X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 18 Mar 2014 15:13:22 -0400 Message-ID: X-Original-Return-Path: Received: from nm32.bullet.mail.ne1.yahoo.com ([98.138.229.25] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 6785476 for lml@lancaironline.net; Tue, 18 Mar 2014 13:17:43 -0400 Received-SPF: none receiver=logan.com; client-ip=98.138.229.25; envelope-from=chris_zavatson@yahoo.com Received: from [127.0.0.1] by nm32.bullet.mail.ne1.yahoo.com with NNFMP; 18 Mar 2014 17:17:08 -0000 Received: from [98.138.101.129] by nm32.bullet.mail.ne1.yahoo.com with NNFMP; 18 Mar 2014 17:14:26 -0000 Received: from [98.139.215.143] by tm17.bullet.mail.ne1.yahoo.com with NNFMP; 18 Mar 2014 17:14:26 -0000 Received: from [98.139.212.232] by tm14.bullet.mail.bf1.yahoo.com with NNFMP; 18 Mar 2014 17:14:26 -0000 Received: from [127.0.0.1] by omp1041.mail.bf1.yahoo.com with NNFMP; 18 Mar 2014 17:14:26 -0000 X-Yahoo-Newman-Property: ymail-4 X-Yahoo-Newman-Id: 335244.75456.bm@omp1041.mail.bf1.yahoo.com Received: (qmail 45079 invoked by uid 60001); 18 Mar 2014 17:14:26 -0000 DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=GEvh11/Ie9tKpieBoJGr6Nhp/ESpxbWjwJbF6m+14QmEfu9W1xVHd1AXOOdL7pelh+RASKyxi1wmf05BErey/ON2PNH4OHhsVX/Ysuq2MlPt5l6/3ticNi0e3GEvwG0JHl7ZOirDzSFjSVbzi9OjhDDCwpf8AmD7SpEvgU2WunA=; X-YMail-OSG: wZqYHV0VM1mA34EQm37zg7iEJeHM4XgZgl0huYHauBIg1KY fCriSHRwA8P6IuckN124lCnhA6yn0kVpPmqe7CV4h2KNwTfY- Received: from [172.14.16.72] by web161206.mail.bf1.yahoo.com via HTTP; Tue, 18 Mar 2014 10:14:26 PDT X-Rocket-MIMEInfo: 002.001,R2VvcmdlLApEdXJpbmcgb25lIHJlcGxhY2VtZW50IGN5Y2xlLCBJIHB1cmNoYXNlZCB0d28gc3RydXRzLCBvbmUgdG8gdXNlIGFuZCBvbmUgYXMgYSBzcGFyZS7CoMKgwqBUaGUgbmV4dCB0aW1lwqB0aGUgc3RydXQgb24gdGhlIHBsYW5lIG5lZWRlZCB0byBiZSByZXBsYWNlZCwgSSBmb3VuZCB0aGF0IHRoZSBzdHJ1dCB0aGF0IGhhZCBiZWVuIHNpdHRpbmcgb24gdGhlIHNoZWxmwqBoYWQgbG9zdCB0aGUgdmVyeSBzYW1lIGFtb3VudCBvZiBwcmVzc3VyZS7CoMKgQnkgbm8gbWVhbnPCoGEgc2NpZW50aWZpYyABMAEBAQE- X-Mailer: YahooMailWebService/0.8.178.641 References: <1395162407.75582.YahooMailNeo@web161206.mail.bf1.yahoo.com> X-Original-Message-ID: <1395162866.17106.YahooMailNeo@web161206.mail.bf1.yahoo.com> X-Original-Date: Tue, 18 Mar 2014 10:14:26 -0700 (PDT) From: Chris Zavatson Reply-To: Chris Zavatson Subject: Re: [LML] Re: NG Gas strut X-Original-To: Lancair Mailing List In-Reply-To: <1395162407.75582.YahooMailNeo@web161206.mail.bf1.yahoo.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="1938299484-1156167144-1395162866=:17106" --1938299484-1156167144-1395162866=:17106 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable George,=0ADuring one replacement cycle, I purchased two struts, one to use = and one as a spare.=A0=A0=A0The next time=A0the strut on the plane needed t= o be replaced, I found that the strut that had been sitting on the shelf=A0= had lost the very same amount of pressure.=A0=A0By no means=A0a scientific = test, but it would appear time alone is a factor with these components.=0A= =0AChris Zavatson=0AN91CZ=0A360std=0Ahttp://www.n91cz.com/=0A=0A=0A=0AOn , = Chris Zavatson wrote:=0A =0ADom,=0AMy 360 requi= res a strut force somewhere south of 65 lbs to lock the gear in flight.=A0 = The strut when new at ~100 lbs has a huge margin.=A0 I base my replacement = interval on actual strut performance in-flight.=A0 I=A0look for=A0the maxim= um airspeed at which the gear will lock.=A0 I start at 120 KIAS and free-fa= ll the gear.=A0 New gas struts will lock the nose gear even at this much el= evated speed.=A0 If it does not lock, I start slowing=A0until I get a green= light.=A0 During this test the gear has already lost its momentum from the= free fall and it is just the=A0 gasstrut pushing the gear forward into the= airstream.=A0 Once the maximum locking speed (without the aide of a free f= all) drops below 100 KIAS I replace the strut.=A0=A0They have been lasting= =A0about seven years.=A0=A0 Note that undue friction in the bearings or lin= kages can reduce your margins=A0during the free fall.=A0 So even if the str= ut is replaced more frequently, an inflight test is the only way to know th= e actual functional performance of the system.=0AIn-flight testing of the em= ergency extension is a critical maintenance item.=A0 Throughout the years t= he Lancair fleet has suffered=A0a number of=A0nose gear collapses=A0 (follo= wing emergency extensions)=A0as a result of weak gas struts that were not b= eing properly checked.=0ANote that undue friction in the bearings or linkag= es can reduce your margins=A0during the free fall.=A0 In an=A0actual emerge= ncy extension one should=A0slow down at 80 to reduce the air loads.=0AFor m= ore nose gear maintenance items:=0Ahttp://www.lancairowners.com/nosegearmai= ntenance/=0A=0AChris Zavatson=0AN91CZ=0A360std=A0=A0=A0=0A=0A=0A=0A=0AOn Tu= esday, March 18, 2014 8:57 AM, George Rosel wrote:= =0A =0AHello Gang,=0A=0AI suggest you change out the nose gas strut every = year at your annual condition inspection. It's not worth the worry and they= only cost 19.75ea. from Lancair Kit Components. I just ordered a couple of= them.=0A=0AFly Safe!!=0A=0A... George=0A=0A=0A=0AGeorge F. Rosel=0A=0A=0A(= cell) 303-995-5501=0A=0A=0ACool vacation destination...=0A=0A"The Lodge at = Timberline", Copper Mtn., Colorado ... a true "ski-in/ski-out" Luxury Home = for RENT, see video... http://youtu.be/ZYMcJn2TfqY=0A=A0... Click here to v= iew my webpage:http://www.vrbo.com/254739=A0=A0 or...=A0 http://www.lodgeat= timberline.com/=0A=0A=0A=0A=0A=0AOn Tuesday, March 18, 2014 9:19 AM, Matt <= mattinlosangeles@yahoo.com> wrote:=0A =0AI test it in flight on my 360. A = couple times a year. When the airspeed gets too slow I replace it. =0A=0AMa= tt=0A=0ASent from my iPhone=0A=0A> On Mar 18, 2014, at 6:53 AM, John Barret= t <2thman1@gmail.com> wrote:=0A> =0A> You can remove the strut and test it.= I do that at annual and replace it if it's losing its charge=0A> =0A> John= =0A> =0A> Sent from my iPad=0A> =0A> =0A>> On Mar 18, 2014, at 4:48 AM, "Do= minic V. Crain" wrote:=0A>> =0A>> Does anyone change = the nose gear gas strut as a matter of routine maintenance, e.g., at an ann= ual, or biennially etc?=0A>> Cheers=0A>> =0A>> Dom Crain=0A>> VH-CZJ=0A>> = =0A>> Dominic V. Crain=0A>> domcrain@tpg.com.au=0A>> Phone 03-94161881=0A>>= Mobile 0412-359320=0A>> =0A>> =0A>> --=0A>> For archives and unsub http://= mail.lancaironline.net:81/lists/lml/List.html=0A> =0A> --=0A> For archives = and unsub http://mail.lancaironline.net:81/lists/lml/List.html=0A=0A--=0AFo= r archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html --1938299484-1156167144-1395162866=:17106 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
George,
During one replacement cycle, I purchased two struts, = one to use and one as a spare.   The next time the stru= t on the plane needed to be replaced, I found that the strut that had been = sitting on the shelf had lost the very same amount of pressure. &= nbsp;By no means a scientific test, but it would appear time alone is = a factor with these components.

Chris Zavatson
N91CZ
= 360std


On , Chris Zavatson <chri= s_zavatson@yahoo.com> wrote:
Dom,
My= 360 requires a strut force somewhere south of 65 lbs to lock the gear in f= light.  The strut when new at ~100 lbs has a huge margin.  I base= my replacement interval on actual strut performance in-flight.  I&nbs= p;look for the maximum airspeed at which the gear will lock.  I s= tart at 120 KIAS and free-fall the gear.  New gas struts will lock the= nose gear even at this much elevated speed.  If it does not lock, I s= tart slowing until I get a green light.  During this test the gea= r has already lost its momentum from the free fall and it is just the  gass= trut pushing the gear forward into the airstream.  Once the maximum lo= cking speed (without the aide of a free fall) drops below 100 KIAS I replac= e the strut.  They have been=0A lasting about seven years.&n= bsp;  Note that undue friction in the bearings or linkages can r= educe your margins during the free fall.  So even if the strut is= replaced more frequently, an inflight test is the only way to know the act= ual functional performance of the system.
In-flight testing of the emergency extension is a critical maintenance i= tem.  Throughout the years the Lancair fleet has suffered a numbe= r of nose gear collapses  (following emergency extensions) a= s a result of weak gas struts that were not being properly checked.<= /span>
Note that undue friction in the bearings or linkages= can reduce your margins during the free fall.  In an=  actual emergency extension one should slow down at 80 to reduce = the air loads.
For more no= se gear maintenance=0A items:

Chris Zavatson
N91CZ=
360std   



On Tuesday, March 18, 2014 8:57 AM, George Rosel <rosel_= george@yahoo.com> wrote:
Hello Gang,

I suggest you change out the nose gas strut = every year at your annual condition inspection. It's not worth the worry an= d they only cost 19.75ea. from Lancair Kit Components. I just ordered a cou= ple of them.

Fly Safe!!

... George

 


(cell)= 303-995-5501

Cool vacation=0A destination..= .
"The Lodge at Timberline", Copper Mtn., Colorado = ... a true "ski-in/ski-out" Luxury Home for RENT, see video... http://youtu.be/ZYMcJn2T= fqY
 ... Click here to view my webpage: http://www= .vrbo.com/254739   or...  http://ww= w.lodgeattimberline.com/




= =0A
On Tuesday, March 18, 2014 9:19 AM, Matt <mat= tinlosangeles@yahoo.com> wrote:
I test it in flight on my 360. A cou= ple times a year. When the airspeed gets too slow I replace it.

Matt

Sent= from my iPhone

> On Mar 18, 2014, = at 6:53 AM, John Barrett <2thman1@gmail.com> wrote:
>
> You can remove the strut and test it. I do that at annual and repla= ce it if it's losing its charge
>
&= gt; John
>
> Sent from my iPad
>
>
>> On Mar 18, 2014, at 4:48 AM, "Domini= c V. Crain" <domcra= in@tpg.com.au>=0A wrote:
>>
>> Does anyone change the nose gear gas strut as a matter of routi= ne maintenance, e.g., at an annual, or biennially etc?
&g= t;> Cheers
>>
>> Dom Cr= ain
>> 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/l= ml/List.html
>
> --
> For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html

--
For archives and unsub http://mail.lancaironline.net:81/lis= ts/lml/List.html





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