X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 24 May 2012 10:43:38 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-spurfowl.atl.sa.earthlink.net ([209.86.89.66] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5557336 for lml@lancaironline.net; Thu, 24 May 2012 07:34:19 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.66; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=EzTUYQc8W9EUiIr/DWsLBPaC0l8mZuKzzKYQ3YVcmUK5FLPxK09+L9meyuX1sZsK; h=Received:Content-Type:Mime-Version:Subject:From:In-Reply-To:Date:Content-Transfer-Encoding:Message-Id:References:To:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [70.20.59.69] (helo=[192.168.1.24]) by elasmtp-spurfowl.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1SXWIc-0000JR-AQ for lml@lancaironline.net; Thu, 24 May 2012 07:33:46 -0400 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Apple Message framework v1084) Subject: Re: [LML] Re: B&C sd-20 backup alternator From: Colyn Case In-Reply-To: X-Original-Date: Thu, 24 May 2012 07:33:45 -0400 Content-Transfer-Encoding: quoted-printable X-Original-Message-Id: <5BE037A8-1C60-4BE0-B981-89EB71E34889@earthlink.net> References: X-Original-To: "Lancair Mailing List" X-Mailer: Apple Mail (2.1084) X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da94080dc9dd7362e79e2aa360a4be649f4a8350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 70.20.59.69 I'll add it to my list. Have you figured out if there is a relationship to the % of time the = standby alternator is energized and how soon it fails? I've been running mine all the time. On May 23, 2012, at 1:17 PM, Paul Miller wrote: Colyn: No need. Found the open circuit winding while pondering how the = stator could fail inside that big hunk of metal. See picture for third = broken stator winding. I can fix those breaks. Brushes and bearings and = stators are readily available, as you suggest, for these units as they = do power a number of applications from Toyota to Kubota. I believe they = are available domestically (N.A.). If it were my shop, I'd implement a = 500 hour recommended inspection just like the magnetos. They go in the = shop, get cleaned up, parts get checked and replaced as necessary and = everyone is happy. That's a lot better than in-plane failure. The = shop gets revenue, better understanding of the weak points and avoids = do-it-yourselfers like me taking things apart. I'd be very happy to = have Bill go through this thing every 500 hours and replace what needs = replacing and I have written him with that suggestion. Thanks for the = idea. Paul On 2012-05-23, at 11:17 AM, Colyn Case wrote: > Paul, >=20 > My understanding: Bill sources the parts in China or Japan, balances = everything and maybe tweaks a couple other things, and then puts his = name on it. Given the stator doesn't need to be balanced, could you = find the overseas source and solve your problem that way? >=20 > Colyn >=20 -- For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html