Return-Path: Received: from [65.54.169.102] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3067642 for flyrotary@lancaironline.net; Sun, 07 Mar 2004 11:39:43 -0500 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Sun, 7 Mar 2004 08:39:40 -0800 Received: from 64.159.105.65 by bay3-dav72.bay3.hotmail.com with DAV; Sun, 07 Mar 2004 16:39:40 +0000 X-Originating-IP: [64.159.105.65] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: E shaft nut Date: Sun, 7 Mar 2004 11:39:40 -0500 MIME-Version: 1.0 X-Mailer: MSN Explorer 7.02.0011.2700 Content-Type: multipart/alternative; boundary="----=_NextPart_001_0007_01C40438.E0634BA0" Message-ID: X-OriginalArrivalTime: 07 Mar 2004 16:39:40.0576 (UTC) FILETIME=[C96B1200:01C40462] ------=_NextPart_001_0007_01C40438.E0634BA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable > Y'know that massive nut that everyone has trouble getting off? > Any tips on how to get it on? > Tracy says 350 ft pounds. Phew. That's me jumping on the end of my torq= ue > wrench. > How do I hold the shaft / counterweights / airplane still while I do th= is? > Any suggestions on where to get a 2 1/8 socket? That size seems to be > missing from my $9 socket set :) > Regards, > John Slade (torquing up a storm) > > John, most auto parts stores (real auto stores) will have a 2 1/8" sock= et, sometimes they are a bit pricy thought - might try one that caters to pickups and trucks. What I suggest is to get a plus 700 lb-ft air wrenc= h (borrow or rent - a smaller one may do, but most with a 1/2" socket are t= oo weak). It will spin the nut off in 3 beats and you dont' have to anchor = the motor, the motor's inertia is sufficient to counteract the torque with an air wrench. Ed Anderson One more tip on this. Install nut firmly with hand wrench as tight as pr= actical (~ 100 ft lbs) then use impact wrench to turn nut ONE side (1/6 = turn). Make mark on socket & counterweight so you can watch this happen. = This is real close to 350 ft lbs. Tracy Crook ------=_NextPart_001_0007_01C40438.E0634BA0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
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> Y'know that massive nut that everyone has trouble gettin= g off?
> Any tips on how to get it on?
> Tracy says 350 ft po= unds. Phew. That's me jumping on the end of my torque
> wrench.
= > How do I hold the shaft / counterweights / airplane still while I do= this?
> Any suggestions on where to get a 2 1/8 socket? That size = seems to be
> missing from my $9 socket set :)
> Regards,
= > John Slade (torquing up a storm)
>
> John, most auto par= ts stores (real auto stores) will have a 2 1/8" socket,
sometimes they= are a bit pricy thought - might try one that caters to
pickups and tr= ucks.   What I suggest is to get a plus 700 lb-ft air wrench(borrow or rent - a smaller one may do, but most with a 1/2" socket are = too
weak).  It will spin the nut off in 3 beats and you dont' hav= e to anchor the
motor, the motor's inertia is sufficient to counteract= the torque with an
air wrench.

Ed Anderson

One more tip= on this.  Install nut firmly with hand wrench as tight as practical= (~ 100 ft lbs)  then use impact wrench to turn nut ONE side (1/6 tu= rn). Make mark on socket & counterweight so you can watch this happen=   This is real close to 350 ft lbs.

Tracy Crook

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