Return-Path: Sender: (Marvin Kaye) To: lml Date: Sun, 10 Aug 2003 01:00:46 -0400 Message-ID: X-Original-Return-Path: Received: from [32.97.166.32] (HELO prserv.net) by logan.com (CommuniGate Pro SMTP 4.1) with ESMTP id 2516132 for lml@lancaironline.net; Sat, 09 Aug 2003 21:13:14 -0400 Received: from b8p5r1 (slip-12-65-216-231.mis.prserv.net[12.65.216.231]) by prserv.net (out2) with SMTP id <2003081001131020201h42ene>; Sun, 10 Aug 2003 01:13:10 +0000 From: "Larry Henney" X-Original-To: "'Lancair Mailing List'" Subject: RE: [LML] 320 nose gear well cracking X-Original-Date: Sat, 9 Aug 2003 20:17:48 -0500 X-Original-Message-ID: <000001c35edd$36ae93e0$e7d8410c@b8p5r1> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C35EB3.4DD88BE0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2627 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C35EB3.4DD88BE0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Paul, In my humble opinion, the problem has nothing to do with the fix. The problem is often overdriving of the down cylinder into the overcenter link. The resultant force acting on both the overcenter link and the cylinder attach end caused the damage. Decreasing the stroke solves the poblem. Additionally this may also require the close scrutiny of the slidding sleave which acts as the up stop. I've used many thin washers to help assess the proper up travel- Then machined the sleave to "perfect" length. A few thousandths of an inch is significant in the length of the up stop. A 1/2 turn on the down clevis is also a significant amount of travel. The fix, on the other hand, I'd assume folks are putting an 8 or 10 bid strap over the nose tunnel. Not sure how much glass, but do know that no amount of glass will be enough if the strut is still in compression when "apparently" fully extended and overcentered. Note- Check also for overcenter link hole wallowing. If there's been too much force, it'll show unpleasant wear. Good Luck, Larry Henney LNC2 420 hours > How have others fixed this problem? How many plies, etc.? ------=_NextPart_000_0001_01C35EB3.4DD88BE0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Paul,
 
In my=20 humble opinion, the problem has nothing to do with the fix.  The = problem is=20 often overdriving of the down cylinder into the overcenter link.  = The=20 resultant force acting on both the overcenter link and the cylinder = attach end=20 caused the damage.  Decreasing the stroke solves the poblem. =20
 
Additionally this may also require the close scrutiny of = the=20 slidding sleave which acts as the up stop.  I've used many thin = washers to=20 help assess the proper up travel- Then machined the sleave to "perfect"=20 length.  A few thousandths of an inch is significant in the length = of the=20 up stop.  A 1/2 turn on the down clevis is also a significant = amount of=20 travel.
 
The=20 fix, on the other hand, I'd assume folks are putting an 8 or 10 bid = strap over=20 the nose tunnel.  Not sure how much glass, but do know that no = amount of=20 glass will be enough if the strut is still in compression when = "apparently"=20 fully extended and overcentered.
 
Note-=20 Check also for overcenter link hole wallowing.  If there's been too = much=20 force, it'll show unpleasant wear.
 
Good=20 Luck,
 
Larry=20 Henney
LNC2=20 420 hours
 >   How have others fixed this = problem?  How=20 many plies, etc.?
 
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