Return-Path: Received: from [24.25.9.100] (HELO ms-smtp-01-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 361454 for flyrotary@lancaironline.net; Wed, 11 Aug 2004 15:16:00 -0400 Received-SPF: none receiver=logan.com; client-ip=24.25.9.100; envelope-from=eanderson@carolina.rr.com Received: from EDWARD (cpe-069-132-183-211.carolina.rr.com [69.132.183.211]) by ms-smtp-01-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i7BJFPPg010970 for ; Wed, 11 Aug 2004 15:15:26 -0400 (EDT) Message-ID: <001501c47fd7$8eb5c5b0$2402a8c0@EDWARD> From: "Ed Anderson" To: "Rotary motors in aircraft" Subject: C drive Date: Wed, 11 Aug 2004 15:15:25 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0012_01C47FB6.07687C40" 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_0012_01C47FB6.07687C40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Got my new conversion C drive from Tracy today. Looks great, will start = working soon to put it and prop on the aircraft. However, after close examination of the drive, I wish to state that it = turns out the RING gear IS Fixed on the 2.85. The propeller shaft is = driven by the planetary gear housing (which now rotates) which is = driven (of course ) by the SUN gear. This arrangement is the opposite = of the 2.14 where the ring gear rotates and drives the prop shaft and = the planetary is fixed. The Sun gear drives the planetary in both cases. = Someone took issue with my earlier speculation that this was the case = with the C drive and not being a gear box guy I declined to argue the = point. However, in this case, it turns out after rotating the prop = shaft it was clear what internal parts rotated and which did not. The = ring gear does not and the planetary does (on the C drive). Ed =20 Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ------=_NextPart_000_0012_01C47FB6.07687C40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Got my new conversion C drive from = Tracy=20 today. Looks great, will start working soon to put it and prop on = the=20 aircraft.

However, after close examination of the = drive, I=20 wish to state that it turns out the RING gear IS Fixed on the = 2.85. The=20 propeller shaft is driven by the planetary gear housing (which now = rotates)=20 which is driven (of course ) by the SUN gear. This = arrangement =20 is the opposite of the 2.14 where the ring gear rotates and drives = the prop=20 shaft and the planetary is fixed. The Sun gear drives the planetary = in both cases.

Someone took issue with my earlier = speculation that=20 this was the case with the C drive and not being a gear box guy I = declined to=20 argue the point. However, in this case, it turns out = after=20 rotating the prop shaft it was clear what internal parts rotated=20 and which did not. The ring gear does not and the planetary = does (on=20 the C drive).

Ed Anderson
RV-6A N494BW Rotary=20 Powered
Matthews, NC

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