X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 1 [X] Return-Path: Received: from alnrmhc12.comcast.net ([204.127.225.92] verified) by logan.com (CommuniGate Pro SMTP 5.1.3) with ESMTP id 1645582 for flyrotary@lancaironline.net; Wed, 06 Dec 2006 02:11:08 -0500 Received-SPF: none receiver=logan.com; client-ip=204.127.225.92; envelope-from=n3773@comcast.net Received: from rv8 (c-24-21-141-28.hsd1.or.comcast.net[24.21.141.28]) by comcast.net (alnrmhc12) with SMTP id <20061206071047b1200sv84le>; Wed, 6 Dec 2006 07:10:47 +0000 Message-ID: <000c01c71905$a68cba80$1c8d1518@rv8> Reply-To: "kevin lane" From: "kevin lane" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: redrive lube Date: Tue, 5 Dec 2006 23:10:41 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01C718C2.954F9050" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 This is a multi-part message in MIME format. ------=_NextPart_000_0009_01C718C2.954F9050 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable George - don't get me in trouble. I'm NOT saying Tracy is wrong, I was = just wanting to learn why things are designed the way they are. so, the high HP on the redrive requires better lubrication than simply = grease, I.e. spray lubrication, and for simplification, the engine oil = system (synthetic oil) is used rather than a separate system. how is the C-6 lubed in trucks? I'm sure it's average HP requirements = are less than the PSRU. where are the c-6 planetary gears actually = located in a truck? trans, rear end, o/d unit...? ----- Original Message -----=20 From: George Lendich=20 To: Rotary motors in aircraft=20 Sent: Tuesday, December 05, 2006 10:40 PM Subject: [FlyRotary] Re: redrive lube Kevin, I guess this will be one of a hundred responses, however - 1.Tracy's way of doing his PSRU is OK. 2. Motor oils is likely to get contaminated with 2-stroke oil if your = using it (most are) and carbon particles from the combustion process = which act as an abrasive. 3. Motor oils need to be changed after 12 months even in low use = situations. 4. Heavy duty of the gears ( as in aviation use) may need pressure = directional spraying, whereby most gearboxes have splash lubrication. An ideal situation would be a separate cooling of PSRU oil with = synthetic lube oil, with pressure fed directional spraying of the = planetaries and their bearings from it's own pump and reserve/ cooler. Just my opinion. George ( down under) ----- Original Message -----=20 From: kevin lane=20 To: Rotary motors in aircraft=20 Sent: Wednesday, December 06, 2006 3:39 PM Subject: [FlyRotary] redrive lube i am asking this question with only the experience back in college = years of putting a buick v-6 in a 1953 willys, no race car experience = etc...... auto transmissions have special fluid and coolers because of the = torque converters, right? manual transmissions just have gear lube, = which, it seems, you put in and basically forget about. what is = different about the PSRU redrive from a manual transmission? why can't = it be self-contained with gear lube and forgotten? are planetary gears = different from a manual transmission? are they fed with an oil flow and = coolers in trucks? i'm sure all of this has already been answered and = thought out. ken said he keeps his redrive lube separate from the dirty = engine oil. why are tracy's redrives plumbed as part of the engine oil = flow? kevin (just curious) ------=_NextPart_000_0009_01C718C2.954F9050 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
George - don't get me in = trouble.  I'm NOT=20 saying Tracy is wrong, I was just wanting to learn why things are = designed the=20 way they are.
so, the high HP on the redrive = requires better=20 lubrication than simply grease, I.e. spray lubrication, and for = simplification,=20 the engine oil system (synthetic oil) is used rather than a = separate=20 system.
how is the C-6 lubed in trucks?  = I'm sure=20 it's average HP requirements are less than the PSRU.  = where are the=20 c-6 planetary gears actually located in a truck? trans, rear end, o/d=20 unit...?
----- Original Message -----
From:=20 George=20 Lendich
Sent: Tuesday, December 05, = 2006 10:40=20 PM
Subject: [FlyRotary] Re: = redrive=20 lube

Kevin,
I guess this will be one of a hundred = responses,=20 however -
1.Tracy's way of doing his PSRU is=20 OK.
2. Motor oils is likely to get = contaminated with=20 2-stroke oil if your using it (most are) and carbon particles = from the=20 combustion process which act as an abrasive.
3. Motor oils need to be changed = after 12 months=20 even in low use situations.
4. Heavy duty of the gears ( as in = aviation use)=20 may need pressure directional spraying, whereby most gearboxes = have=20 splash lubrication.
 
An ideal situation would be a = separate cooling of=20 PSRU oil with synthetic lube oil, with pressure fed directional = spraying of=20 the planetaries and their bearings from it's own pump and reserve/=20 cooler.
 
Just my opinion.
George ( down under)
----- Original Message -----
From:=20 kevin = lane=20
To: Rotary motors in = aircraft=20
Sent: Wednesday, December 06, = 2006 3:39=20 PM
Subject: [FlyRotary] redrive = lube

i am asking this question with = only the=20 experience back in college years of putting a buick v-6 in a 1953 = willys, no=20 race car experience etc......
 
auto transmissions have special = fluid and=20 coolers because of the torque converters, right?  manual = transmissions=20 just have gear lube, which, it seems, you put in and basically = forget=20 about.  what is different about the PSRU redrive from a manual=20 transmission?  why can't it be self-contained with gear lube = and=20 forgotten?  are planetary = gears=20 different from a manual transmission?  are they fed with an oil = flow=20 and coolers in trucks?  i'm sure all of this has already been = answered=20 and thought out.  ken said he keeps his redrive = lube separate from=20 the dirty engine oil.  why are tracy's redrives plumbed as part = of the=20 engine oil flow?   kevin (just=20 curious)
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