X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao102.cox.net ([68.230.241.44] verified) by logan.com (CommuniGate Pro SMTP 5.3.4) with ESMTP id 4174094 for flyrotary@lancaironline.net; Mon, 22 Mar 2010 00:32:19 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.44; envelope-from=alventures@cox.net Received: from fed1rmimpo01.cox.net ([70.169.32.71]) by fed1rmmtao102.cox.net (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20100322043143.LLVZ23007.fed1rmmtao102.cox.net@fed1rmimpo01.cox.net> for ; Mon, 22 Mar 2010 00:31:43 -0400 Received: from BigAl ([72.192.128.205]) by fed1rmimpo01.cox.net with bizsmtp id w4Xg1d00Q4S1t5C034Xi1a; Mon, 22 Mar 2010 00:31:42 -0400 X-VR-Score: 0.00 X-Authority-Analysis: v=1.1 cv=9X1BeRvGVdXikaVgI7mHUqmIOlosh/BCISq12UegNM8= c=1 sm=1 a=DvXKY4kB2HcA:10 a=Vegc0WxVmH5BHtpNDyThtA==:17 a=EJ0Bhf2OlXcTCrRKVboA:9 a=C97-ocKLxB9nizFNn5UA:7 a=TQ902Zm5jN3I1uc5HKf11eW4Al0A:4 a=CjuIK1q_8ugA:10 a=6qOIBShBCupdRBd_sokA:9 a=U736oMLhzupA7GkITAoA:7 a=kyhOmr43xn7_cv008IpS-R1bwFcA:4 a=Vegc0WxVmH5BHtpNDyThtA==:117 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Fwd: Question on RD2-C Date: Sun, 21 Mar 2010 21:31:21 -0800 Message-ID: <93D9B5D0B16D4B94A0FC7EFFCE7098E0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0008_01CAC93D.DAFA3860" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6856 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 In-Reply-To: Importance: Normal Thread-Index: AcrJc3G73vPIpyFLQE+DyWbNvgAjGQACblEg This is a multi-part message in MIME format. ------=_NextPart_000_0008_01CAC93D.DAFA3860 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Sorry guys my system glitched. I sent the e-mail too soon. An adjustable reamer is available at most machining supply places. The bolts may be slightly different, but you can buy a few extra to get some of the same size. Get some jet nuts or be sure you locktite or safety wire the nuts = too. Bill Jepson Just another view on this; custom fitting and reaming each of 20 holes individually for the bolts may work for a few individual fixes, but is certainly not a production solution. Nor do I think safety wiring the = 20 bolts (which are visible) is necessary or practical where metal locknuts would be perfectly reliable. Cold forming steel rivets are not as strong = as AN bolts, not definitely more easily adapted to doing very many of these parts. =20 But let's not get ahead of ourselves. Is this an issue with any = urgency? Does this issue apply to more than a few cases of 3-rotor and = turbocharged 2 rotors? Tracy has what - more than 800 hours on one of these drives with aluminum rivets on a 13B and it's still good, so is it a matter of the number of hours? How many other high hour drives are there that should = be checked. How many hours are on 20B and 13B turbo installations. And = what is the best fix? Certainly Tracy has to have some time to weigh in on = that. =20 Al G ------=_NextPart_000_0008_01CAC93D.DAFA3860 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Sorry guys my system = glitched. I sent the e-mail too soon. An adjustable reamer is available at most = machining supply places. The bolts may be slightly different, but you can buy a = few extra to get some of the same size. = Get some jet nuts or be sure you locktite or safety wire the nuts = too.

Bill = Jepson

Just another view on this; custom fitting and reaming each of 20 holes individually for the bolts may work = for a few individual fixes, but is certainly not a production solution.  = Nor do I think safety wiring the 20 bolts (which are visible) is necessary or practical where metal locknuts would be perfectly reliable. Cold forming = steel rivets are not as strong as AN bolts, not definitely more easily adapted = to doing very many of these parts.

 

But let’s not get ahead of ourselves.  Is this an issue with any urgency?  Does this = issue apply to more than a few cases of 3-rotor and turbocharged 2 rotors? = Tracy has what = – more than 800 hours on one of these drives with aluminum rivets on a 13B and = it’s still good, so is it a matter of the number of hours? How many other = high hour drives are there that should be checked.  How many hours are on 20B = and 13B turbo installations.  And what is the best fix?  Certainly = Tracy has to have = some time to weigh in on that.

 

Al G

------=_NextPart_000_0008_01CAC93D.DAFA3860--