X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 30 Oct 2007 08:27:29 -0400 Message-ID: X-Original-Return-Path: Received: from bay0-omc2-s8.bay0.hotmail.com ([65.54.246.144] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2439276 for lml@lancaironline.net; Tue, 30 Oct 2007 01:34:23 -0400 Received-SPF: pass receiver=logan.com; client-ip=65.54.246.144; envelope-from=avidmario@hotmail.com Received: from BAY134-W27 ([65.55.139.62]) by bay0-omc2-s8.bay0.hotmail.com with Microsoft SMTPSVC(6.0.3790.3959); Mon, 29 Oct 2007 22:33:41 -0700 X-Original-Message-ID: X-Original-Return-Path: avidmario@hotmail.com Content-Type: multipart/alternative; boundary="_4ea7c614-03fe-418e-a947-d63fccbcf983_" X-Originating-IP: [68.123.153.51] From: Mario Gonzalez X-Original-To: Lancair Mailing List Subject: RE: [LML] Re: Gear cylinder hydraulic gaskets X-Original-Date: Mon, 29 Oct 2007 22:33:40 -0700 Importance: Normal In-Reply-To: References: MIME-Version: 1.0 X-OriginalArrivalTime: 30 Oct 2007 05:33:41.0098 (UTC) FILETIME=[6DF19CA0:01C81AB6] --_4ea7c614-03fe-418e-a947-d63fccbcf983_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Hello, =20 Just a thought, has anyone on the list researched if with the new electric = motors and batteries available today one could build an electric gear retra= ct system, maybe like the garage door oppeners kind of thing technology?.=20 =20 No more leaks here and there get rid of complexity of a mechanical/hydrauli= c system, no more pistons, gaskets, pumps etc. =20 Mario LNC2 To: lml@lancaironline.netDate: Mon, 29 Oct 2007 15:35:01 -0400From: matt.ha= pgood@alumni.duke.eduSubject: [LML] Re: Gear cylinder hydraulic gaskets Wonderful. I did the EXACT same thing in May. Rebuilt all three gear cyli= nders due to 1 slight leak. Result. Massive hydraulic leak problems that = persist to this day. I=92ve now replaced two entire cylinders and may need= to replace the third=85 =20 =20 I=92m at a loss, frustrated, and in desperate need of a shop in the southea= st that will help me TROUBLEshoot the problem (as opposed to continually re= placing cylinders). =20 Matt =20 From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of knea= ded pleasuresSent: Monday, October 29, 2007 1:59 PMTo: lml@lancaironline.ne= tSubject: [LML] Gear cylinder hydraulic gaskets =20 Matt Reeves wrote back in late August: =20 "I have a Lancair 320. I just found a leak coming out of the end of the le= ft main hydraulic cyl on the high side. It is not coming out of the fittin= gs, it's actually coming out of the end where the stop jam is. It's just = a small leak but I rebuilt this cylinder once already cause I thought there= was an internal leak so my opinion is this is a defective cylinder." =20 Matt: The problem is probably not with the cylinder - or your workmanship!= It is probably due to a wrong piston gasket being included in the cylinde= r rebuild kit. I had an identical problem with one cylinder and chose to r= ebuild all three gear cylinders at the same time. After ordering rebuild k= its (just gaskets in the kits) I installed the new gaskets and two leaked a= fter rebuild. I removed them and critically reexamined the supplied materi= als and my workmanship. (Meanwhile, I reordered from Lancair two more gaske= t kits.) I then noted that the newly-supplied leaking gaskets differed from= both the very old rotted gaskets that I had originally removed and also di= ffered from the two newest gaskets that I had just received from Kit Compon= ents. (The gasket that I am targeting here is the gasket that surrounds th= e piston as it extends/withdraws from the cylinder.)=20 =20 The differences in these gaskets are easy too see and measure. The new and= correct gaskets are the same as the very-old, original and now rotted gask= ets. They have an O-ring embedded inside of the plasticized gasket. {I "di= s-sected" (the word is not "di-sected") an old gasket to observe this.} Wr= iting on the good/proper/desired gasket is illegible to me. However, writi= ng is very clear on the IMPROPER gasket and it reads, "USA .375 MP I = K3E.1". Further, the good/non-leaking gasket stands noticeably higher on= a flat surface - perhaps four or five mils higher than the poor/leaking ga= sket (probably important at 2000 psi). =20 Summarizing, don't throw away your leaking cylinders before you first check= to ensure that the correct replacement gasket is installed. Look for the = tell-tail embedded "O ring" that is prominently visible on the top of the c= orrect gasket. Greg Nelson=20 _________________________________________________________________ Windows Live Hotmail and Microsoft Office Outlook =96 together at last. =A0= Get it now. http://office.microsoft.com/en-us/outlook/HA102225181033.aspx?pid=3DCL10062= 6971033= --_4ea7c614-03fe-418e-a947-d63fccbcf983_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Hello,
 
Just a thought, has anyone on the list researched if with the new electric = motors and batteries available today one could build an electric gear retra= ct system, maybe like the garage door oppeners kind of thing technolog= y?.
 
No more leaks here and there get rid of complexity of a mechanical/hydrauli= c system, no more pistons, gaskets, pumps etc.
 
Mario LNC2

To: lml@lancaironline.net
Date: Mon, 29 Oct 2007 15:35:01 -0400
From:= matt.hapgood@alumni.duke.edu
Subject: [LML] Re: Gear cylinder hydraulic= gaskets

Wonderful.  I did the EXACT same thi= ng in May.  Rebuilt all three gear cylinders due to 1 slight leak.&nbs= p; Result.  Massive hydraulic leak problems that persist to this day.&= nbsp; I=92ve now replaced two entire cylinders and may need to replace the = third=85 

 

I=92m at a loss, frustrated, and in despe= rate need of a shop in the southeast that will help me TROUBLEshoot the pro= blem (as opposed to continually replacing cylinders).

 

Matt

 

From: Lancair Mailing List [mailto:lml@lancaironlin= e.net] On Behalf Of kneaded pleasures
Sent: Monday, Octobe= r 29, 2007 1:59 PM
To: lml@lancaironline.net
Subject: [= LML] Gear cylinder hydraulic gaskets

 

Matt Reeves wrote back in late August:

 

"I have a Lancair 320.  I just found a leak co= ming out of the end of the left main hydraulic cyl on the high side.  = It is not coming out of the fittings, it's actually coming out of the end w= here the stop jam is.   It's just a small leak but I re= built this cylinder once already cause I thought there was an internal leak= so my opinion is this is a defective cylinder."

 

Matt:  The problem is probably not with the cy= linder - or your workmanship!  It is probably due to a wrong pist= on gasket being included in the cylinder rebuild kit.  I had an i= dentical problem with one cylinder and chose to rebuild all three gear cyli= nders at the same time.  After ordering rebuild kits (just gaskets in = the kits) I installed the new gaskets and two leaked after rebuild.&nb= sp; I removed them and critically reexamined the supplied materials and my = workmanship. (Meanwhile, I reordered from Lancair two more gasket kits= .) I then noted that the newly-supplied leaking gaskets differed = from both the very old rotted gaskets that I had originally removed and&nbs= p;also differed from the two newest gaskets that I had just received f= rom Kit Components.  (The gasket that I am targeting here is= the gasket that surrounds the piston as it extends/withdraws from the= cylinder.) 

 

The differences in these gaskets are easy too see a= nd measure.  The new and correct gaskets are the same as the very-old,= original and now rotted gaskets.  They have an O-ring embed= ded inside of the plasticized gasket. {I "dis-sected" (the word is not= "di-sected") an old gasket to observe this.}  Writing on the goo= d/proper/desired gasket is illegible to me.  However, writing is very = clear on the IMPROPER gasket and it reads, "USA   .375  &nbs= p;MP I     K3E.1".  Further, the good/non-lea= king gasket stands noticeably higher on a flat surface - perhaps four or fi= ve mils higher than the poor/leaking gasket (probably important at 2000 psi= ).

 

Summarizing, don't throw away your leaking cylinder= s before you first check to ensure that the correct replacement gasket is i= nstalled.  Look for the tell-tail embedded "O ring" that is prominentl= y visible on the top of the correct gasket.     Greg Ne= lson 


Windows Live Hotmail and= Microsoft Office Outlook =96 together at last. Get it now! = --_4ea7c614-03fe-418e-a947-d63fccbcf983_--