X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.25.9.102] (HELO ms-smtp-03-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 971932 for flyrotary@lancaironline.net; Mon, 06 Feb 2006 08:33:45 -0500 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.102; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-025-165.carolina.res.rr.com [24.74.25.165]) by ms-smtp-03-eri0.southeast.rr.com (8.13.4/8.13.4) with SMTP id k16DWvEV028807 for ; Mon, 6 Feb 2006 08:32:59 -0500 (EST) Message-ID: <000701c62b21$d8a07f70$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Tension bolt protection sheet was Re: [FlyRotary] Re: Torque and torque sequence Date: Mon, 6 Feb 2006 08:32:58 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0004_01C62AF7.EF7E2C30" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0004_01C62AF7.EF7E2C30 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable =20 Al, I understand your problem with the loose bolts. The thing I need to = mention is why would anyone have a main engine external bolt or nut that = isn't safety wired? I plan to wire all my nuts as this will prevent = anything from falling out if a stud does break. Bill Jepson Hi Bill, I used a technique the rotary racing crowd uses to prevent a stud/bolt = from backing out of the engine into the flywheel/flex plate. A thin = sheet of steel (aluminum might do) the area of which covers all the = tension bolts is used to cover the engine tension bolt heads. This = sheet is attached using the using the rear main bearing/gear support = bolts. This sheet prevents any bolt from backing out should it break. = I put a spot of silicone on head of each bolt to dampen any vibration of = the sheet. I recall at least one incident where a tension bolt did back out, but = fortunately the individual (Perry Mic, I believe) was using the 35 lb = manual flywheel which simply bent the bolt out of the way. A flex plate = may not survive such an encounter. Ed=20 Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ------=_NextPart_000_0004_01C62AF7.EF7E2C30 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
Al,
I understand your problem with the loose bolts. The thing I need = to=20 mention is why would anyone have a main engine external bolt or nut = that isn't=20 safety wired?  I plan to wire all my nuts as this will = prevent=20 anything from falling out if a stud does break.
Bill Jepson
 
Hi Bill,
 
I used a technique the rotary racing crowd uses to = prevent a=20 stud/bolt from backing out of the engine into the flywheel/flex = plate. =20  A thin sheet of steel (aluminum might do) the area of which = covers all=20 the tension bolts is used to cover  the engine tension bolt = heads. =20 This sheet is attached using the  using the rear main = bearing/gear=20 support bolts.  This sheet prevents any bolt from backing out = should it=20 break.  I put a spot of silicone on head of each bolt to dampen = any=20 vibration of the sheet.
 
I recall at least one incident  where a = tension bolt=20 did back out, but fortunately the individual (Perry Mic, I believe) = was using=20 the 35 lb manual flywheel which simply bent the bolt out of the = way.  A=20 flex plate may not survive such an encounter.
 
Ed
 
Ed Anderson
Rv-6A N494BW Rotary = Powered
Matthews,=20 NC
eanderson@carolina.rr.com
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