X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-03.southeast.rr.com ([24.25.9.102] verified) by logan.com (CommuniGate Pro SMTP 5.1c.3) with ESMTP id 1364335 for flyrotary@lancaironline.net; Tue, 05 Sep 2006 10:56:12 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.102; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-111-186.carolina.res.rr.com [24.74.111.186]) by ms-smtp-03.southeast.rr.com (8.13.6/8.13.6) with SMTP id k85EtBYD000570 for ; Tue, 5 Sep 2006 10:55:13 -0400 (EDT) Message-ID: <000401c6d0fb$4f86f090$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Engine alignment Date: Tue, 5 Sep 2006 10:55:21 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C6D0D9.C8242350" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C6D0D9.C8242350 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dale, Boy, seems like a lot of work either way. I am not certain you need = that kind of accuracy (particularly for a test stand). I think I would = determine the center of the e shaft (pretty easy to do with the flywheel = nut on) and perhaps a bit harder on the pulley end (depending on whether = a stock or after market pulley) and then hang the engine and use a = carpenter's square (or something similar) attached to your firewall (or = front end) wherever you want the e shaft center line to be. Then align = the engine until the flywheel nut center line and pulley center line = with your reference (T square point). =20 Ed ----- Original Message -----=20 From: Dale Rogers=20 To: Rotary motors in aircraft=20 Sent: Tuesday, September 05, 2006 10:09 AM Subject: [FlyRotary] Engine alignment Hi All, Okay, I admit I'm taking the easy way out. I haven't done an=20 exhaustive search of the archives. Is there an easy way to=20 ascertain the eccentric shaft centerline, for purposes of designing=20 an engine mount? I've decided I want to try a plugs-up mount for=20 my test stand. Some things might be easier to fit in, using that=20 orientation. So far, only two strategies have come to mind: take the eccentric=20 shaft out, and replace it with two apertures; or machine a pointed=20 mandrel which can be bolted to the pulley flange. Dale R. COZY MkIV #1254 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ ------=_NextPart_000_0001_01C6D0D9.C8242350 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Dale,

Boy, seems like a lot of = work either=20 way. I am not certain you need that kind of accuracy (particularly = for a=20 test stand). I think I would determine the center of the e shaft = (pretty=20 easy to do with the flywheel nut on) and perhaps a bit harder on the = pulley end=20 (depending on whether a stock or after market pulley) and then hang the = engine=20 and use a carpenter's square (or something similar) attached to your = firewall=20 (or front end) wherever you want the e shaft center line to be. = Then align=20 the engine until the flywheel nut center line and pulley center line = with your=20 reference (T square point).

----- Original Message -----
From:=20 Dale = Rogers
To: Rotary motors in = aircraft

Sent: Tuesday, September 05, = 2006 10:09=20 AM

Subject: [FlyRotary] Engine=20 alignment

Hi All,

Okay, I admit I'm taking = the easy=20 way out. I haven't done an
exhaustive search of the = archives. =20 Is there an easy way to
ascertain the eccentric shaft centerline, = for=20 purposes of designing
an engine mount? I've decided I want = to try a=20 plugs-up mount for
my test stand. Some things might be = easier to fit=20 in, using that
orientation.

So far, only two=20 strategies have come to mind: take the eccentric
shaft out, and = replace it=20 with two apertures; or machine a pointed
mandrel which can be = bolted to=20 the pulley flange.

Dale R.
COZY MkIV #1254

-- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/

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