X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.129.170.194] (HELO VIRCOM1.fcdata.private) by logan.com (CommuniGate Pro SMTP 5.4.4) with ESMTP id 5396814 for flyrotary@lancaironline.net; Tue, 14 Feb 2012 14:08:15 -0500 Received-SPF: none receiver=logan.com; client-ip=64.129.170.194; envelope-from=cbarber@texasattorney.net Received: from FCD-MAIL06.FCDATA.PRIVATE (unverified [172.16.5.23]) by VIRCOM1.fcdata.private (Vircom SMTPRS 5.1.1024.13396) with ESMTP id for ; Tue, 14 Feb 2012 13:07:17 -0600 X-Modus-BlackList: 172.16.5.23=OK;cbarber@texasattorney.net=OK X-Modus-RBL: 172.16.5.23=Excluded X-Modus-Trusted: 172.16.5.23=NO X-Modus-Audit: FALSE;0;0;0 Received: from FCD-MAIL05.FCDATA.PRIVATE ([fe80::809d:a06e:5913:452e]) by FCD-MAIL06.FCDATA.PRIVATE ([fe80::697f:d6aa:b87:78d8%17]) with mapi id 14.01.0355.002; Tue, 14 Feb 2012 13:07:24 -0600 From: Chris Barber To: Rotary motors in aircraft Subject: RE: [FlyRotary] Re: E-Shaft Lock Bolt HELP! Thread-Topic: [FlyRotary] Re: E-Shaft Lock Bolt HELP! Thread-Index: AQHM6URljiM6JjJiIEe9hXEi51eVe5Y8xE7g Date: Tue, 14 Feb 2012 19:07:28 +0000 Message-ID: <2D41F9BF3B5F9842B164AF93214F3D30E5C208E7@FCD-MAIL05.FCDATA.PRIVATE> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [69.148.239.2] Content-Type: multipart/alternative; boundary="_000_2D41F9BF3B5F9842B164AF93214F3D30E5C208E7FCDMAIL05FCDATA_" MIME-Version: 1.0 --_000_2D41F9BF3B5F9842B164AF93214F3D30E5C208E7FCDMAIL05FCDATA_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable I am just testing if the list is up or not. I have not had any messages si= nce Saturday....slow even for us. OH, and Dave is right about the big ol impact wrench. I do think it is a 3= /4. It is in my hangar for Houston local guys. It still takes a few secon= ds but darn near impossible without it. Chris Barber Houston ________________________________ From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of = Dave [david.staten@gmail.com] Sent: Saturday, February 11, 2012 11:07 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: E-Shaft Lock Bolt HELP! 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 foreve= r.. never budged it. Tried a 5 foot cheater pipe on a breaker bar.. ended u= p 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 l= ock nut by turning the pulley boss and you don't have a flywheel. The flywh= eel 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 othe= r end. What are you removing? Pics? -- Sent from my cell. Please excuse my brevity. Gordon Alling 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=92t have a flywheel for the engine so I am holdin= g the shaft with a pipe wrench on the pulley boss. I have bent the handle = on my 3/8 drive ratchet and couldn=92t break it with a 24=94 breaker bar an= d a 5=92 extension. I cranked-up my compressor and couldn=92t do it with m= y impact wrench. I tried turning clockwise to convince myself that it isn= =92t reverse threaded. I would try heating but my torch won=92t stay lit f= or 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 bol= t 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 --_000_2D41F9BF3B5F9842B164AF93214F3D30E5C208E7FCDMAIL05FCDATA_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

I am just testing if the list is up or not.  I have not had any mes= sages since Saturday....slow even for us.

 

OH, and Dave is right about the big ol impact wrench.  = I do think it is a 3/4.  It is in my hangar for Houston local guys.&nb= sp; It still takes a few seconds but darn near impossible without it.

 

Chris Barber

Houston

From: Rotary motors in aircraft [flyrotary@= lancaironline.net] on behalf of Dave [david.staten@gmail.com]
Sent: Saturday, February 11, 2012 11:07 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: E-Shaft Lock Bolt HELP!

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 foreve= r.. never budged it. Tried a 5 foot cheater pipe on a breaker bar.. ended u= p 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 lo= ck nut by turning the pulley boss and you don't have a flywheel. The flywhe= el 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? Pic= s?
--
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.&nb= sp; Is there some secret to it that someone can share?  I don=92t 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=92t break = it with a 24=94 breaker bar and a 5=92 extension.  I cranked-up my compressor and couldn=92t do it with my impact wrenc= h.  I tried turning clockwise to convince myself that it isn=92t reverse= threaded.  I would try heating but my torch won=92t stay lit for so= me 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 preven= t the lock bolt from turning?

 

Any and all suggestions are appreciated.

 

Gordon C. Al= ling, Jr., PE

President

acumen Engineering/Analysis, Inc.

 

540-786-2200=

= www.acumen-ea.com

 


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