X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail01.syd.optusnet.com.au ([211.29.132.182] verified) by logan.com (CommuniGate Pro SMTP 5.1.11) with ESMTPS id 2279610 for flyrotary@lancaironline.net; Thu, 23 Aug 2007 02:05:35 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.182; envelope-from=lendich@optusnet.com.au Received: from george (d198-142-112-72.dsl.nsw.optusnet.com.au [198.142.112.72]) by mail01.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id l7N64Vrt009944 for ; Thu, 23 Aug 2007 16:04:44 +1000 Message-ID: <002501c7e54b$82f09020$48708ec6@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Engine mounts Date: Thu, 23 Aug 2007 16:04:35 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001F_01C7E59F.4CBBB800" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_001F_01C7E59F.4CBBB800 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable That's why I designed a bellhousing ( with Butch) with side pads for = engine mounts. George (down under) Robert, Funny you should ask. I have been working on this problem for a while. = Those devils at Mazda seem to have conspired to make the Renesis very = hard to design a mount for. They took away the point for a mount on top = of the engine. They moved the engine mount bolts all over the place and = put a lot of exhaust and plumbing in the way . It was as if they sat = down and said....how can we make this engine really really hard to = instal in an airplane. I would have to agree with Lynn on this one. I am going to use the = plate option. I will be modifying it so that it is lower profile. The = plate will be the size of the engine pan and the bolts will go in from = the side. The standard conical mounts will be on the sides as close to = the engine as I can get them. Imagine a hybrid between a bed mount and a = P51 beam mount. It is a difficult problem if you have a tight cowl. Don't rely on the engine mount to help you if you loose a prop blade!! = Put at least a 3/16 safety cable on the engine. =20 There are some design suggestions here: http://www.if1airracing.com/IF1DesignGuide2002R1.pdf (it is a huge PDF file so be forewarned) Monty -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.484 / Virus Database: 269.12.2/967 - Release Date: = 22/08/2007 6:51 PM ------=_NextPart_000_001F_01C7E59F.4CBBB800 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
That's why I designed a bellhousing ( = with Butch)=20 with side pads for engine mounts.
George (down under)
Robert,
 
Funny you should ask. I have been = working on this=20 problem for a while. Those devils at Mazda seem to have conspired = to make=20 the Renesis very hard to design a mount for. They took away the point = for a=20 mount on top of the engine. They moved the engine mount bolts all = over=20 the place and put a lot of exhaust and plumbing in the way . It was as = if they=20 sat down and said....how can we make this engine really really hard to = instal=20 in an airplane.
 
I would have to agree with Lynn on = this one. I am=20 going to use the plate option. I will be modifying it so that it = is lower=20 profile. The plate will be the size of the engine pan and the bolts = will go in=20 from the side. The standard conical mounts will be on the sides as = close to=20 the engine as I can get them. Imagine a hybrid between a bed mount and = a P51=20 beam mount.
 
It is a difficult problem if = you have a=20 tight cowl.
 
Don't rely on the engine mount to = help you if you=20 loose a prop blade!!
 
Put at least a 3/16 safety cable = on the=20 engine.  
 
There are some design suggestions=20 here:
 
http://www.= if1airracing.com/IF1DesignGuide2002R1.pdf
 
(it is a huge PDF file so be=20 forewarned)
 
Monty
 
 

No virus found in this incoming message.
Checked by AVG Free = Edition.
Version: 7.5.484 / Virus Database: 269.12.2/967 - Release = Date:=20 22/08/2007 6:51 PM
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