X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 27 Jun 2013 08:06:46 -0400 Message-ID: X-Original-Return-Path: Received: from nm15-vm6.bullet.mail.gq1.yahoo.com ([98.137.176.78] verified) by logan.com (CommuniGate Pro SMTP 6.0.5) with ESMTPS id 6350874 for lml@lancaironline.net; Thu, 27 Jun 2013 01:38:22 -0400 Received-SPF: none receiver=logan.com; client-ip=98.137.176.78; envelope-from=mcmess1919@yahoo.com Received: from [216.39.60.184] by nm15.bullet.mail.gq1.yahoo.com with NNFMP; 27 Jun 2013 05:37:47 -0000 Received: from [208.71.42.190] by tm20.bullet.mail.gq1.yahoo.com with NNFMP; 27 Jun 2013 05:37:47 -0000 Received: from [127.0.0.1] by smtp201.mail.gq1.yahoo.com with NNFMP; 27 Jun 2013 05:37:47 -0000 X-Yahoo-Newman-Id: 383992.54279.bm@smtp201.mail.gq1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: E0N6G4cVM1nLx_OCKM4vg92gajFF7tvXAQPd6.GYE5.jQpy lIA6Ua5lWFewktpWbxk04gh6pE2WOvFQMK99lOrMijQWx6ZN15UmlYMqKXtM yaq_wMCQgnwEkgzvWVUCUva7h20SryfFtTil7tM35h0zY3tnszN5E7n7FQls 183S_e_gYJDGqtPdFph.XsU5Xz6nc7BAQ2j58EVADribTpCT88hB3bwBTqwa BFTfz6wlEJZJ52dq2RlZA2U8fSZEw5YEXfgICC3DdRJ_QNGDXbit_d.uBpZY 7grKuMDQV0tdsIiRKY7lKQ_yoJXD_nI5viJtUXm0R65Z8.mcQIJVeSbNovOg CQ.qGIqOV4Okvubwt6hGlE8UMVVsydWZeMHKditWsuSY9nYkzCM0FPvLVTd. GDizcaFGVPnM_DHnLgdkicjFFA9hOeEk8ngR4iIxC6nmxVVNO9GS.5LknrlL bw2u4eJ6V9x.mgwGihVY_SF9e28PasaIpIyeB3JcgdMTJM0hID0Kd3HGp.Vh K9g-- X-Yahoo-SMTP: rK4i7HqswBC7mDE8.sOiWQeO4CeReXc- X-Rocket-Received: from StevePC (mcmess1919@67.187.169.184 with ) by smtp201.mail.gq1.yahoo.com with SMTP; 26 Jun 2013 22:37:47 -0700 PDT From: "Steve Colwell" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: gas strut-nose gear X-Original-Date: Wed, 26 Jun 2013 22:37:47 -0700 X-Original-Message-ID: <01e201ce72f8$74ec1d50$5ec457f0$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_01E3_01CE72BD.C88D4550" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ac5y6R/9UXI4YI+DQCuMoaUoB+O2GgACCcbQ Content-Language: en-us This is a multi-part message in MIME format. ------=_NextPart_000_01E3_01CE72BD.C88D4550 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit This procedure has been around for quite a while but I thought it worth repeating. A good way to monitor the loss of strength of gear gas struts over time is: Reduce airspeed to slightly below gear down speed, pull the breaker for the gear pump, put the gear switch down and open the dump valve. Slowly reduce airspeed and record when each gear locks down. (Then you know emergency gear extension works.) This will provide a written record of lowering airspeeds for extension as the gas struts lose strength. And. don't forget to close the dump valve, put the gear switch down, close the gear pump breaker and confirm 3 green before landing. Side note: If you select gear down someday and it doesn't and cycling the gear switch and breakers does not help either. Reduce airspeed to the lowest speed you are comfortable with (not too low, when the gear comes down drag will slow you down) before you open the dump valve. The momentum of the gear and lower air pressure will make it easier for the gas strut to push the nose gear down. Steve Colwell Legacy ED: Good to know. Appreciate the info. I recommend change each annual. Regards, bill Hogarty On Sun, Jun 23, 2013 at 4:41 AM, Ed Gray wrote: Paul and Bill, McM-Carr does have the threaded rod ends to adapt the gas strut, takes some looking. The 6mm female thread eyelet ends are part No. 6465K61. They have a .39 eyelet bore (3/8"), and they each add .83" to the length of the strut. But the strut (part No. 9416K15 or 9416K336) has 10.71" extended length not counting the male 6mm thread on each end. So if the strut is entirely threaded into the eyelet on each end, the total center-to-center length is 12.37, just enough, depending on where the upper mount is located. The eyelet is priced at $2.61ea. so the total change is $18.26 (strut is $13.04). Of course the ends can be reused, and by unscrewing the strut from the upper eyelet at change time, you avoid the knuckle busting chore of removing the upper bolt, and change out as often as you wish for $ 13.04. Might be advisable to use a thin lock nut on the bottom end to prevent strut turning. ------=_NextPart_000_01E3_01CE72BD.C88D4550 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

This = procedure has been around for quite a while but I thought it worth = repeating.

 <= /o:p>

 <= /o:p>

A good way = to monitor the loss of strength of gear gas struts over time = is:

=

Reduce = airspeed to slightly below gear down speed, pull the breaker for the = gear pump, put the gear switch down and open the dump valve.  =  

Slowly = reduce airspeed and record when each gear locks down.  (Then you = know emergency gear extension works.)

This will = provide a written record of lowering airspeeds for extension as the gas = struts lose strength.  

And… = don’t forget to close the dump valve, put the gear switch down, = close the gear pump breaker and confirm 3 green before = landing.

 <= /o:p>

Side = note:  If you select gear down someday and it doesn’t and = cycling the gear switch and breakers does not help either.  Reduce = airspeed to the lowest speed you are comfortable with (not too low, when = the gear comes down drag will slow you down) before you open the dump = valve.  The momentum of the gear and lower air pressure will make = it easier for the gas strut to push the nose gear down.  =  

 <= /o:p>

Steve = Colwell  Legacy

 

 

ED:

 

Good to know.  Appreciate the info.  I = recommend change each annual.

 

Regards, bill Hogarty

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

On Sun, Jun 23, 2013 at 4:41 AM, Ed Gray <egraylaw@swbell.net> = wrote:

Paul and Bill, McM-Carr does have the = threaded rod ends to adapt the gas strut, takes some looking.  The = 6mm female thread eyelet ends are part No. 6465K61. They have a .39 = eyelet bore (3/8”), and they each add .83” to the length of = the strut.  But the strut (part No. 9416K15 or 9416K336) has = 10.71” extended length not counting the male 6mm thread on each = end.  So if the strut is entirely threaded into the eyelet on each = end, the total center-to-center length is 12.37, just enough, depending = on where the upper mount is located.  The eyelet is priced at = $2.61ea. so the total change is $18.26 (strut is $13.04).  Of = course the ends can be reused, and by unscrewing the strut from the = upper eyelet at change time, you avoid the knuckle busting chore of = removing the upper bolt, and change out as often as you wish for $ = 13.04.  Might be advisable to use a thin lock nut on the bottom end = to prevent strut turning. =  

 

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