X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 04 Sep 2013 07:42:10 -0400 Message-ID: X-Original-Return-Path: Received: from mail-pb0-f46.google.com ([209.85.160.46] verified) by logan.com (CommuniGate Pro SMTP 6.0.6) with ESMTPS id 6452794 for lml@lancaironline.net; Tue, 03 Sep 2013 17:01:31 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.160.46; envelope-from=pjdmiller@gmail.com Received: by mail-pb0-f46.google.com with SMTP id rq2so6466310pbb.5 for ; Tue, 03 Sep 2013 14:00:55 -0700 (PDT) X-Received: by 10.66.165.106 with SMTP id yx10mr10383174pab.159.1378242055755; Tue, 03 Sep 2013 14:00:55 -0700 (PDT) X-Original-Return-Path: Received: from [192.168.1.143] (S010620aa4b008706.cg.shawcable.net. [174.0.112.194]) by mx.google.com with ESMTPSA id ar5sm24447107pbc.40.1969.12.31.16.00.00 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 03 Sep 2013 14:00:54 -0700 (PDT) From: Paul Miller Content-Type: multipart/alternative; boundary="Apple-Mail=_34DBC1D7-2CB4-40B4-A12B-95897DAE6863" X-Original-Message-Id: <133F8E06-6B26-4BF7-9604-217DB6B8F1B5@gmail.com> Mime-Version: 1.0 (Mac OS X Mail 6.5 \(1508\)) Subject: Re: [LML] Re: Composite Prop and Ramp Guys X-Original-Date: Tue, 3 Sep 2013 15:00:51 -0600 References: X-Original-To: "Lancair Mailing List" In-Reply-To: X-Mailer: Apple Mail (2.1508) --Apple-Mail=_34DBC1D7-2CB4-40B4-A12B-95897DAE6863 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii =46rom the Hartzell Owner Manual: B. Maintenance Practices(2) Never = attempt to move the aircraft by pulling on the propeller.=20 If you visit the factory, you can see how the blades get manually = tweaked by muscle. It isn't hard to envision a blade getting tweaked by = someone pushing or pulling a foot or two from the hub. I usually = leave my tow bar attached so that anyone can use that to move the = Legacy.=20 The blades in motion are generally pulling tons of force on the hub = thereby providing rigidity to the blade not present when the blade is = static. You would have a very difficult time trying to bend the = spinning disk (if you had a way to do that) whereas you can easily bend = the blade at rest. Very similar to pressurized soda can having many = times more strength than one not pressurized. If you don't carry a collapsible tow bar, it will always get pushed and = pulled by the prop. Its ramp law. On 2013-09-03, at 2:38 PM, "Bill Bradburry" = wrote: > Why does pushing/pulling on the base of the prop hurt it? That prop = is > pretty robust! It pulls your plane along at a few hunnert mph and = that > doesn't seem to hurt it? >=20 > -----Original Message----- > From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = Brian > Thompson > Sent: Tuesday, September 03, 2013 12:44 PM > To: lml@lancaironline.net > Subject: [LML] Composite Prop and Ramp Guys >=20 > I'm at my wits end with ramp guys at various airports pushing or = pulling > on my prop to move the airplane around the ramp. What have you guys = been > successful with to prevent this? "NO PUSH/PULL" signs do not seem to = work, > and my latest method has been to immediately speak with the ramp > supervisor when I arrive at an airport to make sure they understand = the > needs of my airplane. >=20 > Why is this not basic training for all ramp hands? Am I out of line = with > being upset when I come out to see my prop cover/spinner all covered = in > greasy hand prints? It really knocks down my confidence level on the = next > takeoff thinking that someone has just been using my prop as a handle. >=20 > Okay, I'll stop ranting. Just looking for helpful advice >=20 > Brian > N707LH >=20 >=20 >=20 > -- > For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html >=20 >=20 > -- > For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html --Apple-Mail=_34DBC1D7-2CB4-40B4-A12B-95897DAE6863 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii
=46rom= the Hartzell Owner Manual: B. Maintenance Practices(2) Never = attempt to move the aircraft by pulling on the = propeller. 

If you visit the = factory, you can see how the blades get manually tweaked by muscle. =  It isn't hard to envision a blade getting tweaked by someone = pushing or pulling a foot or two from the hub.    I usually = leave my tow bar attached so that anyone can use that to move the = Legacy. 
The blades in motion are generally pulling tons of = force on the hub thereby providing rigidity to the blade not present = when the blade is static.   You would have a very difficult time = trying to bend the spinning disk (if you had a way to do that) whereas = you can easily bend the blade at rest.  Very similar to pressurized = soda can having many times more strength than one not = pressurized.
If you don't carry a collapsible tow bar, it will = always get pushed and pulled by the prop.  Its ramp = law.

On 2013-09-03, at 2:38 PM, = "Bill Bradburry" <bbradburry@bellsouth.net> = wrote:

Why does pushing/pulling on the base of the prop hurt it? =  That prop is
pretty robust!  It pulls your plane along at = a few hunnert mph and that
doesn't seem to hurt = it?

-----Original Message-----
From: Lancair Mailing List = [mailto:lml@lancaironline.net] = On Behalf Of Brian
Thompson
Sent: Tuesday, September 03, 2013 = 12:44 PM
To: lml@lancaironline.net
Subject= : [LML] Composite Prop and Ramp Guys

I'm at my wits end with ramp = guys at various airports pushing or pulling
on my prop to move the = airplane around the ramp. What have you guys been
successful with to = prevent this? "NO PUSH/PULL" signs do not seem to work,
and my latest = method has been to immediately speak with the ramp
supervisor when I = arrive at an airport to make sure they understand the
needs of my = airplane.

Why is this not basic training for all ramp hands? Am I = out of line with
being upset when I come out to see my prop = cover/spinner all covered in
greasy hand prints? It really knocks = down my confidence level on the next
takeoff thinking that someone = has just been using my prop as a handle.

Okay, I'll stop ranting. = Just looking for helpful = advice

Brian
N707LH



--
For archives and = unsub http://mail.= lancaironline.net:81/lists/lml/List.html


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