X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 08 Feb 2011 14:58:32 -0500 Message-ID: X-Original-Return-Path: Received: from web33905.mail.mud.yahoo.com ([209.191.69.183] verified) by logan.com (CommuniGate Pro SMTP 5.4c2a) with SMTP id 4841841 for lml@lancaironline.net; Tue, 08 Feb 2011 00:12:58 -0500 Received-SPF: none receiver=logan.com; client-ip=209.191.69.183; envelope-from=wfhannahan@yahoo.com Received: (qmail 32770 invoked by uid 60001); 8 Feb 2011 05:12:22 -0000 DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=AxevknU4E2tUubhOMb1oAP1NW+aYSd318Zlj8vKPyW0uOcg0e+OawNb60wdrdVAfxc4G3NhZHCyMztDv1oeTzc7R/GGdtMuU+Cpy8NymqGrIKmIVgjfmRBUhH/DwkvfqisUQPoN453L+ofbwX2ec2on8kIg8znbJtygO/KkSvyk=; X-Original-Message-ID: <203514.32496.qm@web33905.mail.mud.yahoo.com> X-YMail-OSG: ZYZu7cwVM1l4tyVOmYUX0na9d.0vaemPd4xWTZcCJtuy3u. U_hbu8VQcKWEaWEC_R5vc.80xsTVpeBQ9ug.uWJ4OX76WuraYEkQGlLO8dYY woWHYXCnnYqMleUHDw3JW6VrZH5gBgRwyc63o7Gg0bWY_5NJyDIbD5TkWkDZ 22o3maXh_AgxcCLXDwa.IuJwdKrKzZoop4va7TpgjESk6fTzYU_lcC82WE6D z2sZPzPnd0OgbjonOXWXV.bTcyeUVlt3QcEtBn3w.RiBRvCuA.zpm7QUJFXV 1XguXC2oSGujLugspfSAGtI82ZjHo1SUIqNTs61drhNgm4qI- Received: from [174.29.171.130] by web33905.mail.mud.yahoo.com via HTTP; Mon, 07 Feb 2011 21:12:22 PST X-Mailer: YahooMailClassic/11.4.20 YahooMailWebService/0.8.108.291010 X-Original-Date: Mon, 7 Feb 2011 21:12:22 -0800 (PST) From: Bill Hannahan Subject: LNC2 Hydraulic Landing Gear Pressure Switch Wear Issues X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-789010398-1297141942=:32496" --0-789010398-1297141942=:32496 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Great idea, but my relay coils (vintage 1990 360) require 4 amps, tested to= day, perhaps 5 amps with engine running. We would need a power transistor t= o supply the required current. Anybody know of a similar PS with a 5A or greater rating? Regards, Bill Hannahan =20 wfhannahan@yahoo.com --- On Mon, 2/7/11, Bruce wrote: From: Bruce Subject: [LML] Re: LNC2 Hydraulic Landing Gear Pressure Switch Wear Issues To: lml@lancaironline.net Date: Monday, February 7, 2011, 8:18 PM =0A=0A=0A=0A =0A=0A=0A =0A =0A =0A =0A=0A=0A=0A=0A=0A=0A=0AI would think th= at =BD=0Aamp at 14v should be enough. =0A=0A =A0 =0A=0A=0A=0ABruce =0AWWW.Glasair.org =0A=0A=0A=0A-----Original Message----- =0AFrom: Lancair Mailing List=0A[mailto:lml@lancaironline.net] On Behalf Of= Sky2high@aol.com =0ASent: Monday, February 07, 2011=0A2:53 PM =0ATo: lml@lancaironline.net =0ASubject: [LML] Re: LNC2 Hydraulic=0ALanding Gear Pressure Switch Wear Is= sues=0A=0A =A0 =0A=0A=0A=0ATheir=0Aspecs look great.=A0 Is the 500 mA curre= nt limitation adequate for operating=0Aclunky 12 VDC intermittent relays=A0= (the pump power switch relays)? =0A=0A=0A=0A=0A=0A=A0 =0A=0A=0A=0A=0A=0AGra= yhawk =0A=0A=0A=0A=0A=0A=A0 =0A=0A=0A=0A=0A=0A=0A=0AIn a=0Amessage dated 2/= 7/2011 11:32:18 A.M. Central Standard Time, BGray@glasair.org=0Awrites: =0A= =0A=0A=0A=0A=0A=0A=0ASeveral of our guys (including me) have=0Ajunked our m= echanical pressure switches and moved to solid state adjustable=0Aswitches.= =0A=0A =A0 =0A=0Ahttp://www.automationdirect.com/adc/Search/Search?searchq= uery=3DPSD25-OP-5800H&cmd=3DSearch&fctype=3Dadc.falcon.search.SearchFormCtr= l&TxnNumber=3D-1 =0A=0A =A0 =0A=0A =A0 =0A=0A=0A=0ABruce =0AWWW.Glasair.org =0A=0A=0A=0A-----Original Message----- =0AFrom: Lancair Mailing List=0A[mailto:lml@lancaironline.net] On Behalf Of= Don=0AGordon =0ASent: Monday, February 07, 2011=0A7:45 AM =0ATo: lml@lancaironline.net =0ASubject: [LML] LNC2 Hydraulic=0ALanding Gear Pressure Switch Wear Issues= =0A=0A =A0 =0A=0AI have recently=0Areplaced both my high pressure and low = pressure switches in the hydraulic=0Asystem for the landing gear.=A0 These = switches began to have trouble=0Aproviding a positive and discrete on/off e= vent when the hydraulic pressure=0Areached the prescribed limits.=A0 I bega= n to hear strange crackling and=0Astatic noises in my headset just prior to= the hydraulic pump running (though it=0Awould just run for a fraction of a= second to re-pressurize).=A0 These=0Astrange sounds in my headset began to= occur longer and longer prior to the pump=0Atripping on.=A0 I also began t= o notice some other odd electrical issues with=0Athe aircraft.=A0 Finally, = I began to suspect these switches were faulty are=0Areplaced both of them.= =A0 The problem went away and so did my electrical=0Aissues I experienced. = =0A=0A =A0 =0A=0A =A0 =0A=0A=0A=0A=0A=0A=0A=0A=0A=0A =0A=0A=0A=0A=0A --0-789010398-1297141942=:32496 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Great idea, but my relay coils (vintage 1990 = 360) require 4 amps, tested today, perhaps 5 amps with engine running. We w= ould need a power transistor to supply the required current.

Anybody= know of a similar PS with a 5A or greater rating?

Regards,
Bill Hannahan

--- On Mon, 2/7/11, Bruce <BGray@glasair.org> wrote:<= br>

From: Bruce <BGray@glasair.org>
Su= bject: [LML] Re: LNC2 Hydraulic Landing Gear Pressure Switch Wear IssuesTo: lml@lancaironline.net
Date: Monday, February 7, 2011, 8:18 PM
=0A=0A=0A=0A =0A=0A=0A =0A =0A =0A =0A=0A=0A=0A=0A=0A
=0A=0A

I would think that =BD=0Aamp at 14v should be en= ough.

=0A=0A

 

=0A=0A
=0A=0A

= Bruce
=0AWWW.Glasair.org

= =0A=0A
=0A=0A

-----Original Message-----
=0AFrom: Lancair Mailing List=0A[mailto:lml@lancai= ronline.net] On Behalf Of = Sky2high@aol.com
=0ASent: Monday, February 07, 2011=0A2:53 PM
=0ATo: lml@lancaironline.net
=0ASubject: [LML] Re: LNC2 Hydraulic=0ALanding Gear P= ressure Switch Wear Issues

=0A=0A

 

=0A=0A=0A=0A

= Their=0Aspecs look great.  Is = the 500 mA current limitation adequate for operating=0Aclunky 12 VDC interm= ittent relays (the pump power switch relays)?

=0A=0A=
=0A=0A
=0A=0A

 

=0A=0A
=0A=0A
=0A=0A

<= span style=3D"font-size: 10pt; font-family: Arial; color: black;">Grayhawk<= /span>

=0A=0A
=0A=0A
=0A=0A

 

=0A=0A
=0A=0A
=0A=0A
=0A=0A

In a=0Amessage dated 2/7/2011 11:32:18 A.M. Central= Standard Time, BGray@glasair.org=0Awrites:

=0A=0A
= =0A=0A
=0A=0A
=0A=0A

Several of our guys (including me) have=0Ajunked our mechan= ical pressure switches and moved to solid state adjustable=0Aswitches.

=0A=0A

 

= =0A=0A

http://www.automationdirect.com/adc/= Search/Search?searchquery=3DPSD25-OP-5800H&cmd=3DSearch&fctype=3Dad= c.falcon.search.SearchFormCtrl&TxnNumber=3D-1

=0A= =0A

 

=0A=0A

 

=0A=0A
=0A=0A

Bruce
=0AWWW.Glasair.org =

= =0A=0A
=0A=0A

-----Original Message-----=
=0AFrom: Lancair Maili= ng List=0A[mailto:lml@lancaironline.net] On Behalf Of Don=0AGordon
=0ASent: Monday, February 07, 2011=0A7:45 AM
=0ATo: lml@lancaironline.net
=0A= Subject: [LML] LNC2 Hydrau= lic=0ALanding Gear Pressure Switch Wear Issues

=0A=0A

 

=0A=0A

I have recently=0Areplaced both my high pressure and low pressure= switches in the hydraulic=0Asystem for the landing gear.  These switc= hes began to have trouble=0Aproviding a positive and discrete on/off event = when the hydraulic pressure=0Areached the prescribed limits.  I began = to hear strange crackling and=0Astatic noises in my headset just prior to t= he hydraulic pump running (though it=0Awould just run for a fraction of a s= econd to re-pressurize).  These=0Astrange sounds in my headset began t= o occur longer and longer prior to the pump=0Atripping on.  I also beg= an to notice some other odd electrical issues with=0Athe aircraft.  Fi= nally, I began to suspect these switches were faulty are=0Areplaced both of= them.  The problem went away and so did my electrical=0Aissues I expe= rienced.

=0A=0A

 <= /span>

=0A=0A

 

=0A=0A
=0A=0A
=0A=0A
=0A=0A
=0A=0A =0A= =0A

=0A=0A --0-789010398-1297141942=:32496--