X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-02.southeast.rr.com ([24.25.9.101] verified) by logan.com (CommuniGate Pro SMTP 5.1c.3) with ESMTP id 1364539 for flyrotary@lancaironline.net; Tue, 05 Sep 2006 12:35:05 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.101; 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-02.southeast.rr.com (8.13.6/8.13.6) with SMTP id k85GY4qM024717 for ; Tue, 5 Sep 2006 12:34:10 -0400 (EDT) Message-ID: <000601c6d109$22865e60$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Engine alignment Date: Tue, 5 Sep 2006 12:34:12 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0003_01C6D0E7.97BFCCB0" 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_0003_01C6D0E7.97BFCCB0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ok, Dale, understand why you want it done "right". Yes, the "Plugs Up" = orientation works well for me and provides lots of room on the side for = induction system, puts the exhaust on the bottom which makes the header = design simpler. Also means if the fuel system leaks, it won't drop = straight down on the hot exhaust. =20 Good luck. I built a test stand using my engine mount and then transfer = the same mount to the aircraft - no I did not weld it up got somebody = who knew what they were doing to do that {:>) Ed ----- Original Message -----=20 From: Dale Rogers=20 To: Rotary motors in aircraft=20 Sent: Tuesday, September 05, 2006 12:18 PM Subject: [FlyRotary] Re: Engine alignment Thanks Ed,=20 If all it was *ever* going to be was just a test stand, I'd agree=20 about the precision. The test stand is as accurate a model of the=20 COZY firewall, dimensionally, as I can make it (same template). If=20 this works out well, then I'll be duplicating the mount for the real=20 thing - except I'll send that one out to be welded by a certified=20 welder. If it doesn't, then I hope CCI gets caught up on the=20 backlog before next fall (2007). BTW, most of my ideas for implementing "plugs-up" came from=20 the photos of your installation. Dale R. 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 = 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/ =20 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ ------=_NextPart_000_0003_01C6D0E7.97BFCCB0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Ok, Dale,  understand why = you want it=20 done "right".  Yes, the "Plugs Up" orientation works well for me = and=20 provides lots of room on the side for induction system, puts the exhaust = on the=20 bottom which makes the header design simpler.  Also means if the = fuel=20 system leaks, it won't drop straight down on the hot exhaust. =20
 
Good luck.  I built a test = stand using=20 my engine mount and then transfer the same mount to the aircraft - no I = did not=20 weld it up got somebody who knew what they were doing to do=20 that {:>)
 
Ed
----- Original Message -----
From:=20 Dale = Rogers
Sent: Tuesday, September 05, = 2006 12:18=20 PM
Subject: [FlyRotary] Re: Engine = alignment

Thanks Ed,

   If all it was *ever* = going to=20 be was just a test stand, I'd agree
about the precision.  The = test=20 stand is as accurate a model of the
COZY firewall, dimensionally, = as I can=20 make it (same template).  If
this works out well, then I'll = be=20 duplicating the mount for the real
thing - except I'll send that = one out=20 to be welded by a certified
welder.  If it doesn't, then I = hope CCI=20 gets caught up on the
backlog before next fall (2007).

BTW, = most of=20 my ideas for implementing "plugs-up" came from
the photos of your=20 installation.

Dale R.

 Boy, seems like a lot = of work=20 either way.  I am not certain you need that kind of accuracy=20 (particularly for a test stand).  I think I would determine the = center=20 of the e shaft (pretty easy to do with the flywheel nut on) and = perhaps a=20 bit harder on the pulley end (depending on whether a stock or after = market=20 pulley) and then hang the engine and use a carpenter's square (or = something=20 similar) attached to your firewall (or front end) wherever you want = the e=20 shaft center line to be.  Then align the engine until the = flywheel nut=20 center line and pulley center line with your reference (T square=20 point). 
 
Ed
 
 
-----=20 Original Message ----- From:=20 Dale = Rogers=20 To:=20 Rotary motors in = aircraft=20 Sent:=20 Tuesday, September 05, 2006 10:09 AM Subject:=20 [FlyRotary] Engine alignment

Hi All,

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

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

Dale R.
COZY MkIV = #1254


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