Return-Path: Sender: (Marvin Kaye) To: lml Date: Tue, 21 Jan 2003 09:39:00 -0500 Message-ID: X-Original-Return-Path: Received: from imo-m02.mx.aol.com ([64.12.136.5] verified) by logan.com (CommuniGate Pro SMTP 4.0.5) with ESMTP id 1993825 for lml@lancaironline.net; Tue, 21 Jan 2003 09:07:27 -0500 Received: from Sky2high@aol.com by imo-m02.mx.aol.com (mail_out_v34.13.) id q.103.24be6071 (4328) for ; Tue, 21 Jan 2003 09:07:26 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: <103.24be6071.2b5eae1d@aol.com> X-Original-Date: Tue, 21 Jan 2003 09:07:25 EST Subject: LNC2 Nose gear pivot tab hole elongation X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_103.24be6071.2b5eae1d_boundary" X-Mailer: AOL 8.0 for Windows US sub 4104 --part1_103.24be6071.2b5eae1d_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Every annual condition inspection I toss this problem over the LML fence to see if anyone has a solution which someone can "buy" into. To wit. The nose gear over center linkage connects to the nose gear via 2 welded tabs on the gear and a castle nut secured bolt set so that the link can rotate. With the airplane up on jacks, I notice each year that I can get more fore-aft wiggle out of the nose gear leg because the holes thru the tabs are getting elongated. Those of you with extra strong or dual gas springs should also see this. I have recorded 500 landings (501 takeoffs), (some landings have had multiple touchdowns). Do others experience this problem? Check yours at the next opportunity. Note that this is a problem that will not fix itself. A possible solution is to modify or change the connecting link piece so that it terminates in a rod end just like the main gear overcenter links. The result would allow the rod end to be bolted tightly to the gear tabs thus eliminating further wear on the tab bolt holes. Perhaps the next size bolt or a bushing could be used so that the holes could be returned to a round state. Does any engineering type person have any interest in producing a new link piece or designing a modification to the current piece while maintaining the link strength. Maybe, cutting down the current link, installing a helicoil and a proper rod end with a locking nut. Scott Krueger N92EX --part1_103.24be6071.2b5eae1d_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: 7bit Every annual condition inspection I toss this problem over the LML fence to see if anyone has a solution which someone can "buy" into.  To wit.

The nose gear over center linkage connects to the nose gear via 2 welded tabs on the gear and a castle nut secured bolt set so that the link can rotate.  With the airplane up on jacks, I notice each year that I can get more fore-aft wiggle out of the nose gear leg because the holes thru the tabs are getting elongated.  Those of you with extra strong or dual gas springs should also see this.  I have recorded 500 landings (501 takeoffs), (some landings have had multiple touchdowns).

Do others experience this problem?  Check yours at the next opportunity.

Note that this is a problem that will not fix itself.

A possible solution is to modify or change the connecting link piece so that it terminates in a rod end just like the main gear overcenter links.  The result would allow the rod end to be bolted tightly to the gear tabs thus eliminating further wear on the tab bolt holes.  Perhaps the next size bolt or a bushing could be used so that the holes could be returned to a round state.  Does any engineering type person have any interest in producing a new link piece or designing a modification to the current piece while maintaining the link strength.  Maybe, cutting down the current link, installing a helicoil and a proper rod end with a locking nut.

Scott Krueger
N92EX

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