X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 23 Jan 2012 12:36:54 -0500 Message-ID: X-Original-Return-Path: Received: from raven.ravenwebhosting.com ([72.9.254.67] verified) by logan.com (CommuniGate Pro SMTP 5.4.3) with ESMTPS id 5361277 for lml@lancaironline.net; Mon, 23 Jan 2012 12:24:46 -0500 Received-SPF: none receiver=logan.com; client-ip=72.9.254.67; envelope-from=paul@tbm700.com Received: from 216.192.189.72.cfl.res.rr.com ([72.189.192.216]:53645 helo=[192.168.1.103]) by raven.ravenwebhosting.com with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.69) (envelope-from ) id 1RpNcn-00071M-FG for lml@lancaironline.net; Mon, 23 Jan 2012 12:24:09 -0500 From: paul miller Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: multipart/alternative; boundary=Apple-Mail-21--1007590551 Subject: Re: [LML] Re: Engine mounts legacy X-Original-Date: Mon, 23 Jan 2012 12:24:03 -0500 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: X-Mailer: Apple Mail (2.1084) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - raven.ravenwebhosting.com X-AntiAbuse: Original Domain - lancaironline.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - tbm700.com X-Source: X-Source-Args: X-Source-Dir: --Apple-Mail-21--1007590551 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Scott: thanks, that makes sense because I believe I want to see some = threads out the top of the mount to confirm full engagement. On a related topic, is there any reason not to use AN7H drilled bolts = (in the head) in order to lockwire the engine mounts versus adding the = unique lock tab washers that are more difficult to obtain? I can't see = any reason not to use the drilled bolts beyond the $4 cost from Spruce. = On other aircraft, I note we use a lock tab washer that fits into the = hole on the isolator and those are an MS standard. But Lancair specs an = additional washer between the isolator and bolt head hence the hybrid = lock tab washer requirement. An AN7H bolt would seem to be a simple = answer to avoid the lock tab washer. I'm betting someone has already = been down this road? Paul On 2012-01-23, at 12:16 PM, Sky2high@aol.com wrote: > Paul, > =20 > AN7 bolts in tension should be torqued to 450-500 inch lbs. Make sure = no more that three threads show - otherwise there is danger that the nut = has been torqued to the shoulder of the bolt rather than holding the = bolt in proper tension. > =20 > Scott Krueger > =20 > In a message dated 1/23/2012 6:50:46 A.M. Central Standard Time, = paul@tbm700.com writes: > Reinstalling isolators on the io550 and cannot see any specs for the = AN7 bolts for torque or threads. Do they get torqued or just threaded = through top of the engine mount? Thx > Paul > -- > For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html --Apple-Mail-21--1007590551 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii Sky2high@aol.com wrote:
Paul,
 
AN7 bolts in tension should be torqued to 450-500 inch lbs.  = Make sure=20 no more that three threads show - otherwise there is danger that the nut = has=20 been torqued to the shoulder of the bolt rather than holding the bolt in = proper=20 tension.
 
Scott Krueger
 
In a message dated 1/23/2012 6:50:46 A.M. Central Standard Time,=20 paul@tbm700.com writes:
Reinstalling isolators on = the io550 and cannot see any specs for=20 the AN7 bolts for torque or threads.  Do they get torqued or just=20= threaded through top of the engine mount? Thx
Paul
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For = archives=20 and unsub=20 http://mail.= lancaironline.net:81/lists/lml/List.html

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