by the poor=20 > condition of the seal slots - but still.=A0 In any case, new stronger=20= > seals are going to be used next - as well as additional of an air=20 > filter.=A0 I personally don't think an airfilter would have made any=20= > difference in the apex seal breaking - but, I also noticed that the=20 > rotor metal oil rings were worn outside the specs and they were new=20 > 150 hours ago.=A0 So I do believe I have had some accelerated wear due=20= > to the dust in and around my hangar over the past two years.=A0 Since = a=20 > filter is cheap, I'm going to stick one on. > =A0 > Ed >> Hi Ed, just for background info, were you mixing oil in the fuel, or=20= >> maybe Richard Sohn's mod or did you use the stock Mazda metering=20 >> pump? BR, Dave= --Apple-Mail-6-613113249 Content-Transfer-Encoding: quoted-printable Content-Type: text/enriched; charset=ISO-8859-1 On 23/04/2005, at 7:04 AM, Ed Anderson wrote: ArialGeorge, the rotor housings had some wear - but no gouges or groves, no missing chrome - so they were probably OK to reuse again.=A0 However, there was what appeared to be "chatter" wear - strips across the chrome at regular intervals.=A0 When you rubbed your fingers along them I could detect a faint wave like pattern (valleys and peaks).=A0 So decided with new rotors and seals to go with new rotor housings.=A0 Those were used ones and who knows how many miles they might have = had.=A0 =A0 ArialWell, I was quite surprised at the amount of wear on the seals -=A0 they were brand new 150 hours ago but the seals were badly grooved and worn - now I am certain that wear was greatly accelerated by the poor condition of the seal slots - but still.=A0 In any case, new stronger seals are going to be used next - as well as additional of an air filter.=A0 I personally don't think an airfilter would have made any difference in the apex seal breaking - but, I also noticed that the rotor metal oil rings were worn outside the specs and they were new 150 hours ago.=A0 So I do believe I have had some accelerated wear due to the dust in and around my hangar over the past two years.=A0 Since a filter is cheap, I'm going to stick one = on. =A0 ArialEd ArialHi Ed, just for background info, were you mixing oil in the fuel, or maybe Richard Sohn's mod or did you use the stock Mazda metering pump? BR, = Dave= --Apple-Mail-6-613113249--