X-Virus-Scanned: clean according to Sophos on Logan.com From: "Bob Darrah" Received: from [107.14.166.231] (HELO cdptpa-oedge-vip.email.rr.com) by logan.com (CommuniGate Pro SMTP 6.1.8) with ESMTP id 8294818 for flyrotary@lancaironline.net; Fri, 01 Jan 2016 23:52:27 -0500 Received-SPF: pass receiver=logan.com; client-ip=107.14.166.231; envelope-from=rdarrah@austin.rr.com Return-Path: Received: from [70.112.148.54] ([70.112.148.54:50483] helo=BobPC) by cdptpa-oedge01 (envelope-from ) (ecelerity 3.5.0.35861 r(Momo-dev:tip)) with ESMTP id 79/18-26779-B7757865; Sat, 02 Jan 2016 04:52:11 +0000 Message-ID: <4E6C564F8A8345F9B0135FBAFE58BAF2@BobPC> To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: 20B Rebuild Date: Fri, 1 Jan 2016 22:52:00 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0028_01D144E7.066806F0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3555.308 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3555.308 X-RR-Connecting-IP: 107.14.168.118:25 X-Cloudmark-Score: 0 This is a multi-part message in MIME format. ------=_NextPart_000_0028_01D144E7.066806F0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 20B crank separation, about the only difference when compared to a 13B It can be done. You do need to make yourself a crankshaft puller. Mine = consisted of a threaded rod, about a foot long (it=E2=80=99s been = several years, I may be off on that)=E2=80=99 one end has to be = threaded to fit the shaft, I think it is a 17 mm thread, but it is the = same as the spark plug. Use a heavy (mine was a 1 x 4 piece of steel = about a foot long-an overkill, but that is what I had) pry bar. Drill a = sloppy fit hole in one end that your threaded rod will loosely fit. When you are ready to separate the shaft, screw the threaded rod into = the hole in the shaft, pad the end of the shaft, place the pry bar over = the threaded rod, even with and across the end of the shaft, and run a = nut down the threaded rod to the pry bar. Pound on end of pry bar. Now, if this doesn=E2=80=99t thoroughly confuse you, and everyone else, = I=E2=80=99d be surprised, but is is doable. Good luck! Bob=20 ------=_NextPart_000_0028_01D144E7.066806F0 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
20B crank separation, about the only difference when compared to a=20 13B
 
It can be done.  You do need to make yourself a crankshaft=20 puller.  Mine consisted of a threaded rod, about a foot long = (it=E2=80=99s been=20 several years, I may be off on that)=E2=80=99  one end has to be = threaded to fit=20 the shaft, I think it is a 17 mm thread, but it is the same as the spark = plug.  Use a heavy (mine was a 1 x 4 piece of steel about a foot = long-an=20 overkill, but that is what I had) pry bar.  Drill a sloppy fit hole = in one=20 end that your threaded rod will loosely fit.
 
When you are ready to separate the shaft, screw the threaded rod = into the=20 hole in the shaft, pad the end of the shaft, place the pry bar over the = threaded=20 rod, even with and across the end of the shaft, and run a nut down the = threaded=20 rod to the pry bar.  Pound on end of pry bar.
 
Now, if this doesn=E2=80=99t thoroughly confuse you, and everyone = else, I=E2=80=99d be=20 surprised, but is is doable.
 
Good luck!
 
Bob
 
 
 
 
 
 
 
 
 
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