X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.4.51.85] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.3.5) with ESMTP id 1029152 for flyrotary@lancaironline.net; Fri, 01 Jul 2005 22:42:48 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.4.51.85; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 1 Jul 2005 19:42:02 -0700 Message-ID: Received: from 64.4.51.220 by BAY107-DAV13.phx.gbl with DAV; Sat, 02 Jul 2005 02:42:02 +0000 X-Originating-IP: [64.4.51.220] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Trials and tribulations of secondhand projects Date: Fri, 1 Jul 2005 22:41:59 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_010A_01C57E8E.173DF780" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.10.0011.1703 Seal-Send-Time: Fri, 1 Jul 2005 22:41:59 -0400 X-OriginalArrivalTime: 02 Jul 2005 02:42:02.0646 (UTC) FILETIME=[A0770B60:01C57EAF] This is a multi-part message in MIME format. ------=_NextPart_000_010A_01C57E8E.173DF780 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable This is only a guess based on the pix in your message but I would guess = that the three planet set is from the light duty C6 used in passenger = cars (there were a LOT of versions) and the 6 gear set probably is some = version of a C4.=20 Tracy Subject: [FlyRotary] Trials and tribulations of secondhand projects I was told, or at least made to understand, or...well...I'm not even sure anymore (I think I'm getting old). But I thought that the = gearset in my custom built PSRU came from a C4 transmission. I was even told, by a transmission technician, that the gearset I had was used in = busses (sp?), but after several warnings I thought it would be a good idea to switch the 3-pinion planet for a 6-pinion. It was only $218...cheap peace of mind, even if it didn't make any difference. The part came yesterday. Props to those of you who can figure out why = I feel a little disappointment. Can anybody shed any light onto what I have on my hands from the pictures? The only thing I know for sure is that the smaller set is indeed a C4 forward gear set. BTW, ratios. For you guys wanting to run PPs at high RPM and willing = to build their own reduction unit, this may be an excellent choice. I counted sun and ring gear teeth, but can't remember the exact count. But with a locked ring, and taking the output from the planet splines, you'd get a reduction of somewhere around 3.2. I'll count again when = I get home if anyone is really interested. >> Homepage: http://www.flyrotary.com/ >> Archive: = http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_010A_01C57E8E.173DF780 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

This is only a guess based on the pix in your message but I would = guess=20 that the three planet set is from the light duty C6 used in passenger = cars=20 (there were a LOT of versions) and the 6 gear set probably is some = version=20 of a C4.

Tracy

Subject: [FlyRotary] Trials and = tribulations of secondhand projects

I was told, or at least made to understand, = or...well...I'm not=20 even
sure anymore (I think I'm getting old). But I thought = that the=20 gearset
in my custom built PSRU came from a C4 transmission. = I was=20 even told,
by a transmission technician, that the gearset I had was = used in=20 busses
(sp?), but after several warnings I thought it would be a = good idea=20 to
switch the 3-pinion planet for a 6-pinion. It was only=20 $218...cheap
peace of mind, even if it didn't make any=20 difference.

The part came yesterday. Props to those of = you who=20 can figure out why I
feel a little disappointment.

Can = anybody shed=20 any light onto what I have on my hands from the
pictures? The = only=20 thing I know for sure is that the smaller set is
indeed a C4 = forward gear=20 set.

BTW, ratios. For you guys wanting to run PPs at high = RPM and=20 willing to
build their own reduction unit, this may be an excellent = choice. I
counted sun and ring gear teeth, but can't remember = the=20 exact count.
But with a locked ring, and taking the output from the = planet=20 splines,
you'd get a reduction of somewhere around 3.2. = I'll=20 count again when I
get home if anyone is really=20 interested.

>> Homepage: http://www.flyrotary.com/
>&= gt; =20 Archive: http://lancai= ronline.net/lists/flyrotary/List.html

------=_NextPart_000_010A_01C57E8E.173DF780--