X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mtiwmhc13.worldnet.att.net ([204.127.131.117] verified) by logan.com (CommuniGate Pro SMTP 5.1.11) with ESMTP id 2280522 for flyrotary@lancaironline.net; Thu, 23 Aug 2007 12:05:38 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.131.117; envelope-from=keltro@att.net Received: from mwebmail14.att.net ([204.127.135.40]) by worldnet.att.net (mtiwmhc13) with SMTP id <20070823160456113008ad3qe>; Thu, 23 Aug 2007 16:05:01 +0000 Received: from [64.250.199.171] by mwebmail14.att.net; Thu, 23 Aug 2007 16:04:56 +0000 From: keltro@att.net (Kelly Troyer) To: "Rotary motors in aircraft" Subject: Re: engine mounts Date: Thu, 23 Aug 2007 16:04:56 +0000 Message-Id: <082320071604.9775.46CDB0270004B3FB0000262F2160280748019D9B040A05@att.net> X-Mailer: AT&T Message Center Version 1 (Mar 24 2007) X-Authenticated-Sender: a2VsdHJvQGF0dC5uZXQ= MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_9775_1187885096_0" --NextPart_Webmail_9m3u9jl4l_9775_1187885096_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Rob, Probably no definitive answer without a real world test !! Who wants to be first to volunteer to throw a prop blade........The answer to make you sleep better at night has already been suggested........Do as the air racers do and secure a steel cable around the engine and connect to fittings at the upper engine mount attach bolts........The idea being that the cable is not rigidly attached to the engine or airframe and hopefully will survive the violence of losing a prop blade and at least keep the engine from falling off and the resulting total loss of control from cg shift to rear of the a/c (or front of a pusher).........IMHO -- Kelly Troyer "Dyke Delta"_13B ROTARY Engine "RWS"_RD1C/EC2/EM2 "Mistral"_Backplate/Oil Manifold -------------- Original message from "Rob" : -------------- If I may clarify my question a bit. My question was not how to prevent the engine from departing but rather which mount would survive longer because of how it is designed. Robert --NextPart_Webmail_9m3u9jl4l_9775_1187885096_0 Content-Type: text/html Content-Transfer-Encoding: 8bit
Rob,
   Probably no definitive answer without a real world test !! Who wants to be first to volunteer
to throw a prop blade........The answer to make you sleep better at night has already been
suggested........Do as the air racers do and secure a steel cable around the engine and connect
to fittings at the upper engine mount attach bolts........The idea being that the cable is not rigidly
attached to the engine or airframe and hopefully will survive the violence of losing a prop blade
and at least keep the engine from falling off and the resulting total loss of control from cg shift
to rear of the a/c (or front of a pusher).........IMHO
--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold
-------------- Original message from "Rob" <rob@mum.edu>: --------------

If I may clarify my question a bit. My question was not how to prevent the engine from departing but rather which mount would survive longer because of how it is designed.
Robert
 
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