X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 14 Apr 2010 08:49:12 -0400 Message-ID: X-Original-Return-Path: Received: from imr-mb01.mx.aol.com ([64.12.207.164] verified) by logan.com (CommuniGate Pro SMTP 5.3.5) with ESMTP id 4220169 for lml@lancaironline.net; Tue, 13 Apr 2010 13:52:23 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.207.164; envelope-from=Sky2high@aol.com Received: from imo-ma02.mx.aol.com (imo-ma02.mx.aol.com [64.12.78.137]) by imr-mb01.mx.aol.com (8.14.1/8.14.1) with ESMTP id o3DHpe9L023064 for ; Tue, 13 Apr 2010 13:51:40 -0400 Received: from Sky2high@aol.com by imo-ma02.mx.aol.com (mail_out_v42.9.) id q.cc6.6a08af63 (43826) for ; Tue, 13 Apr 2010 13:51:34 -0400 (EDT) Received: from magic-d24.mail.aol.com (magic-d24.mail.aol.com [172.19.146.158]) by cia-dc01.mx.aol.com (v127_r1.2) with ESMTP id MAILCIADC017-ab324bc4af262c1; Tue, 13 Apr 2010 13:51:34 -0400 From: Sky2high@aol.com X-Original-Message-ID: <1fa3d.3a66a79a.38f60926@aol.com> X-Original-Date: Tue, 13 Apr 2010 13:51:34 EDT Subject: Re: [LML] Re: gear retract problems - 320 X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_1fa3d.3a66a79a.38f60926_boundary" X-Mailer: AOL 9.5 sub 155 X-AOL-ORIG-IP: 205.188.66.133 X-AOL-IP: 172.19.146.158 X-Spam-Flag:NO X-AOL-SENDER: Sky2high@aol.com --part1_1fa3d.3a66a79a.38f60926_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Bill, While one could expect the gear to not come down, there are many imbalances while the gear is up - gravity and the nose gear gas spring come to mind - this should relieve the pressure as soon as the dump valve is selected. On the other hand, the gear down and locked is in a very stable condition - so one should only need such a switch for gear retraction. Scott In a message dated 4/12/2010 6:48:03 A.M. Central Daylight Time, n5zq@verizon.net writes: Angier, I think that you'd need 2 push buttons, one for each pressure switch. Wiring both pressure switches to one push button would be trying to run the pump in both directions at once. Bill Harrelson N5ZQ 320 1,750 hrs N6ZQ IV under construction So, would not the simple solution be to wire both sides of each pressure switch to a momentary push button switch? I have gages installed and so can observe the hi/lo pressures. A push of the momentary switch should start the pump. Angier Ames N4ZQ ...moving ever closer to first flight... -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html --part1_1fa3d.3a66a79a.38f60926_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Bill,

While one could expect the gear to not come down, there are many imba= lances=20 while the gear is up - gravity and the nose gear gas spring come to mind= - this=20 should relieve the pressure as soon as the dump valve is selected.

On the other hand, the gear down and locked is in a very stable= =20 condition - so one should only need such a switch for gear retraction.

Scott

In a message dated 4/12/2010 6:48:03 A.M. Central Daylight Time,=20 n5zq@verizon.net writes:

Angier,

I think that you'd need 2 pus= h buttons, one for each=20 pressure switch.
Wiring both pressure switches to one push button wou= ld be=20 trying to run
the pump in both directions at once.

Bill=20 Harrelson
N5ZQ 320 1,750 hrs
N6ZQ IV under=20 construction

So, would not th= e=20 simple solution be to wire both sides of each
pressure switch= to a=20 momentary push button switch?
I have gages installed and so can obser= ve the=20 hi/lo pressures. A push
of the momentary switch should start= the=20 pump.

Angier Ames
N4ZQ
...moving ever closer to first=20 flight...

--
For archives and unsub=20 http://mail.lancaironline.net:81/lists/lml/List.html

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