X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [65.54.250.91] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 972334 for flyrotary@lancaironline.net; Mon, 06 Feb 2006 13:42:27 -0500 Received-SPF: pass receiver=logan.com; client-ip=65.54.250.91; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Mon, 6 Feb 2006 10:41:41 -0800 Message-ID: Received: from 4.171.174.86 by BAY115-DAV19.phx.gbl with DAV; Mon, 06 Feb 2006 18:41:40 +0000 X-Originating-IP: [4.171.174.86] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Tension bolt protection sheet Date: Mon, 6 Feb 2006 13:41:39 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0010_01C62B23.0E8959D0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.10.0011.1703 Seal-Send-Time: Mon, 6 Feb 2006 13:41:39 -0500 X-OriginalArrivalTime: 06 Feb 2006 18:41:41.0100 (UTC) FILETIME=[F85D22C0:01C62B4C] This is a multi-part message in MIME format. ------=_NextPart_000_0010_01C62B23.0E8959D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Tracy Crook wrote: > Just another point of view. > If the tension bolts are installed with the recommended procedure of = > putting a spiral bead of RTV on them to prevent vibration fatigue, = the=20 > bolt is not likely to break in the first place. If somehow it does=20 > anyway, they always (AFAIK) break at the threaded end. The RTV will = > prevent the bolt from backing out. > =20 RTV sets by evaporating a carrier, doesn't it? How would it cure in = an=20 airtight bolt hole? Is it supposed to be allowed to cure before the=20 bolt is inserted? --=20 ,|"|"|, Ernest Christley | Nope. You're grossly over estimating the amount of air required for = curing. And I don't think the curing process involves evaporation. = More like a catalytic reaction with moisture / air. There is more than = enough to get the job done in the cavities of the 13B block. It's not a = close tolerance hole.=20 Tracy (wishing my RV-8 prop would arrive) ------=_NextPart_000_0010_01C62B23.0E8959D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 

Tracy Crook wrote:

> Just another point of = view.
> If the=20 tension bolts are installed with the recommended procedure of
> = putting=20 a spiral bead of RTV on them to prevent vibration fatigue, the =
> bolt=20 is not likely to break in the first place. If somehow it does
> = anyway,=20 they always (AFAIK) break at the threaded end.  The RTV will =
>=20 prevent the bolt from backing out.
> 

RTV sets by=20 evaporating a carrier, doesn't it?  How would it cure in an =
airtight=20 bolt hole?  Is it supposed to be allowed to cure before the =
bolt is=20 inserted?

-- =
        =20 = ,|"|"|,           =    =20 Ernest Christley     |
Nope.  You're grossly over estimating the amount of air = required for=20 curing.  And I don't think the = curing process involves=20 evaporation.  More like a catalytic reaction with moisture /=20 air. There is more than enough to get the job done in the = cavities of the=20 13B block.  It's not a close tolerance hole. 
 
Tracy  (wishing my RV-8 prop would=20 arrive)
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