X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 13 Sep 2010 08:34:43 -0400 Message-ID: X-Original-Return-Path: Received: from web57506.mail.re1.yahoo.com ([66.196.100.73] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with SMTP id 4464825 for lml@lancaironline.net; Mon, 13 Sep 2010 08:14:51 -0400 Received-SPF: none receiver=logan.com; client-ip=66.196.100.73; envelope-from=casey.gary@yahoo.com Received: (qmail 75587 invoked by uid 60001); 13 Sep 2010 12:14:14 -0000 DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=pSJjcJaQP1EujGT9B81S8vINhdQcGi2oo+N1ZpFiktwHKKxX20RXPvQEO5XXqe9TJC7h1R0GVjzmlfgaNA9SnMHo8m2aqb7EbE+ieIjbdaLdKQTjhqrc2RTxg2Cgw+Exxb72N+my+32Re0dW9qXXIE4GXAdAkVg69ddq1DWqmt4=; X-Original-Message-ID: <644834.74712.qm@web57506.mail.re1.yahoo.com> X-YMail-OSG: DpQxLrcVM1k9o7tGXy31QNVF5XFE7uSiAo08bOxGwRV.pSY vyIJOJx5UKWTa5UG3mMLY0HAzFvqx_CmfpQ1wRAUHSTu_WJzJHlO3BAKFYpG K7NBnFYZ_kLy4IjcNhiiEijgcVtzjsj6O7oGV1bfPQp5FgnV4Ejkp21owewv EBpzGRi27noALdx2ex8V_Yv8KB6jHhIWhMkSQnkuwlEjx8CKGXvD3813mz2I DZw7dRutV2p9JhbaNhGAL3EAqPbf5Hz69mna4WQqXNEy0g7Fa9A-- Received: from [97.122.180.44] by web57506.mail.re1.yahoo.com via HTTP; Mon, 13 Sep 2010 05:14:14 PDT X-Mailer: YahooMailRC/470 YahooMailWebService/0.8.105.279950 References: X-Original-Date: Mon, 13 Sep 2010 05:14:14 -0700 (PDT) From: Gary Casey Subject: Re: Engine failure ATC Transcript Super Legacy Twin Turbo TSIO 580 X-Original-To: Lancair Mailing List In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-333192285-1284380054=:74712" --0-333192285-1284380054=:74712 Content-Type: text/plain; charset=us-ascii I've often wondered why the hoses aren't mechanically tied together. In race cars and such I've seen tabs welded to the pipes with a link that connects the two pipes together. Then the hose only has to contain the pressure, not hold the pipes together. The force pulling the pipes apart can be 50 pounds or more and the only thing holding that is the hose clamp. Providing a mechanical retention at the turbo outlet is not as easy, but not impossible either. Gary Climbing over Mt. Ranier at 17k feet, one of the turbo hoses blew off. I didn't know that at the time. All I knew is that I was climbing over Ranier (a 14,500 foot volcano with no landing areas near by) and was thrown forward in the seat as my manifold pressure went from 37 inches to 22. .... A de-cowling revealed the slipped hose. It only came off about 1/4th inch, but that obviously was enough to lose all turbo boost. I slipped the hose back on and tightened the hell out of it, re-safety wired it, and have flown happily every since. John Hafen --0-333192285-1284380054=:74712 Content-Type: text/html; charset=us-ascii
I've often wondered why the hoses aren't mechanically tied together.  In race cars and such I've seen tabs welded to the pipes with a link that connects the two pipes together.  Then the hose only has to contain the pressure, not hold the pipes together.  The force pulling the pipes apart can be 50 pounds or more and the only thing holding that is the hose clamp.  Providing a mechanical retention at the turbo outlet is not as easy, but not impossible either.
Gary

Climbing over Mt. Ranier at 17k feet, one of the turbo hoses blew off. I didn't know that at the time.  All I knew is that I was climbing over Ranier (a 14,500 foot volcano with no landing areas near by) and was thrown forward in the seat as my manifold pressure went from 37 inches to 22.
....
A de-cowling revealed the slipped hose.  It only came off about 1/4th inch, but that obviously was enough to lose all turbo boost.  I slipped the hose back on and tightened the hell out of it, re-safety wired it, and have flown happily every since.

John Hafen

--0-333192285-1284380054=:74712--