Return-Path: Received: from [24.25.9.101] (HELO ms-smtp-02-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 383865 for flyrotary@lancaironline.net; Sun, 29 Aug 2004 18:17:01 -0400 Received-SPF: none receiver=logan.com; client-ip=24.25.9.101; envelope-from=eanderson@carolina.rr.com Received: from EDWARD (cpe-069-132-183-211.carolina.rr.com [69.132.183.211]) by ms-smtp-02-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i7TMGTNs004588 for ; Sun, 29 Aug 2004 18:16:30 -0400 (EDT) Message-ID: <000a01c48e15$d91adbd0$2402a8c0@EDWARD> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Engine run - Good news/bad news Date: Sun, 29 Aug 2004 18:16:35 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01C48DF4.51CB4870" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0007_01C48DF4.51CB4870 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Al, Sounds like you are looking at the brass "sleeve" bearing around the = prop shaft. Should, of course,have an opening for the oil. If this = PSRU was run on the dyno it sounds that like either: 1. This condition existed before the dyno runs (could be a missed step = in manufacturing) or 2. The sleeve has sheared its pins and spun in the casting. Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ----- Original Message -----=20 From: Al Gietzen=20 To: Rotary motors in aircraft=20 Sent: Sunday, August 29, 2004 5:36 PM Subject: [FlyRotary] Re: Engine run - Good news/bad news Subject: [FlyRotary] Re: Engine run - Good news/bad news Took the fitting out; soaked out the oil. Shining a light in reveals = a nice smooth surface of brass seated tight to the casting. No place = for the oil to go. =20 Al Al, check for foreign debris in the inlet too. Dave Leonard 2. The joy was short-lived because it was only a one minute run = while I had the redrive drain line disconnected. Taking the drain line = off gave the first clue. No sign that a drop of oil had ever been = there. The amount of oil in the container after the run - zippo; not a = drop. I took off the feed line and there was oil sitting in the = fitting. Feeding to a container, I ran again for less than 30 seconds, = and sent more than a pint into the container. Complete blockage inside = the drive. The prospect of removing the prop, drive and disassembly is = not a happy one.=20 =20 Al, something you might try before taking the gearbox off (a pain = to say the least). Its been know for such stuff as the silicon grey = sealant to plug up the drains. Yes, unlikely that it would have plugged = up the front one. But, short of taking off the gear box you might try = removing the drain fittings - just in the remote chance they could be = plugged. Ed With two exits and 100 psi oil; my guess is it's highly unlikely = that the explanation is 'foreign matter'. I think there is no oil going = into the drive. It appears to me from the diagram that the oil goes in = through a bushing via a hole and/or groove. Most likely a misalignment = there giving the oil nowhere to go. I'll check further later today. Al ------=_NextPart_000_0007_01C48DF4.51CB4870 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Al, Sounds like you are looking at the = brass=20 "sleeve" bearing around the prop shaft.  Should, of = course,have an=20 opening for the oil.  If this PSRU was run on the dyno it sounds = that like=20 either:
 
1. This condition existed before = the dyno runs=20 (could be a missed step in manufacturing) or
2. The sleeve has sheared its pins and = spun in the=20 casting.
 
Ed
 
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
From:=20 Al = Gietzen=20
Sent: Sunday, August 29, 2004 = 5:36=20 PM
Subject: [FlyRotary] Re: Engine = run -=20 Good news/bad news

Subject:=20 [FlyRotary] Re: Engine run - Good news/bad news

 

Took the = fitting=20 out; soaked out the oil.  Shining a light in reveals a nice = smooth=20 surface of brass seated tight to the casting.  No place for the = oil to=20 go. 

 

Al

Al,=20 check for foreign debris in the inlet too.

Dave=20 Leonard

 

2. The joy was = short-lived=20 because it was only a one minute run while I had the redrive drain = line=20 disconnected.  Taking the drain line off gave the first = clue. =20 No sign that a drop of oil had ever been there.  The amount = of oil in=20 the container after the run =96 zippo; not a drop.  I took = off the feed=20 line and there was oil sitting in the fitting.  Feeding to a=20 container, I ran again for less than 30 seconds, and sent more = than a pint=20 into the container.  Complete blockage inside the = drive.  The=20 prospect of removing the prop, drive and disassembly is not a = happy=20 one.

  

Al, = something=20 you might try before taking the gearbox off (a pain to say the=20 least).  Its been know for such stuff as the silicon grey = sealant to=20 plug up the drains.  Yes, unlikely that it would have plugged = up the=20 front one.  But, short of taking off the gear box you might = try=20 removing the drain fittings - just in the remote chance they could = be=20 plugged.

 

Ed

With two=20 exits and 100 psi oil; my guess is it=92s highly unlikely that the = explanation is =91foreign matter=92.  I think there is no oil = going into=20 the drive.  It appears to me from the diagram that the oil = goes in=20 through a bushing via a hole and/or groove.  Most likely a=20 misalignment there giving the oil nowhere to go.  I=92ll = check further=20 later today.

 

Al

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