X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp108.sbc.mail.mud.yahoo.com ([68.142.198.106] verified) by logan.com (CommuniGate Pro SMTP 5.4c2a) with SMTP id 4832813 for flyrotary@lancaironline.net; Mon, 31 Jan 2011 13:07:52 -0500 Received-SPF: softfail receiver=logan.com; client-ip=68.142.198.106; envelope-from=echristley@nc.rr.com Received: (qmail 64013 invoked from network); 31 Jan 2011 18:07:17 -0000 Received: from [192.168.1.1] (echristley@74.242.203.218 with plain) by smtp108.sbc.mail.mud.yahoo.com with SMTP; 31 Jan 2011 10:07:16 -0800 PST X-Yahoo-SMTP: 40RP3pGswBDvPav1a.I8eMv.KS8bdgWBnCloVoKaow-- X-YMail-OSG: B6XTZE8VM1k_0RnBgwbnCVreytS.mxPTH3NHvwS.b4P.wCH ezpDkdET2645QF2_m3QqdkDfezjQNQLTb6rpitftlxY4yw3kXy0zwHo8sDc5 GMnBWImZRNSKbvFeWE3LocH59dLhrZr352F_Y8NjMJzGDFYqy1lRkJCIj5cl WgK0piWAXsm_05ccEk0.nqYt8SLMFvPocD.IEvA..5IKsKdDfRR06PyuW0h3 x2gsZ.AxIgLa7r96RyWwkizJ8bV0zpPkxOEgb3lqkcpI7NC8ykTDzhqVMnId 3rFYF5IzBIGq7RFt3xKNC3zcyNk23tdzu4GPyb06ZCs63uGnH X-Yahoo-Newman-Property: ymail-3 Message-ID: <4D46FC8B.7060709@nc.rr.com> Date: Mon, 31 Jan 2011 13:16:43 -0500 From: Ernest Christley Reply-To: echristley@att.net User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.14) Gecko/20101006 Thunderbird/3.0.9 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Tension Bolt Extracted ... what a relief! References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------000807000207060800050200" This is a multi-part message in MIME format. --------------000807000207060800050200 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 01/31/2011 12:26 PM, Jeff Whaley wrote: > > We were minutes away from an engine tear-down, when we tried one more > time to extract the broken tension bolt. The bore scope allowed us to > see exactly where the pilot hole was drilled into the broken piece; > the left-hand drill bits would not grab on and extract the part but > did help in enlarging the hole and perhaps loosening the threads a > little. Ultimately I was able to start an easy-out with light tapping > and it grabbed on – the result is in the attached photo. The easy-out > is welded to the end of the original broken bolt and you can see that > a spiral of RTV was applied to the length of the bolt between the > threads and the bolt head. > > Jeff > > There is nothing in this world that can not be solved by the correct application of an ever larger hammer. --------------000807000207060800050200 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit On 01/31/2011 12:26 PM, Jeff Whaley wrote:

We were minutes away from an engine tear-down, when we tried one more time to extract the broken tension bolt. The bore scope allowed us to see exactly where the pilot hole was drilled into the broken piece; the left-hand drill bits would not grab on and extract the part but did help in enlarging the hole and perhaps loosening the threads a little. Ultimately I was able to start an easy-out with light tapping and it grabbed on – the result is in the attached photo. The easy-out is welded to the end of the original broken bolt and you can see that a spiral of RTV was applied to the length of the bolt between the threads and the bolt head.

Jeff

There is nothing in this world that can not be solved by the correct application of an ever larger hammer.
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