X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 08 Jul 2010 06:25:08 -0400 Message-ID: X-Original-Return-Path: Received: from vms173013pub.verizon.net ([206.46.173.13] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4384495 for lml@lancaironline.net; Wed, 07 Jul 2010 21:15:18 -0400 Received-SPF: pass receiver=logan.com; client-ip=206.46.173.13; envelope-from=lancair403@verizon.net Received: from personalab15f4 ([unknown] [72.84.67.83]) by vms173013.mailsrvcs.net (Sun Java(tm) System Messaging Server 7u2-7.02 32bit (built Apr 16 2009)) with ESMTPA id <0L57005T7SSDXB60@vms173013.mailsrvcs.net> for lml@lancaironline.net; Wed, 07 Jul 2010 20:14:38 -0500 (CDT) X-Original-Message-id: <607621432551442A9B8DF0B5C435C085@personalab15f4> From: "William Rumburg" X-Original-To: "Lancair Mailing List" References: Subject: Close Tolerance Bolts X-Original-Date: Wed, 07 Jul 2010 21:14:24 -0400 MIME-version: 1.0 Content-type: multipart/alternative; boundary="----=_NextPart_000_0085_01CB1E19.606A3560" X-Priority: 3 X-MSMail-priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.5931 This is a multi-part message in MIME format. ------=_NextPart_000_0085_01CB1E19.606A3560 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Since building my 320, I'd noticed the free-play in the main gear while = on the jackstand. Not an excessive amount, but enough to bother me. Most = of it originated at the lower gear leg attachment, but there was also = some at the overcenter link attachment to the gear leg. I decided to see = if that free-play would be appreciably reduced by the use of close = tolerance bolts - it was. They eliminated about 80% of the free-play at = each lower gear leg attachment and almost 100% at the overcenter link = attachment (there was also a slight amount in the rod end bearing = itself. I wasn't impressed with the quality of the one supplied with the = kit and replaced it with a Heim HME-6 which had virtually no free-play). = I also installed close tolerance bolts at the upper and lower shock = attachments and at the overcenter link pivot. I had almost no free play at the nose gear overcenter link attachment, = but installed a close tolerance bolt there also and it only improved the = condition. Aircraft Spruce does not stock many close tolerance bolts, I purchased = mine from Genuine Aircraft Hardware, which has all sizes and lengths. I = think they are a great thing and might install them throughout the = airframe in the future. Bill Rumburg N403WR (Sonic bOOm) ------=_NextPart_000_0085_01CB1E19.606A3560 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Since building my 320, I'd = noticed the=20 free-play in the main gear while on the jackstand. Not an = excessive=20 amount, but enough to bother me. Most of it originated at = the=20 lower gear leg attachment, but there was also some at the = overcenter link=20 attachment to the gear leg. I decided to see if that free-play = would=20 be appreciably reduced by the use of close tolerance bolts - it = was.=20 They eliminated = about 80% of the=20 free-play at each lower gear leg attachment and almost 100% at = the=20 overcenter link attachment (there was also a slight amount in the rod = end=20 bearing itself. I wasn't impressed with the quality of the one supplied = with the=20 kit and replaced it with a Heim HME-6 which had virtually no free-play). = I also installed = close tolerance=20 bolts at the upper and lower shock attachments and at = the overcenter link=20 pivot.

I had almost no free play = at the nose=20 gear overcenter link attachment, but installed a close tolerance bolt = there also=20 and it only improved the condition.

Aircraft Spruce does not = stock many=20 close tolerance bolts, I purchased mine from Genuine Aircraft = Hardware,=20 which has all sizes and lengths. I think they are a great thing and = might=20 install them throughout the airframe in the future.

Bill Rumburg

N403WR (Sonic = bOOm)

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