X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-tul01m020-f180.google.com ([209.85.214.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with ESMTPS id 5392685 for flyrotary@lancaironline.net; Sun, 12 Feb 2012 00:08:37 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.180; envelope-from=david.staten@gmail.com Received: by obbuo19 with SMTP id uo19so5770868obb.25 for ; Sat, 11 Feb 2012 21:08:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type; bh=3f8+BIoF6OCiemJXDvqAqeKc3MBjLwMj+A6sFf9o/4g=; b=p/LkremRNr584FMf6AO7QXfos10wkRX0Ce+IjZDi79rMA0gcW4l8gnGTnpOvnfY8fo g20T0fqbdXthcdAynyCxr6hrAS7lTTF0vUgwRI4GuAzfQFa2zR3rZmAnA6xKESbhWxRv 3pl/nA4bQrH7giJ2+6Tj3xs6qgpx8BhC7Eg4o= Received: by 10.182.17.100 with SMTP id n4mr7731186obd.45.1329023278718; Sat, 11 Feb 2012 21:07:58 -0800 (PST) Return-Path: Received: from [127.0.0.1] (c-98-197-231-39.hsd1.tx.comcast.net. [98.197.231.39]) by mx.google.com with ESMTPS id y3sm287581obx.4.2012.02.11.21.07.57 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 11 Feb 2012 21:07:57 -0800 (PST) Message-ID: <4F37492E.1040002@gmail.com> Date: Sat, 11 Feb 2012 23:07:58 -0600 From: Dave User-Agent: Mozilla/5.0 (Windows NT 6.0; rv:9.0) Gecko/20111222 Thunderbird/9.0.1 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: E-Shaft Lock Bolt HELP! References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------010505050905070105000102" This is a multi-part message in MIME format. --------------010505050905070105000102 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Heres the secret.......... You need a BIG impact wrench. I had the same problem. I tried using a 3/8 impact and let it run on forever.. never budged it. Tried a 5 foot cheater pipe on a breaker bar.. ended up just moving/levering the engine instead of messing with the bolt... Ended up going to the pawn shop and getting a BIG impact.. I think it had a 3/4" drive lug on it..... one pull of the trigger for half a second and it zipped off. You should be able to find one in a pawn shop for under $100 usd. 2/11/2012 5:24 PM, Chad Robinson wrote: > I don't understand what you mean when you say you're removing the > e-shaft lock nut by turning the pulley boss and you don't have a > flywheel. The flywheel nut is the high-torque 54mm beasties on the > outside-threaded end of the shaft. Then there's a 90lb or so bolt with > a much smaller head on the other end. What are you removing? Pics? > -- > Sent from my cell. Please excuse my brevity. > > Gordon Alling wrote: > > I am tearing down a 13B (1^st time) and have spent the last few > hours trying to remove the eccentric shaft lock bolt.Is there some > secret to it that someone can share?I don’t have a flywheel for > the engine so I am holding the shaft with a pipe wrench on the > pulley boss.I have bent the handle on my 3/8 drive ratchet and > couldn’t break it with a 24” breaker bar and a 5’ extension.I > cranked-up my compressor and couldn’t do it with my impact > wrench.I tried turning clockwise to convince myself that it isn’t > reverse threaded. I would try heating but my torch won’t stay lit > for some reason (another thing to fix). > > Does anyone have a magic trick to get past this hurdle? > > Is there any reason that holding the pulley boss would prevent the > lock bolt from turning? > > Any and all suggestions are appreciated. > > Gordon C. Alling, Jr., PE > > President > > *acumen**/Engineering/Analysis, Inc./* > > 540-786-2200 > > www.acumen-ea.com > --------------010505050905070105000102 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Heres the secret.......... You need a BIG impact wrench.

I had the same problem. I tried using a 3/8 impact and let it run on forever.. never budged it. Tried a 5 foot cheater pipe on a breaker bar.. ended up just moving/levering the engine instead of messing with the bolt...

Ended up going to the pawn shop and getting a BIG impact.. I think it had a 3/4" drive lug on it.....

one pull of the trigger for half a second and it zipped off. You should be able to find one in a pawn shop for under $100 usd.

2/11/2012 5:24 PM, Chad Robinson wrote:
I don't understand what you mean when you say you're removing the e-shaft lock nut by turning the pulley boss and you don't have a flywheel. The flywheel nut is the high-torque 54mm beasties on the outside-threaded end of the shaft. Then there's a 90lb or so bolt with a much smaller head on the other end. What are you removing? Pics?
--
Sent from my cell. Please excuse my brevity.

Gordon Alling <gordon@acumen-ea.com> wrote:

I am tearing down a 13B (1st time) and have spent the last few hours trying to remove the eccentric shaft lock bolt.  Is there some secret to it that someone can share?  I don’t have a flywheel for the engine so I am holding the shaft with a pipe wrench on the pulley boss.  I have bent the handle on my 3/8 drive ratchet and couldn’t break it with a 24” breaker bar and a 5’ extension.  I cranked-up my compressor and couldn’t do it with my impact wrench.  I tried turning clockwise to convince myself that it isn’t reverse threaded.  I would try heating but my torch won’t stay lit for some reason (another thing to fix).

 

Does anyone have a magic trick to get past this hurdle? 

 

Is there any reason that holding the pulley boss would prevent the lock bolt from turning?

 

Any and all suggestions are appreciated.

 

Gordon C. Alling, Jr., PE

President

acumen Engineering/Analysis, Inc.

 

540-786-2200

www.acumen-ea.com

 


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