X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [65.54.250.77] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1090497 for flyrotary@lancaironline.net; Wed, 03 May 2006 15:24:18 -0400 Received-SPF: pass receiver=logan.com; client-ip=65.54.250.77; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 3 May 2006 12:23:32 -0700 Message-ID: Received: from 4.171.147.216 by BAY115-DAV5.phx.gbl with DAV; Wed, 03 May 2006 19:23:29 +0000 X-Originating-IP: [4.171.147.216] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Was Oil Pressure and Now... Date: Wed, 3 May 2006 15:23:25 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001B_01C66EC5.85C30100" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.20.0026.0800 Seal-Send-Time: Wed, 3 May 2006 15:23:25 -0400 X-OriginalArrivalTime: 03 May 2006 19:23:32.0734 (UTC) FILETIME=[10F091E0:01C66EE7] This is a multi-part message in MIME format. ------=_NextPart_000_001B_01C66EC5.85C30100 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageWith all due respect to Dave, this sounds fishy. Assuming there = was "a problem with the PSRU", it would not show up in bearings unless = the oil filter was completely clogged with debris or the oil pump had = been damaged (was it?). From your description of the filter, it was far = from clogged. Debris from the drive can only go to the oil pan. Anything that made = its way past the oil pickup screen and through the oil pump would have = to then go through the filter before it got to the bearings. Is this = the theory or is there another explanation? Tracy (tired of hearing from Dave that my drives can't work) Subject: [FlyRotary] Re: Was Oil Pressure and Now... >We'll all be interested to hear what they find. =20 =20 Went to see David Atkins yesterday. He continues to be a good person = and business to deal with. He took the time amidst the chaos to have the = engine completely torn down and inspected piece by piece as it was = disassembled - while I was there. It all looked pretty good until the = front housing E-shaft bearing. There was definitely some abnormal wear = there and some scuff marks on the E-shaft. There was also some wear on = the center bearing but just on the forward 1/10th of an inch. He's going = to replace the bearing and rebuild the engine and then check the oil = pressure.=20 =20 He suggested I look for any source of chips or anything coming from = the PSRU. Something caused that front bearing to get worn way too = quickly and he suspects there may be a problem with the PSRU since we = didn't find anything in the engine that looked like it was shedding = metal. =20 I'll try to get up to the hangar in the next couple of days to = retrieve the RD-1B and bring it home for disassembly and inspection. =20 ThanxAll, Joe Hull Cozy Mk-IV #991 (In Phase1 Flight Test - 10.9 hrs flown)=20 Redmond (Seattle), Washington ------=_NextPart_000_001B_01C66EC5.85C30100 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message=
With all due respect to Dave, this sounds=20 fishy.   Assuming there was "a problem with the PSRU", it = would=20 not show up in bearings unless the oil filter was completely = clogged with=20 debris or the oil pump had been damaged (was it?).  From your = description=20 of the filter, it was far from clogged.
 
Debris from the drive can only go to the oil pan.  Anything = that made=20 its way past the oil pickup screen and through the oil pump would have = to then=20 go through the filter before it got to the bearings.  Is this = the=20 theory  or is there another explanation?
 
Tracy  (tired of hearing from Dave that my drives can't=20 work)
 
 
Subject: [FlyRotary] Re: Was Oil Pressure and Now...

>We'll = all be=20 interested to hear what they find.      

 

Went to see = David=20 Atkins yesterday. He continues to be a good person and business to = deal with.=20 He took the time amidst the chaos to have the engine completely torn = down and=20 inspected piece by piece as it was disassembled =96 while I was there. = It all=20 looked pretty good until the front housing E-shaft bearing. There was=20 definitely some abnormal wear there and some scuff marks on the = E-shaft. There=20 was also some wear on the center bearing but just on the forward=20 1/10th of an inch. He=92s going to replace the bearing and = rebuild=20 the engine and then check the oil pressure. =

 

He = suggested I look=20 for any source of chips or anything coming from the PSRU. Something = caused=20 that front bearing to get worn way too quickly and he suspects there = may be a=20 problem with the PSRU since we didn=92t find anything in the engine = that looked=20 like it was shedding metal.

 

I=92ll try = to get up to=20 the hangar in the next couple of days to retrieve the RD-1B and bring = it home=20 for disassembly and inspection.

 

ThanxAll,

Joe = Hull

Cozy Mk-IV #991 (In Phase1 = Flight Test=20 - 10.9 hrs flown)

Redmond (Seattle), Washington

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