X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 07 May 2012 07:51:20 -0400 Message-ID: X-Original-Return-Path: Received: from fmailhost02.isp.att.net ([204.127.217.102] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5523295 for lml@lancaironline.net; Fri, 04 May 2012 16:32:56 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.217.102; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-145-153.mco.bellsouth.net[98.85.145.153]) by isp.att.net (frfwmhc02) with SMTP id <20120504203220H0200aguu3e>; Fri, 4 May 2012 20:32:20 +0000 X-Originating-IP: [98.85.145.153] From: "Bill Bradburry" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Re: MT composite prop X-Original-Date: Fri, 4 May 2012 16:32:21 -0400 X-Original-Message-ID: <403FD24D605245799A65F3C7E8B8E0F7@Desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01CD2A13.7B941560" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Ac0qM7h1ivJaX5JJR9eqRqXPCu2U0gAAN+KQ X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_0009_01CD2A13.7B941560 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Don't all props in the land down under rotate counterclockwise?? I was under the impression that when you crossed the equator, the props reversed and you had to fly the plane backwards to conform with the way they do everything else down there??? :>) B2 _____ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of pete@leapfrogventures.com Sent: Friday, May 04, 2012 4:23 PM To: lml@lancaironline.net Subject: [LML] Re: MT composite prop 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 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 spinning in the opposite direction, get forced into the oil seals rather than away from them. The only answer if you want 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 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 bladed, 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. The 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 operated MT composite props, as to their suitability in rain. Thanks again for your input. Rob Stevens Perth, Western Australia ------=_NextPart_000_0009_01CD2A13.7B941560 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Don’t all props in the land = down under rotate counterclockwise??  I was under the impression that = when you crossed the equator, the props reversed and you had to fly the plane = backwards to conform with the way they do everything else down there???  = :>)

 

B2

 

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of = pete@leapfrogventures.com
Sent: Friday, May 04, = 2012 4:23 PM
To: = lml@lancaironline.net
Subject: [LML] Re: MT = composite prop

 

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 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 spinning in the = opposite direction, get forced into the oil seals rather than away from = them.  The only answer if you want 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 southern rain drops.

 <= /p>

Pete

 <= /p>

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 bladed, 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. = The 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 operated MT composite props, as to their suitability in = rain.

 

Thanks again for your input.

 

Rob Stevens

Perth,

Western = Australia

 

 

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