Return-Path: <13brv3@bellsouth.net> Received: from imf18aec.mail.bellsouth.net ([205.152.59.66] verified) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3186937 for flyrotary@lancaironline.net; Fri, 23 Apr 2004 15:31:33 -0400 Received: from rad ([65.0.149.119]) by imf18aec.mail.bellsouth.net (InterMail vM.5.01.06.08 201-253-122-130-108-20031117) with ESMTP id <20040423193129.CXDZ1778.imf18aec.mail.bellsouth.net@rad> for ; Fri, 23 Apr 2004 15:31:29 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: 2.85 redrive Date: Fri, 23 Apr 2004 14:31:29 -0500 Message-ID: <005401c42969$93ddd470$6001a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0055_01C4293F.AB07CC70" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0055_01C4293F.AB07CC70 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Would it be possible to change the offset by shimming the mount attach bolts on one side? Just a thought. Jim =20 Thanks for the thought. The good news is that there are a few ways to = do this. =20 =20 To shim the mount, I calculated that I'd need about a 3/4" shim to = eliminate the current 1.5 degree offset. Unfortunately, that would move the prop = hub about an inch to the right, screwing up the nose of the cowl. I also = screws up both radiator inlets, and the oil cooler inlet. Might be able to = salvage the exhaust on this option though. =20 The most creative option was to get Fred to make me a special engine = mount plate, that has the 4 mount points offset in such a way to put the prop = hub in the same place, but take out the angle. This would require moving = the rear of the engine to the left. This keeps from messing up the nose of = the cowl, and the oil cooler inlet, but still messes up the rad inlets, and really messes up the exhaust. Since this moves the engine within the = mount, I'd have to check to see if the oil pan would hit the lower tubes. =20 =20 As you can see, I have put some thought into finding an easy way to do = this. Unfortunately, the only easy way would be to live with 1.5 degrees of offset, the WRONG way. I'm pretty sure that would be a bad thing, based = on Tracy's near fence collision with 0 offset. =20 =20 Cheers, Rusty (gotta pump up the tire, and race to the Goodyear place now) =20 =20 ------=_NextPart_000_0055_01C4293F.AB07CC70 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Would it be possible to change the offset by = shimming
the=20 mount attach bolts on one side?
Just a thought.
Jim

 
Thanks = for the=20 thought.  The good news is that there are a few ways to do = this. =20
 
To shim = the mount, I=20 calculated that I'd need about a 3/4" shim to eliminate the current 1.5 = degree=20 offset.  Unfortunately, that would move the prop hub about an inch = to the=20 right, screwing up the nose of the cowl. I also screws up both radiator = inlets,=20 and the oil cooler inlet.  Might be able to salvage the exhaust on=20 this option though.
 
The most = creative option=20 was to get Fred to make me a special engine mount plate, that has the 4 = mount=20 points offset in such a way to put the prop hub in the same place, but = take out=20 the angle.  This would require moving the rear of the engine to the = left.  This keeps from messing up the nose of the cowl, and the oil = cooler=20 inlet, but still messes up the rad inlets, and really messes up the=20 exhaust.  Since this moves the engine within the mount, I'd have to = check=20 to see if the oil pan would hit the lower tubes.  =
 
As you can see, I have put some = thought into=20 finding an easy way to do this.  Unfortunately, the only easy way = would be=20 to live with 1.5 degrees of offset, the WRONG way.  I'm pretty = sure=20 that would be a bad thing, based on Tracy's near fence collision with 0=20 offset. 
 
Cheers,
Rusty (gotta pump up the tire, = and race to=20 the Goodyear place now)
 
 



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