X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [65.54.250.91] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 985839 for flyrotary@lancaironline.net; Wed, 15 Feb 2006 08:56:37 -0500 Received-SPF: pass receiver=logan.com; client-ip=65.54.250.91; envelope-from=lors01@msn.com Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 15 Feb 2006 05:55:51 -0800 Message-ID: Received: from 4.171.114.9 by BAY115-DAV19.phx.gbl with DAV; Wed, 15 Feb 2006 13:55:51 +0000 X-Originating-IP: [4.171.114.9] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Engine mount plate thickness Date: Wed, 15 Feb 2006 08:55:49 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_009E_01C6320D.9E5F7EE0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN 9 X-MimeOLE: Produced By MSN MimeOLE V9.10.0011.1703 Seal-Send-Time: Wed, 15 Feb 2006 08:55:49 -0500 X-OriginalArrivalTime: 15 Feb 2006 13:55:51.0792 (UTC) FILETIME=[884C2700:01C63237] This is a multi-part message in MIME format. ------=_NextPart_000_009E_01C6320D.9E5F7EE0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable There are never any absolutes. =20 The answer depends on configuration of the mount. In my -4 mount, the = bending load on the plate is distributed across the entire length of the = engine and the moment arm is almost zero on one side and less than one = inch on the other. This is so under-stressed that I actually went down = to 3/16 6061 T6 when changing engines to Renesis. If your mount is = similar to the CC mount (rubber isolators on the plate itself) and = forces are concentrated at the 4 corners and moment arm is longer, then = the plate needs to be thicker. My CC mount on the -8 uses 1/2" 6061 T6 = and is probably more than strong enough. EVERY part needs to be looked at IN CONTEXT, not generalized. Tracy (No absolutes, even when it comes to airfilters : ) ----- Original Message -----=20 From: Scott=20 Hello All... Well I've given up on another attempt at an engine mount( fabricating an alternate alternator mount pad which lined up extactly and allowed the right belt tension did this one in ) and am throwing in the towel to go with the sandwhich plate approach. =20 I was hoping someone might have already had the holes plotted in a tool which I could just print out and tape to my plate and start drilling. Additionally, in Tracy's rotary conversion guide he suggests a 1/4" 2024 plate, is this still the prevailing wisdom? Thx... -Scott __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around=20 http://mail.yahoo.com=20 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net/lists/flyrotary/ ------=_NextPart_000_009E_01C6320D.9E5F7EE0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
There are never any absolutes. 
 
The answer depends on configuration of the mount.  In my -4 = mount, the=20 bending load on the plate is distributed across the entire length of the = engine=20 and the moment arm is almost zero on one side and less than one inch on = the=20 other.  This is so under-stressed that I actually went down to 3/16 = 6061 T6=20 when changing engines to Renesis.  If your mount is similar to the = CC mount=20 (rubber isolators on the plate itself) and forces are concentrated at = the 4=20 corners and moment arm is longer,  then the plate needs to be=20 thicker.  My CC mount on the -8 uses 1/2" 6061 T6 and is probably = more than=20 strong enough.
 
EVERY part needs to be looked at IN CONTEXT, not generalized.
 
Tracy  (No absolutes, even when it comes to airfilters : = )
 
----- Original Message -----
From: Scott

Hello All...

Well I've given up on another = attempt at an=20 engine
mount( fabricating an alternate alternator mount = pad
which lined=20 up extactly and allowed the right belt
tension did this one in ) = and am=20 throwing in the towel
to go with the sandwhich plate = approach. =20

I was hoping someone might have already had the = holes
plotted in a=20 tool which I could just print out and
tape to my plate and start=20 drilling.

Additionally, in Tracy's rotary conversion guide=20 he
suggests a 1/4" 2024 plate, is this still the
prevailing=20 = wisdom?

Thx...
-Scott



__________________________= ________________________
Do=20 You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam = protection=20 around
http://mail.yahoo.com=20

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Homepage:  http://www.flyrotary.com/
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