X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Mon, 14 Aug 2006 21:08:16 -0400 Message-ID: X-Original-Return-Path: Received: from smtp113.sbc.mail.mud.yahoo.com ([68.142.198.212] verified) by logan.com (CommuniGate Pro SMTP 5.1c.3) with SMTP id 1331585 for lml@lancaironline.net; Mon, 14 Aug 2006 19:35:27 -0400 Received-SPF: none receiver=logan.com; client-ip=68.142.198.212; envelope-from=elippse@sbcglobal.net Received: (qmail 51488 invoked from network); 14 Aug 2006 23:34:37 -0000 Received: from unknown (HELO Computerroom) (elippse@sbcglobal.net@75.15.123.201 with login) by smtp113.sbc.mail.mud.yahoo.com with SMTP; 14 Aug 2006 23:34:37 -0000 X-Original-Message-ID: <000901c6bffa$3737f0a0$c97b0f4b@Computerroom> From: "Paul Lipps" X-Original-To: "Marv Kaye" Subject: spinner cracks X-Original-Date: Mon, 14 Aug 2006 16:34:40 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01C6BFBF.89EF54E0" 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_0006_01C6BFBF.89EF54E0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable We had two backing plates crack on an O-320, fixed pitch prop, with the = Lancair 12" spinner. The slight out-of-balance of these spinners, with = no forward bulkhead, would cause them to flex the backing plate and = crack it. Since putting in a fibreglass-reinforced 1/4" foam forward = bulkhead inside the spinner, which fits snuggly around the crush plate, = there has been no more cracking on that plane, nor on my O-235. ------=_NextPart_000_0006_01C6BFBF.89EF54E0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
We had two backing plates crack on an O-320, = fixed pitch=20 prop, with the Lancair 12" spinner. The slight out-of-balance of these = spinners,=20 with no forward bulkhead, would cause them to flex the backing plate and = crack=20 it. Since putting in a fibreglass-reinforced 1/4" foam forward = bulkhead=20 inside the spinner, which fits snuggly around the crush plate, there has = been no=20 more cracking on that plane, nor on my O-235.
------=_NextPart_000_0006_01C6BFBF.89EF54E0--