X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 22 May 2009 15:44:32 -0400 Message-ID: X-Original-Return-Path: Received: from imr-m06.mx.aol.com ([64.12.138.200] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3649145 for lml@lancaironline.net; Thu, 21 May 2009 08:07:54 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.138.200; envelope-from=Sky2high@aol.com Received: from imo-da03.mx.aol.com (imo-da03.mx.aol.com [205.188.169.201]) by imr-m06.mx.aol.com (v107.10) with ESMTP id RELAYIN2-34a1543f372; Thu, 21 May 2009 08:07:15 -0400 Received: from Sky2high@aol.com by imo-da03.mx.aol.com (mail_out_v40_r1.5.) id q.c28.576f9907 (30740) for ; Thu, 21 May 2009 08:07:06 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Thu, 21 May 2009 08:07:05 EDT Subject: Re: [LML] Gear Relays are not working X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1242907625" X-Mailer: AOL 9.1 sub 5006 X-Spam-Flag:NO X-AOL-IP: 205.188.169.201 -------------------------------1242907625 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Bryan, While the plane is on jacks, one test would be to open the dump valve (relieve all pressure) and see if the pump runs in the gear down direction, but not in the up. This would suggest that there is some sort of "squat" switch. If so, the most frequently used one relies on pitot-static pressure so the gear cannot be retracted until 70 KIAS is exceeded. Some simply bypass the switch with a jumper when doing the gear checks while others may have installed a bypass switch, sometimes hidden behind the panel. Scott Krueger In a message dated 5/21/2009 5:24:34 A.M. Central Daylight Time, vonjet@gmail.com writes: My lancair 360 was wired professionally. When we tried to do the gear retraction tests.....nothing. We checked all the wires and made sure all were getting power where they should. Checked the breakers, switch etc. We overran the relay and the motor ran so we figured it was a bad relay......went to Napa and bought 2 new relays today. Installed them. Same thing....nothing. Then we remembered that the relays were mounted to a fiberglass bulkhead and the case needed to be grounded so we attached a ground from the relay mounting base to ground bar. Tried the gear.....now it worked...BUT it instantly fried the ground wire on the relay small terimal......tried to measure the ohms of the relays and no resistance....how could it be that I have 4 dead relays all brand new? So today I installed a Master Relay. The ones that are all metal case. Now the gear works and no wires are getting fried........but Im not happy with this result as it makes no sense why the normal relays for this job aren't working....anybody have any ideas? Bryan **************Huge savings on HDTVs from Dell.com! (http://pr.atwola.com/promoclk/100126575x1221836042x1201399880/aol?redir=http:%2F%2Fad.doubleclick.ne t%2Fclk%3B215073686%3B37034322%3Bb) -------------------------------1242907625 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
Bryan,
 
While the plane is on jacks, one test would be to open the dump= valve (relieve all pressure) and see if the pump runs in the gear down dire= ction, but not in the up.  This would suggest that there is some sort o= f "squat" switch.  If so, the most frequently used one relies on pitot-= static pressure so the gear cannot be retracted until 70 KIAS is exceeded. = Some simply bypass the switch with a jumper when doing the gear checks while ot= hers may have installed a bypass switch, sometimes hidden behind the panel. 
 
Scott Krueger
 
In a message dated 5/21/2009 5:24:34 A.M. Central Daylight Time, vonjet@gmail.com writes:
My lancair 360 was wired professionally. When we tried to do the gear retra= ction tests.....nothing. We checked all the wires and made sure all were getti= ng power where they should. Checked the breakers, switch etc. 
We overran the relay and the motor ran so we figured it was a bad= relay......went to Napa and bought 2 new relays today. Installed them.= Same thing....nothing.  Then we remembered that the relays were mounted= to a fiberglass bulkhead and the case needed to be grounded so we attached a= ground from the relay mounting base to ground bar. 
Tried the gear.....now it worked...BUT it instantly  fried the= ground wire on the relay small terimal......tried to measure the ohms of= the relays and no resistance....how could it be that I have 4 dead relays al= l brand new?
So today I installed a Master Relay.  The ones that are all me= tal case. Now the gear works and no wires are getting fried........but Im no= t happy with this result as it makes no sense why the normal relays for th= is job aren't working....anybody have any ideas?

Bryan

Hug= e savings on HDTVs from Dell.com!
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