Return-Path: Received: from fed1rmmtao08.cox.net ([68.230.241.31] verified) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 383446 for flyrotary@lancaironline.net; Sun, 29 Aug 2004 11:25:04 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.31; envelope-from=ALVentures@cox.net Received: from BigAl ([68.107.116.221]) by fed1rmmtao08.cox.net (InterMail vM.6.01.03.02.01 201-2131-111-104-103-20040709) with ESMTP id <20040829152432.ICSI252.fed1rmmtao08.cox.net@BigAl> for ; Sun, 29 Aug 2004 11:24:32 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Engine run - Good news/bad news Date: Sun, 29 Aug 2004 08:24:44 -0700 Message-ID: <000001c48ddc$505732f0$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C48DA1.A3F85AF0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C48DA1.A3F85AF0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable 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. =20 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. =20 Al ------=_NextPart_000_0001_01C48DA1.A3F85AF0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

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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.

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

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