X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Received: from ms-smtp-01.southeast.rr.com ([24.25.9.100] verified) by logan.com (CommuniGate Pro SMTP 5.1.7) with ESMTP id 1907669 for flyrotary@lancaironline.net; Wed, 07 Mar 2007 15:14:12 -0500 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.100; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-103-061.carolina.res.rr.com [24.74.103.61]) by ms-smtp-01.southeast.rr.com (8.13.6/8.13.6) with SMTP id l27KDAKP003134 for ; Wed, 7 Mar 2007 15:13:11 -0500 (EST) Message-ID: <001201c760f5$08d92110$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Worn rotor housings Date: Wed, 7 Mar 2007 15:13:12 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01C760CB.1F9F0010" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_000F_01C760CB.1F9F0010 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I certainly agree with George. Being in the air is not place to have ..." I wish I had ..." thoughts. = My view is if there is any question or doubt as to its condition then I = replace it. Yes, I know used parts in many cases are more reliable than = new as they are past the infant mortality period. I do reuse parts. = The e shaft in my 91 block was also in 1986 block - still looks good as = new so I naturally reused it. I tried used rotors and in my case because I did not know to check the = critical apex seal slot wear ended up swallowing one and aborting a trip = to Sun & Fun. You need to know what is critical about a part and then = check that parameter as being comfortably within specifications. Also, what I might not even have a question about putting in a car - = will get rejected for airborne duty - 4F. Ed ----- Original Message -----=20 From: George Graham=20 To: Rotary motors in aircraft=20 Sent: Wednesday, March 07, 2007 3:01 PM Subject: [FlyRotary] Worn rotor housings My .02 Joe, My first teardown and rebuild 13b had rotor housings with some of = the steel plating missing along one edge. I took them around to every = "expert" that I could find, they all agreed that they were fine to use. = I then went ahead and assembled the motor, with new seals, gaskets etc. The motor ran great, like brand new I imagine. But, When it was time to install the motor into my airplane, I just = didn't feel good about those rotor housings, so I found another motor = that I've been flying since 1998. By peeking inside I knew that these = housings were pristine. I still have the first motor, but I doubt that I = will ever use it without another rebuild with new housings. Bert Rutan said something to the effect of "Do your very best, even = that will only be just barely good enough". I know, that sitting on the end of the runway, I must feel confident = that everything is as good as I can get it, in order to enjoy my flight. = Others will differ perhaps. George Graham Sarasota Florida Mazda RX7 EZ -------------------------------------------------------------------------= ----- Never miss an email again! Yahoo! Toolbar alerts you the instant new Mail arrives. Check it out. ------=_NextPart_000_000F_01C760CB.1F9F0010 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I certainly agree with George.
 
Being in the air is not place to have ..." I = wish I had=20 ..." thoughts.  My view is if there is any question or doubt as to = its=20 condition then I replace it.  Yes, I know used parts in many cases = are more=20 reliable than new as they are past the infant mortality period.  I = do reuse=20 parts.  The e shaft in my 91 block was also in 1986 block - still = looks=20 good as new so I naturally reused it.
 
I tried used rotors and in my case because I did = not know=20 to check the critical apex seal slot wear ended up swallowing one and = aborting a=20 trip to Sun & Fun.  You need to know what is critical about a = part and=20 then check that parameter as being comfortably within=20 specifications.
 
Also, what I might not even have a question = about putting=20 in  a car - will get rejected for airborne duty - 4F.
 
 
 
Ed
----- Original Message -----
From:=20 George = Graham=20
Sent: Wednesday, March 07, 2007 = 3:01=20 PM
Subject: [FlyRotary] Worn rotor = housings

My .02 Joe,

   My first teardown and = rebuild=20 13b had rotor housings with some of the steel plating missing along = one edge.=20 I took them around to every "expert" that I could find, they all = agreed that=20 they were fine to use.  I then went ahead and assembled the = motor, with=20 new seals, gaskets etc.
The motor ran great, like brand new I=20 imagine.

But, When it was time to install the motor into my = airplane, I=20 just didn't feel good about those rotor housings, so I found another = motor=20 that I've been flying since 1998.  By peeking inside I knew that = these=20 housings were pristine. I still have the first motor, but I doubt that = I will=20 ever use it without another rebuild with new housings.

Bert = Rutan said=20 something to the effect of "Do your very best, even that will only be = just=20 barely good enough".

I know, that sitting on the end of the = runway, I=20 must feel confident that everything is as good as I can get it, in = order to=20 enjoy my flight. Others will differ perhaps.


George=20 Graham
Sarasota Florida
Mazda RX7 EZ

Never=20 miss an email again!
Yahoo! Toolbar alerts you the instant new = Mail=20 arrives.=20 Check it out. ------=_NextPart_000_000F_01C760CB.1F9F0010--