X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf25aec.mail.bellsouth.net ([205.152.59.73] verified) by logan.com (CommuniGate Pro SMTP 5.1c.5) with ESMTP id 1448434 for flyrotary@lancaironline.net; Sat, 07 Oct 2006 16:33:09 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.73; envelope-from=atlasyts@bellsouth.net Received: from ibm69aec.bellsouth.net ([70.149.5.177]) by imf25aec.mail.bellsouth.net with ESMTP id <20061007203250.NGAD19369.imf25aec.mail.bellsouth.net@ibm69aec.bellsouth.net> for ; Sat, 7 Oct 2006 16:32:50 -0400 Received: from [192.168.0.219] (really [70.149.5.177]) by ibm69aec.bellsouth.net with ESMTP id <20061007203250.YMFB24865.ibm69aec.bellsouth.net@[192.168.0.219]> for ; Sat, 7 Oct 2006 16:32:50 -0400 Mime-Version: 1.0 (Apple Message framework v752.2) In-Reply-To: References: Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit From: Bulent Aliev Subject: Re: [FlyRotary] Re: Smog pump failure Date: Sat, 7 Oct 2006 16:32:48 -0400 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.752.2) People flying with these smog pumps should know that their failure mode is only one: Full lock up. Buly On Oct 7, 2006, at 4:27 PM, Bulent Aliev wrote: > How about a small alternator instead? > Buly > > On Oct 7, 2006, at 4:21 PM, John Slade wrote: > >> Flying at 6000' near my home field last weekend, I noticed that >> coolant temp was climbing past 230F. I descended at idle and >> landed normally. >> >> Investigation shows that my smog pump (used for vacuum) had >> seized. With the clutch released it turns normally. Close the >> clutch and it locks up solid. This took out the serpentine belt >> (melted and charred where it spun on the engine pulley), which >> obviously took out the water pump and alternator. Not what I'd >> call a benign failure mode! >> >> I plan to get rid of the smog pump in favor of a Dynon or >> similiar, but will need an idler gear to route the belt. The >> alternative is to replace the smog pump, then just let it idle >> when I install the electric attitude / giro. >> >> Does anyone have a 2nd gen smog pump they'd like to sell? >> >> John Slade >> Turbo Rotary Cozy IV >> 81 hours. >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/