X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 29 Jan 2013 15:11:51 -0500 Message-ID: X-Original-Return-Path: Received: from nm20-vm1.bullet.mail.ne1.yahoo.com ([98.138.91.21] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTPS id 6035300 for lml@lancaironline.net; Tue, 29 Jan 2013 12:17:07 -0500 Received-SPF: none receiver=logan.com; client-ip=98.138.91.21; envelope-from=chris_zavatson@yahoo.com Received: from [98.138.90.56] by nm20.bullet.mail.ne1.yahoo.com with NNFMP; 29 Jan 2013 17:16:31 -0000 Received: from [98.138.226.165] by tm9.bullet.mail.ne1.yahoo.com with NNFMP; 29 Jan 2013 17:16:31 -0000 Received: from [127.0.0.1] by omp1066.mail.ne1.yahoo.com with NNFMP; 29 Jan 2013 17:16:31 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 445711.89546.bm@omp1066.mail.ne1.yahoo.com Received: (qmail 83831 invoked by uid 60001); 29 Jan 2013 17:16:31 -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=Ojl1YyLaP8jgWxqFb+ewLx6LaeEVC8ryl3tOISRAn71peZ6Rawxek55FefAo5jC1WsCkHe6kRhCca5s2/vj1KMOpXhacBkGzzrzCb2GbJRXFfjDWGxTAh8pF2B1RMwmZdEP2VvOj8ZLNZwVo2GQXgd5gpYF4WHnG5H8YYJvTa4I= ; X-YMail-OSG: Ci3EsnIVM1n4FJ9n75IAdqxtFpBHOq.LqS91MM_.hZXjDyW zwDWjAsCE6SgzlpSNMTHFHioSG922GV9gTEIj97IxS0rv4O.JG5kWCzg18pj wjMzlzlNryzOP1ynNEImLzihA5bwh_i7BOVYGQTwfC3fv8FgTPQsIF7tmkl8 gYl9hYRebDbjK_Qlbds6YSTMlwDO7N1UuiSJ_URrYt0_7mw1VrSkXkVS.pkC m.XiTFBXrDeZjaYH7FmEmX.ectuoYKOZaai46nQGrMkwca26hGLih5IuUpkm O1AhUiqMMIQgxdPumAsOZQvElQ5lQXBBPU1PiGF7t0f7XhYtvU4wDNsQ044e xi74befzVfDWi1WLrhVJUZvc1U.vGXeB6UYEBwvKGdg8aP.cS0b40N2XgFeG m_5taXg.6odnaYc8XEx.dhttBx6DYE0IVTcyP07yauxnGDEU9wxkiiVKdr9m twGdVhoPOJ4LiLzYWFrvzo1IOZPJLYuojVzOUbi_VJ5dEMifnW1Qnc4G1DRg Z9vkJBYLMP.5Yn81xSsiW_LPaKGIxI_CvIiXMvRJMvqHfaRO8e1ZIexsZXeC tsR_x9qq709paCSciJU81j5jxyMk- Received: from [166.137.191.33] by web121603.mail.ne1.yahoo.com via HTTP; Tue, 29 Jan 2013 09:16:31 PST X-Rocket-MIMEInfo: 001.001,QWZ0ZXIgbXVsdGlwbGUgY29udmVyc2F0aW9ucyB3aXRoIHRoZSBwcm9kdWN0ICBtYW5hZ2VyIG9mIHRoZSBPaWxkeW5lIHB1bXAgYW5kIExhbmNhaXIsIGl0IGhhcyBiZWVuIGNvbmNsdWRlZCB0aGF0IHRoZSB0aGVybWFsIGxvY2stdXAgd2FzIG92ZXJsb29rZWQgZHVyaW5nIHRoZSBtb3N0IHJlY2VudCBkZXNpZ24gY2hhbmdlICh.MjAwNSkuwqDCoFBhcmtlci9PaWxkeW5lIGhhcyBzaW5jZSBiZWVuIHN1cHBseWluZyBwYXJ0cyBmcmVlIG9mIGNoYXJnZSB0byBmaXggdGhlIG92ZXJzaWdodC7CoCBJIGhhdmUBMAEBAQE- X-Mailer: YahooMailWebService/0.8.131.499 References: X-Original-Message-ID: <1359479791.75997.YahooMailNeo@web121603.mail.ne1.yahoo.com> X-Original-Date: Tue, 29 Jan 2013 09:16:31 -0800 (PST) From: Chris Zavatson Reply-To: Chris Zavatson Subject: Re: [LML] Re: Thermal influence on Hydraulic Pressure X-Original-To: Lancair Mailing List In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-1682663710-487268199-1359479791=:75997" ---1682663710-487268199-1359479791=:75997 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable After multiple conversations with the product manager of the Oildyne pump = and Lancair, it has been concluded that the thermal lock-up was overlooked = during the most recent design change (~2005).=A0=A0Parker/Oildyne has since= been supplying parts free of charge to fix the oversight.=A0 I have severa= l sets in case anyone needs some.=0A=A0=0AChris Zavatson=0AN91CZ=0A360std 1= ,400 hrs=0Ahttp://www.n91cz.net/=0A =0A=0A________________________________= =0A From: Wolfgang =0ATo: lml@lancaironline.net =0ASent= : Tuesday, January 29, 2013 8:11 AM=0ASubject: [LML] Re: Thermal influence = on Hydraulic Pressure=0A =0A=0A =0AAfter multiple conversations with the = product =0Amanager of the Oildyne pump, it has been concluded (no, I have n= ot tested with =0Aevery version of the pump ever made) that simply running = the pump in the =0Aappropriate direction will accomplish the desired action= , sending the spool to =0Athe=A0required position,=A0regardless of the vers= ion.=A0The module has =0Abeen tested with the standard published Lancair 30= 0 series hydraulic =0Asystem.=A0Thermal lock was simulated by closing the p= ressure switches as =0Aneeded.=A0I include a=A0similar test procedure with = the module. There are =0Amultiple units in the field. =0A=A0 =0AWolfgang = =0A=0A----- Original Message ----- =0AFrom: Steve Colwell =0A>To: lml@la= ncaironline.net =0A>Sent: Monday, January 28, 2013 2:48 PM =0A>Subject: T= hermal influence on Hydraulic Pressure =0A>=0A> =0A>Wolfgang, =0A>=A0 =0A>= Two questions.=A0 Have you tested your Module under Thermal Lock with all = the configurations of hydraulic systems and pump variations supplied for L= ancairs over the years?=A0 Which Lancair are you flying or building? =0A>= =A0 =0A>Steve Colwell=A0 Legacy=A0 =0A>=A0 =0A>From:Lancair Mailing List= [mailto:lml@lancaironline.net] On Behalf Of Wolfgang=0A>Sent: Monday, Janu= ary 28, 2013 11:01 AM=0A>To: lml@lancaironline.net=0A>Subject: [LML] Re: Th= ermal influence on Hydraulic Pressure =0A>=A0 =0A>Understood . . . but a = module like mine doesn't care what version your pump is, it just works. = =0A>=A0 =0A>Wolfgang =0A>=A0 =0A>----- Original Message ----- =0A>>From:C= hris Zavatson =0A>>To:lml@lancaironline.net =0A>>Sent:Sunday, January 2= 7, 2013 6:59 AM =0A>>Subject:Re: [LML] Re: Thermal influence on Hydraulic = Pressure =0A>>=A0 =0A>>Charley, =0A>>Lancair started adding return springs= inside the spool valve for Legacy pumps in about 2005.=A0 One of the cons= equences of doing this is what you have observed in the hangar.=A0 You sor= t of have a 'get out of jail free' card in that your hydraulic system has = a three-way valve.=A0 It doesn't prevent the lock-up.=A0 It just gives you= a way out.=A0 Folks installing the 'Legacy' pump in 300 series plane with= a two-way valve can get stuck.=A0 Fortunately the springs are easily remo= ved and Parker has been providing the parts free-of-charge to reset pumps = back to the pre-2005 configuration. =0A>>Chris =0A>>=A0 =0A>>Chris Zavatso= n =0A>>N91CZ =0A>>360std. 1,400 hrs =0A>>http://www.n91cz.net/ =0A>>=A0 = =0A>>From:Charles Brown =0A>>To: lml@lancaironline.ne= t =0A>>Sent: Friday, January 25, 2013 11:07 PM=0A>>Subject: [LML] Re: Ther= mal influence on Hydraulic Pressure =0A>>=A0 =0A>>This has happened to me = even at the beginning of a flight, if the temps in the hangar have gone fr= om cold on a previous day, to warm on flight day. =A0I guess cold temps sh= rink the fluid and suck more from the reservoir into the lines, and when i= t warms, the pressure builds on both sides of the system, so that the "up"= and "down" pressure switches are both open and the gear won't move until = I pop the bleed valve. =0A>>=A0 =0A>>Nasty when the gear won't retract just= after blasting off into a low overcast. =0A>>=A0 =0A>>Charley Brown =0A>>= Legacy #299 =A0200 hr =0A>>=A0 =0A>>On Jan 25, 2013, at 7:23 AM, randy sna= rr wrote: =0A>>=A0 =0A>>. I dont like having to open the dump valve but it = is necessary once in a while especially when it is cold. The pressures on = both sides of the system climb due to the engine heat and the gear sometim= es will not move without dumping the pressure. =0A>>=A0 =0A>>=A0 =0A>>=A0= ---1682663710-487268199-1359479791=:75997 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Afte= r multiple conversations with the product manager of the Oildyne pump and = Lancair, it has been concluded that the thermal lock-up was overlooked duri= ng the most recent design change (~2005).  Parker/Oildyne has sin= ce been supplying parts free of charge to fix the oversight.  I have s= everal sets in case anyone needs some.
 
Chris Zava= tson
N91CZ
360std 1,400 hrs

From: Wolfgang <Wolfgang@MiCom.net>= ;
To: lml@lancaironlin= e.net
Sent: Tuesday, = January 29, 2013 8:11 AM
Subject:= [LML] Re: Thermal influence on Hydraulic Pressure
 <= /div>
=0A
=0A=0A =0A =0A=0A=0A
=0A<= div>After multiple conversations with the p= roduct =0Amanager of the Oildyne pump, it has been concluded (no, I have no= t tested with =0Aevery version of the pump ever made) that simply running t= he pump in the =0Aappropriate direction will accomplish the desired action,= sending the spool to =0Athe required position, regardless of the= version. The module has =0Abeen tested with the standard published La= ncair 300 series hydraulic =0Asystem. Thermal lock was simulated by cl= osing the pressure switches as =0Aneeded. I include a similar tes= t procedure with the module. There are =0Amultiple units in the field.
=0A
 
=0A
= Wolfgang
=0A
 
= =0A
----- Original Message -----
=0A
=0A =0A =0A
Sent: Monday, January 28, 2013 2:48 =0A= PM
=0A
Subject: Thermal influence on Hydraulic = =0A Pressure
=0A

=0A
=0A
W= olfgang,
=0A
 
=0A
=  
=0A
Steve =0A Colwell = Legacy 
=0A
 
=0A
=0A
=0A
From: Lancair Mailing =0A List [mailto= :lml@lancaironline.net] On Behalf Of =0A Wolfgang
Sent: M= onday, January 28, 2013 11:01 AM
To: =0A lml@lancaironline.netSubject: [LML] Re: Thermal influence on =0A Hydraulic Pressure
=0A
  =0A
=0A
Understood . . . =0A b= ut a module like mine doesn't care what version your pump is, it just =0A = works.
=0A
=0A
 
=0A
=0A
Wolfg= ang
=0A
=0A
 
=0A
=0A
=0A
----- Origina= l =0A Message -----
=0A
=0A
From: = Chris =0A Zavatson
=0A
=0A To: lml@lancaironline.net =0A <= /span>
=0A
=0A
Se= nt: Sunday, January =0A 27, 2013 6:59 AM
=0A =
=0A
Subject: Re: [LML] Re: = =0A Thermal influence on Hydraulic Pressure
=0A =0A
 
=0A =
=0A
=0A
Charley,
=0A
=0A
Lancair started =0A adding return s= prings inside the spool valve for Legacy pumps in about =0A 2005.  = One of the consequences of doing this is what you have observed =0A in t= he hangar.  You sort of have a 'get out of jail free' card in that =0A= your hydraulic system has a three-way valve.  It doesn't prevent t= he =0A lock-up.  It just gives you a way out.  Folks installin= g the =0A 'Legacy' pump in 300 series plane with a two-way valve can get= stuck.  =0A Fortunately the springs are easily removed and Parker = has been providing the =0A parts free-of-charge to reset pumps back to t= he pre-2005 configuration.<= /div>
=0A
=0A
Chris
=0A
=0A
 
=0A <= div>=0A
Chris = =0A Zavatson
=0A
=0A
N91CZ
=0A
= =0A
<= span style=3D'color: black; font-family: "Arial", "sans-serif";'>360std. 1,= 400 =0A hrs
=0A
=0A
http://www.n91cz.net/
=0A
=0A
=0A Charles Brown <browncc1@verizon.net>
To: =0A lml@lancaironline.net =0A
= Sent: Friday, January 25, 2013 11:07 PM
Subject: [LML] =0A = Re: Thermal influence on Hydraulic Pressure
=0A
 
= =0A
=0A
=0A
=0A
This =0A has happened to me even at the beginning of a fligh= t, if the temps in the =0A hangar have gone from cold on a previous day,= to warm on flight day.  I =0A guess cold temps shrink the fluid an= d suck more from the reservoir into the =0A lines, and when it warms, th= e pressure builds on both sides of the system, =0A so that the "up" and = "down" pressure switches are both open and the gear =0A won't move until= I pop the bleed valve.
=0A
=0A
 
=0A
=0A
&= nbsp;
=0A
=0A
Charley B= rown
=0A
=0A
Legacy #29= 9  200 hr
=0A
 
=0A
=0A
=0A
On =0A Jan= 25, 2013, at 7:23 AM, randy snarr= =0A wrote:
=0A
=0A
=0A
=0A =
 
=0A
=0A
. I <= span class=3D"yiv1763350649mark">dont like having to open the dump v= alve but it is =0A necessary once in a while especially when it is cold.= The pressures on both =0A sides of the system climb due to the engine h= eat and the gear sometimes will =0A not move without dumping the =0A = pressure.
=0A
 
=0A
 
=0A
  =0A
=0A


= ---1682663710-487268199-1359479791=:75997--