X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 24 Apr 2005 17:25:33 -0400 Message-ID: X-Original-Return-Path: Received: from [209.218.83.70] (HELO utahweb.com) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 912927 for lml@lancaironline.net; Sun, 24 Apr 2005 10:39:14 -0400 Received-SPF: none receiver=logan.com; client-ip=209.218.83.70; envelope-from=clkeller@utahweb.com Received: from utahweb.com [67.106.48.3] by utahweb.com with ESMTP (SMTPD32-8.15) id A17551780110; Sun, 24 Apr 2005 08:47:17 -0600 X-Original-Message-ID: <426BAF41.8040001@utahweb.com> X-Original-Date: Sun, 24 Apr 2005 08:37:53 -0600 From: C & A Keller User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 X-Original-To: Lancair Mail List Subject: spinner bulkheads Content-Type: multipart/alternative; boundary="------------040801020802090409090009" X-Declude-Sender: clkeller@utahweb.com [67.106.48.3] X-Spam-Tests-Failed: Whitelisted [0] This is a multi-part message in MIME format. --------------040801020802090409090009 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Jim Rogers wrote: >>I am wondering if anyone can tell me if there should be a bulkhead ahead of the prop in the spinner of my 360. The fiberglass spinner seems too flimsy to me. Jim<< Some time ago, 18 Nov.2003, Dan Olsen wrote about stabilizing his spinner. "I used the factory glass spinner. Having heard several stories of this spinner cracking the back plate, I figured it must have been to a slight out of balance or alignment situation. Aligning this spinner is pretty much impossible. Misalignment will cause a vibration that leads to failure. My solution was to build a foam and 2-bid/side "donut" that is glassed into the nose end of the spinner. I laid 2-bid on either side of 1/2" foam and cut it out into a donut shape approximately the size needed with the inside hole just a little bigger than the diameter of the prop hub. Then micro/BID the donut into place in the nose of the spinner. Finally, I put release tape around the prop hub, routed out the foam for about 1/4" on the inside hole of the donut to form a channel, filled the channel with micro and slid the entire spinner in to place and mounted it (the screws had already been installed). The next day the spinner popped off and I now have a custom fit bulkhead that will prevent wobble at the tip of the spinner, thereby preventing cracking. For photos, check out http://www.lancaironline.net/pix/olsen and look under the "construction" album for photos of the finished product." Perhaps Dan can add something to this. --------------040801020802090409090009 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Jim Rogers wrote: >>I am wondering if anyone can tell me if there should be a bulkhead ahead of the prop in the spinner of my 360. The fiberglass spinner seems too flimsy to me. Jim<<

Some time ago, 18 Nov.2003, Dan Olsen wrote about stabilizing his spinner. "I used the factory glass spinner. Having heard several stories of this spinner cracking the back plate, I figured it must have been to a slight out of balance or alignment situation. Aligning this spinner is pretty much impossible. Misalignment will cause a vibration that leads to failure. My solution was to build a foam and 2-bid/side "donut" that is glassed into the nose end of the spinner. I laid 2-bid on either side of 1/2" foam and cut it out into a donut shape approximately the size needed with the inside hole just a little bigger than the diameter of the prop hub. Then micro/BID the donut into place in the nose of the spinner. Finally, I put release tape around the prop hub, routed out the foam for about 1/4" on the inside hole of the donut to form a channel, filled the channel with micro and slid the entire spinner in to place and mounted it (the screws had already been installed). The next day the spinner popped off and I now have a custom fit bulkhead that will prevent wobble at the tip of the spinner, thereby preventing cracking. For photos, check out http://www.lancaironline.net/pix/olsen and look under the "construction" album for photos of the finished product."
Perhaps Dan can add something to this.
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