X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wr-out-0506.google.com ([64.233.184.234] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1091291 for flyrotary@lancaironline.net; Wed, 03 May 2006 23:33:12 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.233.184.234; envelope-from=russell.duffy@gmail.com Received: by wr-out-0506.google.com with SMTP id 37so275703wra for ; Wed, 03 May 2006 20:32:29 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:from:to:subject:date:message-id:mime-version:content-type:x-priority:x-msmail-priority:x-mailer:x-mimeole:importance:in-reply-to; b=DBzMG/6zRKYPGyvrkEWaotmo9G3AtO23/HzIMk+udViZxYFyLfqhi8IbWJvSc5pcVDOrhvz1Jfl7N8UEUUs+7tVtC/F+mHEiy+kDcNAfarxaw4CdMzq8TdXa5LcoiXhK8QPQjuzTsZNDoBiHAWx6DJPtqTCpLX0P4g1Lt5PDRes= Received: by 10.54.84.15 with SMTP id h15mr199648wrb; Wed, 03 May 2006 20:32:29 -0700 (PDT) Return-Path: Received: from raddell ( [209.114.234.11]) by mx.gmail.com with ESMTP id 33sm2103366wra.2006.05.03.20.32.29; Wed, 03 May 2006 20:32:29 -0700 (PDT) From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Was Oil Pressure and Now... Date: Wed, 3 May 2006 23:32:26 -0400 Message-ID: <000a01c66f2b$5d963600$c49412c6@raddell> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000B_01C66F09.D6849600" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_000B_01C66F09.D6849600 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit What things? The only place that I can think of where there is brass bearings is in the PSRU. All bearings in the engine are steel coated with copper coated with babbit, right? Hi Finn, The part of the message I quoted had nothing to do with brass or gold flakes. I was commenting on bearing damage, which could come from at least a few things. How about metal filings left in the engine, or insufficient bearing clearance, or a plugged up oil galley somewhere? But how would any flakes (possibly remaining from reaming the PSRU bearing) ever find their way into the engine? No chance, as Tracy already noted. I think the gold colored flakes you found in the filter and/or pan are completely unrelated to any wear of engine bearings. I would suspect the jets in the e-shaft. Too weak springs? Forgot to install the springs or balls in those jets? That would dump all the oil out into the rotors before it ever reached the front bearing. Sounds like potential builder errors you're mentioning. Good examples of the "things" I referred to earlier. Rusty ------=_NextPart_000_000B_01C66F09.D6849600 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
What things? The only place that I can think of where there is = brass=20 bearings is in the PSRU. All bearings in the engine are steel coated = with copper=20 coated with babbit, right? 
 
Hi=20 Finn,
 
The part of=20 the message I quoted had nothing to do with brass or gold = flakes.  I=20 was commenting on bearing damage, which could come from at least a few=20 things.  How about metal filings left in the engine, or = insufficient=20 bearing clearance, or a plugged up oil galley somewhere? =20  

But how would any flakes (possibly remaining = from=20 reaming the PSRU bearing) ever find their way into the engine? 
 
No chance, as=20 Tracy already noted.   

I think the gold = colored=20 flakes you found in the filter and/or pan are completely unrelated to = any wear=20 of engine bearings. I would suspect the jets in the e-shaft. Too weak = springs?=20 Forgot to install the springs or balls in those jets? That would dump = all the=20 oil out into the rotors before it ever reached the front bearing. 
 
Sounds like=20 potential builder errors you're mentioning.  Good examples of the = "things"=20 I referred to earlier.  
 
Rusty
 
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