X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [207.46.163.235] (HELO na01-by2-obe.outbound.protection.outlook.com) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 6785252 for lml@lancaironline.net; Tue, 18 Mar 2014 11:08:48 -0400 Received-SPF: pass receiver=logan.com; client-ip=207.46.163.235; envelope-from=rpastusek@htii.com Received: from BY2PR07MB550.namprd07.prod.outlook.com (10.141.217.145) by BY2PR07MB551.namprd07.prod.outlook.com (10.141.217.150) with Microsoft SMTP Server (TLS) id 15.0.898.11; Tue, 18 Mar 2014 15:08:10 +0000 Received: from BY2PR07MB550.namprd07.prod.outlook.com ([10.141.217.145]) by BY2PR07MB550.namprd07.prod.outlook.com ([10.141.217.145]) with mapi id 15.00.0898.005; Tue, 18 Mar 2014 15:08:10 +0000 From: Robert R Pastusek To: Lancair Mailing List Subject: RE: [LML] Re: NG Gas strut Thread-Topic: [LML] Re: NG Gas strut Thread-Index: AQHPQrhGngehppQQSEmspnzk5jUnRZrm8FNg Date: Tue, 18 Mar 2014 15:08:09 +0000 Message-ID: <4d6e586a5fbc436b815e56d567aa5dac@BY2PR07MB550.namprd07.prod.outlook.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [108.28.164.93] x-forefront-prvs: 0154C61618 x-forefront-antispam-report: SFV:NSPM;SFS:(10019001)(428001)(377454003)(252514010)(189002)(199002)(97336001)(94316002)(19300405004)(80022001)(79102001)(65816001)(2656002)(90146001)(87266001)(85852003)(92566001)(93136001)(83072002)(56816005)(85306002)(69226001)(66066001)(95416001)(63696002)(87936001)(20776003)(76482001)(81342001)(77982001)(86362001)(54316002)(59766001)(56776001)(97186001)(33646001)(94946001)(93516002)(15975445006)(16236675002)(53806001)(49866001)(47446002)(74502001)(54356001)(47736001)(74316001)(4396001)(74706001)(31966008)(95666003)(50986001)(47976001)(46102001)(83322001)(81686001)(74876001)(81816001)(74662001)(81542001)(19580395003)(51856001)(15202345003)(76576001)(19580405001)(74366001)(80976001)(76796001)(76786001)(24704002)(24736002);DIR:OUT;SFP:1102;SCL:1;SRVR:BY2PR07MB551;H:BY2PR07MB550.namprd07.prod.outlook.com;FPR:275742AC.9ECE5FCB.44F93DBB.52E17B5D.20457;MLV:sfv;PTR:InfoNoRecords;MX:1;A:1;LANG:en; received-spf: None (: htii.com does not designate permitted sender hosts) Content-Type: multipart/alternative; boundary="_000_4d6e586a5fbc436b815e56d567aa5dacBY2PR07MB550namprd07pro_" MIME-Version: 1.0 X-OriginatorOrg: htii.com --_000_4d6e586a5fbc436b815e56d567aa5dacBY2PR07MB550namprd07pro_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable John, I like your test rig! MUCH safer than what I have been doing. ...and no, I= won't describe the process. Let me just say that I have risked getting imp= aled by the end of the operating rod... L I plan to switch to your method this year! I bought a replacement strut in 2009 for the first condition inspection, as= mine first flew in 2008 but had been sitting around the shop for 8 years d= uring building. The original tested OK at just under 100#, and continues to= do so. I have therefore not changed it out, but try to perform an in-fligh= t emergency extension every 3 months or so, and I disconnect and test the s= trut at each annual. Sooner or later, I will need to install the "spare," .= ..assuming it's not gone bad while laying around. Bob From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of John= Smith Sent: Tuesday, March 18, 2014 10:42 AM To: lml@lancaironline.net Subject: [LML] Re: NG Gas strut Hi Dominic, I put a new gas strut on my nose gear this January. But before I installed it, I tested its load capacity and recorded that. A= wee bit over spec. The old one - I tested that. I found its load capacity to be just over 90% = of its design spec. Supplied with the kit in May 2008; first used for fligh= t operations in Dec 2010 and removed just over 3 yrs later after somewhere = around 200 retract / extend cycles. For $20 or so, its prob a no brainer........but prob not necessary to do ev= ery annual based on my observations so far. Having said that, that was just= one strut history. So I'll remove the one I just put in, next January, and= I'll test again to see how its load capacity compares to how it was when I= installed it. But my system of maintenance now states - "test gas struts = each 2 years; replace gas struts if capacity less than 90% of specification= ". Testing is simple - 1/2 hour or so to make up a test beam with a 2:1 levera= ge; and test load with electronic fish scales anchored with a clamp so no w= obbling! I'm sure there are more sophisticated ways to do this...but this = seemed to work fine for me. See attached pic. Regards, John John N G Smith Tel / fax: +61-8-9385-8891 Mobile: +61-409-372-975 Email: john@jjts.net.au From: "Dominic V. Crain" > Reply-To: Lancair Mailing List > Date: Tuesday, 18 March 2014 7:48 PM To: > Subject: [LML] NG Gas strut Does anyone change the nose gear gas strut as a matter of routine maintenan= ce, e.g., at an annual, or biennially etc? Cheers Dom Crain VH-CZJ Dominic V. Crain domcrain@tpg.com.au Phone 03-94161881 Mobile 0412-359320 -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html --_000_4d6e586a5fbc436b815e56d567aa5dacBY2PR07MB550namprd07pro_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

John,
I like your test rig!  MUCH sa= fer than what I have been doing. …and no, I won’t describe the = process. Let me just say that I have risked getting impaled by the end of t= he operating rod… LI plan to switch to your = method this year!

 <= /p>

I bought a replacement st= rut in 2009 for the first condition inspection, as mine first flew in 2008 = but had been sitting around the shop for 8 years during building. The original tested OK at just under 100#, and continues to do s= o. I have therefore not changed it out, but try to perform an in-flight eme= rgency extension every 3 months or so, and I disconnect and test the strut = at each annual. Sooner or later, I will need to install the “spare,” …assuming it’s= not gone bad while laying around.


Bob

 <= /p>

From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of John Smith=
Sent: Tuesday, March 18, 2014 10:42 AM
To: lml@lancaironline.net
Subject: [LML] Re: NG Gas strut

 

Hi Dominic,

 

I put a new gas strut on my nose gear this January.=

 

But before I installed it, I tested its load capaci= ty and recorded that.  A wee bit over spec.

 

The old one – I tested that. I found its load= capacity to be just over 90% of its design spec. Supplied with the kit in May 2008; first used for flight operations in Dec 2010 and removed just= over 3 yrs later after somewhere around 200 retract / extend cycles.<= /o:p>

 

For $20 or so, its prob a no brainer…….= .but prob not necessary to do every annual based on my observations so far.= Having said that, that was just one strut history. So I'll remove the one I just = put in, next January, and I'll test again to see how its load capacity comp= ares to how it was when I installed it.  But my system of maintenance = now states - "test gas struts each 2 years; replace gas struts if capacity less than 90% of specification"= .

 

Testing is simple – 1/2 hour or so to make up= a test beam with a 2:1 leverage; and test load with electronic fish scales anchored with a clamp so no wobbling!  I'm sure there are more sophis= ticated ways to do this…but this seemed to work fine for me. See atta= ched pic.

 

 

 

Regards,


John


John N G Smith
Tel / fax:    +61-8-9385-8891
Mobile:      +61-409-372-975
Email:         john@jjts.net.au

 

From: "Dominic V. Crain" <domcrain@tpg.com.au>
Reply-To: Lancair Mailing List <lml@lancaironline.net>
Date: Tuesday, 18 March 2014 7:48 PM
To: <lml@lancaironline.n= et>
Subject: [LML] NG Gas strut

 

Does anyone change the nose gear gas strut as a mat= ter of routine maintenance, e.g., at an annual, or biennially etc?

Cheers

 

Dom Crain

VH-CZJ

 

Dominic V. Crain

Phone 03-94161881

Mobile 0412-359320

 

 

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