X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 20 Nov 2012 12:11:31 -0500 Message-ID: X-Original-Return-Path: Received: from vms173015pub.verizon.net ([206.46.173.15] verified) by logan.com (CommuniGate Pro SMTP 6.0c2) with ESMTP id 5889483 for lml@lancaironline.net; Tue, 20 Nov 2012 08:59:32 -0500 Received-SPF: pass receiver=logan.com; client-ip=206.46.173.15; envelope-from=n5zq@verizon.net Received: from BillHP ([unknown] [173.72.172.118]) by vms173015.mailsrvcs.net (Sun Java(tm) System Messaging Server 7u2-7.02 32bit (built Apr 16 2009)) with ESMTPA id <0MDS00LN6HI5M240@vms173015.mailsrvcs.net> for lml@lancaironline.net; Tue, 20 Nov 2012 07:58:54 -0600 (CST) X-Original-Message-id: From: "Bill Harrelson" X-Original-To: "Lancair Mailing List" References: In-reply-to: Subject: Re: [LML] Robertson screws X-Original-Date: Tue, 20 Nov 2012 08:58:33 -0500 MIME-version: 1.0 Content-type: multipart/alternative; boundary="----=_NextPart_000_00C1_01CDC6FD.37E9D7F0" X-Priority: 3 X-MSMail-priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3538.513 X-MIMEOLE: Produced By Microsoft MimeOLE V15.4.3538.513 This is a multi-part message in MIME format. ------=_NextPart_000_00C1_01CDC6FD.37E9D7F0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Dico, I use almost no phillips screws on my planes. All of my screws are torx = which are MUCH easier to work with and don=E2=80=99t cam out like = phillips. 100 degree countersunk, stainless, torx machine screws are = available. I get =E2=80=98em at: = http://www.microfasteners.com/catalog/products/SSCFCMXS.cfm Bill Harrelson N5ZQ 320 2,150 hrs N6ZQ IV 50 hrs From: Dico Reijers=20 Sent: Tuesday, November 20, 2012 8:39 AM To: lml@lancaironline.net=20 Subject: [LML] Robertson screws Hi All, I'm wondering why we don't use Robertson screws = (http://joneakes.com/jons-fixit-database/418-History-of-the-Robertson-Scr= ew) on our airplanes... namely on the cowls and other areas that are = removed often. Having taken my cowling off and on about 15 times in = the last couple months, the Phillips screws get chewed up pretty good. = The Robby screws would be infinitely better I would think -- certainly = cosmetically they would look better after many de-cowlings. Is the main reason because the Robertson screws are Canadian and the = Phillips are US and the airplanes are US? Or is there a technical (or = other) reason we don't use them? -Dico ------=_NextPart_000_00C1_01CDC6FD.37E9D7F0 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
Dico,
 
I use almost no phillips screws on my = planes. All=20 of my screws are torx which are MUCH easier to work with and = don=E2=80=99t cam out like=20 phillips. 100 degree countersunk, stainless,  torx machine screws = are=20 available. I get =E2=80=98em at:  http= ://www.microfasteners.com/catalog/products/SSCFCMXS.cfm
 
 
Bill Harrelson
N5ZQ 320 2,150 hrs
N6ZQ  IV  50 hrs
 
 
 
Sent: Tuesday, November 20, 2012 8:39 AM
Subject: [LML] Robertson screws
 
Hi=20 All,

I'm wondering why we don't use Robertson screws (http://joneakes.com/jons-fixit-database/418-History-of-the-Rob= ertson-Screw) =20 on our airplanes... namely on the cowls and other areas that are removed = often.   Having taken my cowling off and on about 15 times in = the last=20 couple months, the Phillips screws get chewed up pretty good.  The = Robby=20 screws would be infinitely better I would think -- certainly = cosmetically they=20 would look better after many de-cowlings.

Is the main reason = because the=20 Robertson screws are Canadian and the Phillips are US and the airplanes = are=20 US?  Or is there a technical (or other) reason we don't use=20 them?

-Dico
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