Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Tue, 04 Jan 2005 09:52:31 -0500 Message-ID: X-Original-Return-Path: Received: from imo-d20.mx.aol.com ([205.188.139.136] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 590966 for lml@lancaironline.net; Tue, 04 Jan 2005 09:36:11 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.139.136; envelope-from=JPKleber@aol.com Received: from JPKleber@aol.com by imo-d20.mx.aol.com (mail_out_v37_r3.8.) id q.111.40cf9891 (3890) for ; Tue, 4 Jan 2005 09:35:32 -0500 (EST) From: JPKleber@aol.com X-Original-Message-ID: <111.40cf9891.2f0c03b4@aol.com> X-Original-Date: Tue, 4 Jan 2005 09:35:32 EST Subject: Re: [LML] Re: Legacy Rudder Bellcrank X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1104849332" X-Mailer: 9.0 for Windows sub 5038 -------------------------------1104849332 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit The rudder bellcrank is one area I believe Rob Logan mentioned needs a bit of a redesign. Apparently the bellcrank arm can move slightly up and down in the assembly, gradually loosening up the tolerances so much that it eventually becomes quite sloppy. What I did --- and this mod has NOT been tested over time --- was to replace the 3/8" bronze bushing with a 3/4" delrin bushing and washer. The bushing has a 1" base. The delrin washer is also 1" in diameter with a 3/4" hole. The washer fits over the 3/4" bushing, and is just thick enough to prevent the bellcrank arm from moving up or down on the 3/4" bushing. The entire assembly is a snug fit when installed; however, a bit of synthetic grease permits tight but smooth operation. Since I am not yet flying, I'll have to report back later on the wear characteristics of this modification. But John is absolutely right --- this is a control actuation system needing regular inspection. John Kleber N83JK LEG2/G -------------------------------1104849332 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

The rudder bellcrank is one area I believe Rob Logan mentioned needs a=20= bit of a redesign. Apparently the bellcrank arm can move slightly up a= nd down in the assembly, gradually loosening up the tolerances so much that=20= it eventually becomes quite sloppy.

What I did --- and this mod has NOT been tested over time --- was=20= to replace the 3/8" bronze bushing with a 3/4" delrin bushing and washe= r. The bushing has a 1" base. The delrin washer is also 1"=20= in diameter with a 3/4" hole. The washer fits over the 3/4"=20= bushing, and is just thick enough to prevent the bellcrank arm from moving u= p or down on the 3/4" bushing. The entire assembly is a snug fit when=20= installed; however, a bit of synthetic grease permits tight but smooth opera= tion.

Since I am not yet flying, I'll have to report back later on the wear c= haracteristics of this modification.

But John is absolutely right --- this is a control actuation system nee= ding regular inspection.

John Kleber

N83JK LEG2/G

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