X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from EXHUB003-4.exch003intermedia.net ([207.5.74.111] verified) by logan.com (CommuniGate Pro SMTP 5.3.11) with ESMTPS id 4671108 for flyrotary@lancaironline.net; Tue, 11 Jan 2011 12:51:41 -0500 Received-SPF: none receiver=logan.com; client-ip=207.5.74.111; envelope-from=jwhaley@datacast.com Received: from EXVMBX003-5.exch003intermedia.net ([207.5.74.45]) by EXHUB003-4.exch003intermedia.net ([207.5.74.111]) with mapi; Tue, 11 Jan 2011 09:51:03 -0800 From: Jeff Whaley To: 'Rotary motors in aircraft' Date: Tue, 11 Jan 2011 09:52:05 -0800 Subject: RE: Broken Tension Bolt ... update Thread-Topic: RE: Broken Tension Bolt ... update Thread-Index: AcuxuEKYcFupijfkRdWVNq8OjYECww== Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_C03ABB0A7362B84BB53D544B3C305E0E0179F278432EEXVMBX0035e_" MIME-Version: 1.0 --_000_C03ABB0A7362B84BB53D544B3C305E0E0179F278432EEXVMBX0035e_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable So far no luck at getting the broken tension bolt threaded end out of the f= ront casting. With help from Cary Beazley, we were able to back out the br= oken part a little bit with just pressure and mating the two surfaces toget= her, until it jammed and would come no further. Not having (or knowing abo= ut) LH drill bits at the time, we decided to RH drill a pilot hole for an e= asy-out. Drilling the hole was no problem but getting it centered was, so = it's drilled off-center and the broken piece is now probably bottomed out i= n the casting. The easy-out is simply not latching onto the bolt. We're g= oing to borrow a bore scope to get a better look. After that I'll have to = make a long center-punch and try to make a new (centered) pilot hole with t= he long LH drill bits on-order (see link) ... hopefully they'll grab onto t= he part and extract it, otherwise it will be an engine tear-down, which I d= read at any time but at -10C it's no fun at all. http://www.icscuttingtools.com/catalog/page_110.pdf Jeff Whaley __________ Information from ESET NOD32 Antivirus, version of virus signatur= e database 5778 (20110111) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com This message, and the documents attached hereto, is intended only for the a= ddressee and may contain privileged or confidential information. Any unauth= orized disclosure is strictly prohibited. If you have received this message= in error, please notify us immediately so that we may correct our internal= records. Please then delete the original message. Thank you. --_000_C03ABB0A7362B84BB53D544B3C305E0E0179F278432EEXVMBX0035e_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

So far no luck at getting the broken tension bolt th= readed end out of the front casting.  With help from Cary Beazley, we = were able to back out the broken part a little bit with just pressure and m= ating the two surfaces together, until it jammed and would come no further.  Not having (or knowing about) L= H drill bits at the time, we decided to RH drill a pilot hole for an easy-o= ut.  Drilling the hole was no problem but getting it centered was, so = it’s drilled off-center and the broken piece is now probably bottomed out in the casting.  The easy-out is simply = not latching onto the bolt.  We’re going to borrow a bore scope = to get a better look.  After that I’ll have to make a long cente= r-punch and try to make a new (centered) pilot hole with the long LH drill bits on-order (see link) … hopefully they’ll gra= b onto the part and extract it, otherwise it will be an engine tear-down, w= hich I dread at any time but at -10C it’s no fun at all.

 

http://www.icscuttingtools.com/catalog/page_110.pdf<= o:p>

 

Jeff Whaley



__________ Information from ESET NOD32 Antivirus, version of virus signatur= e database 5778 (20110111) __________

The message was checked by ESET NOD32 Antivirus.

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This message, and the docum= ents attached hereto, is intended only for the addressee and may contain pr= ivileged or confidential information. Any unauthorized disclosure is strict= ly prohibited. If you have received this message in error, please notify us immediately so that we may correct our = internal records. Please then delete the original message. Thank you.
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