X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 04 May 2012 16:22:58 -0400 Message-ID: X-Original-Return-Path: Received: from p3plex2out01.prod.phx3.secureserver.net ([184.168.131.12] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5522980 for lml@lancaironline.net; Fri, 04 May 2012 12:44:09 -0400 Received-SPF: none receiver=logan.com; client-ip=184.168.131.12; envelope-from=pete@leapfrogventures.com Received: from P3PW5EX1HT003.EX1.SECURESERVER.NET ([72.167.180.21]) by p3plex2out01.prod.phx3.secureserver.net with bizsmtp id 5sjZ1j0080U5vnL01sjZi7; Fri, 04 May 2012 09:43:33 -0700 Received: from P3PW5EX1MB14.EX1.SECURESERVER.NET ([10.6.135.86]) by P3PW5EX1HT003.EX1.SECURESERVER.NET ([72.167.180.21]) with mapi; Fri, 4 May 2012 09:43:33 -0700 From: "pete@leapfrogventures.com" X-Original-To: "lml@lancaironline.net" X-Original-Date: Fri, 4 May 2012 09:43:27 -0700 Subject: RE: MT composite prop Thread-Topic: MT composite prop Thread-Index: Ac0p3N/ShdwpiIPoQDivVRc6glGqiAAN10aA X-Original-Message-ID: <2A14E6258A8534418F5498D73CCA51EFB06892BF@P3PW5EX1MB14.EX1.SECURESERVER.NET> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_2A14E6258A8534418F5498D73CCA51EFB06892BFP3PW5EX1MB14EX1_" MIME-Version: 1.0 --_000_2A14E6258A8534418F5498D73CCA51EFB06892BFP3PW5EX1MB14EX1_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I think what they are referring to is that MT builds northern hemisphere pr= ops. Up north, the rain drops rotate clockwise as they fall due to the cor= iolis effect. This interacts with the counter clockwise motion of the prop= (when viewed from the front) that effectively causes the raindrops to get = pushed away from the grease seals on the hub. In the southern hemisphere, = the raindrops rotate counterclockwise, which, unless the propeller was spin= ning in the opposite direction, get forced into the oil seals rather than a= way from them. The only answer if you want to fly IFR in the rain down und= er is to get an engine and prop that spin in the opposite direction so that= they interact properly with your southern rain drops. Pete From: Stevens Family [mailto:stevens5@swiftdsl.com.au] Sent: Thursday, May 03, 2012 6:41 AM To: lml@lancaironline.net Subject: MT composite prop Another query for those out there who are already flying. I purchased a partly built L360 kit some time ago, which came with a 3 blad= ed, constant speed, MT, composite prop. It has never been assembled, and is= by now about 20 years old. Now that I am getting closer to completing the = project I have been speaking to a couple of propeller shops. As I intend to= operate IFR, I asked about durability of the prop when operated in rain. T= he response has been a little confusing, with statements ranging from "they= are not designed for ops in rain" to " they are approved for ops in rain, = but nobody actually does so" to "they are fully designed to operate in rain= and will be fine". I would appreciate any comments from those of you out there who have operat= ed MT composite props, as to their suitability in rain. Thanks again for your input. Rob Stevens Perth, Western Australia --_000_2A14E6258A8534418F5498D73CCA51EFB06892BFP3PW5EX1MB14EX1_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I think what they are referring to is that MT builds northern= hemisphere props.  Up north, the rain drops rotate clockwise as they = fall due to the coriolis effect.  This interacts with the counter cloc= kwise motion of the prop (when viewed from the front) that effectively caus= es the raindrops to get pushed away from the grease seals on the hub. = In the southern hemisphere, the raindrops rotate counterclockwise, which, = unless the propeller was spinning in the opposite direction, get forced int= o the oil seals rather than away from them.  The only answer if you wa= nt to fly IFR in the rain down under is to get an engine and prop that spin= in the opposite direction so that they interact properly with your souther= n rain drops.

 

Pete<= /span>

 

From: Stevens Family [mailto:stevens5@swiftdsl.co= m.au]
Sent: Thursday, May 03, 2012 6:41 AM
To: lml@lan= caironline.net
Subject: MT composite prop

 

Another query for those out there who are already flying.<= o:p>

 

I purchased a partly = built L360 kit some time ago, which came with a 3 bladed, constant speed, M= T, composite prop. It has never been assembled, and is by now about 20 year= s old. Now that I am getting closer to completing the project I have been s= peaking to a couple of propeller shops. As I intend to operate IFR, I asked= about durability of the prop when operated in rain. The response has been = a little confusing, with statements ranging from “they are not design= ed for ops in rain” to “ they are approved for ops in rain, but= nobody actually does so” to “they are fully designed to operat= e in rain and will be fine”.

 

I would appreciate any comments from those of you out there w= ho have operated MT composite props, as to their suitability in rain.<= /o:p>

 

Thanks again for your inpu= t.

 =

Rob Stevens

Perth,

Western Australia

 

 

= --_000_2A14E6258A8534418F5498D73CCA51EFB06892BFP3PW5EX1MB14EX1_--