X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 18 Dec 2011 09:30:00 -0500 Message-ID: X-Original-Return-Path: Received: from nschwmtas01p.mx.bigpond.com ([61.9.189.137] verified) by logan.com (CommuniGate Pro SMTP 5.4.2) with ESMTP id 5308770 for lml@lancaironline.net; Sat, 17 Dec 2011 08:17:03 -0500 Received-SPF: pass receiver=logan.com; client-ip=61.9.189.137; envelope-from=frederickmoreno@bigpond.com Received: from nschwcmgw05p ([61.9.190.165]) by nschwmtas01p.mx.bigpond.com with ESMTP id <20111217131626.MQFL24049.nschwmtas01p.mx.bigpond.com@nschwcmgw05p>; Sat, 17 Dec 2011 13:16:26 +0000 Received: from Razzle ([139.168.138.47]) by nschwcmgw05p with BigPond Outbound id ADGH1i00611Yg4T01DGNF4; Sat, 17 Dec 2011 13:16:26 +0000 X-Authority-Analysis: v=2.0 cv=Wq6pwKjv c=1 sm=1 a=1MEV+vvq0WqZ+9KNoWx8EQ==:17 a=JDadKst33uMA:10 a=8nJEP1OIZ-IA:10 a=Ia-xEzejAAAA:8 a=biznXsr5AAAA:8 a=vpPJFt6SG3hVPinTmwcA:9 a=F0t0nS4dhHDOwxKHnJYA:7 a=wPNLvfGTeEIA:10 a=8s3OY_6JReoA:10 a=EzXvWhQp4_cA:10 a=_t_1yJFI0kZCkiD_vlIA:9 a=PnrNnnJeUqccYpEzBAcA:7 a=amP8cGQ10gkA:10 a=1MEV+vvq0WqZ+9KNoWx8EQ==:117 MIME-Version: 1.0 X-Original-Message-Id: <4EEC962E.00001B.01504@RAZZLE> X-Original-Date: Sat, 17 Dec 2011 21:16:30 +0800 Content-Type: Multipart/Alternative; charset="iso-8859-1"; boundary="------------Boundary-00=_IJNC4961VA4000000000" X-Mailer: IncrediMail (6244788) From: "Frederick Moreno" References: X-FID: FLAVOR00-NONE-0000-0000-000000000000 X-Priority: 3 X-Original-To: X-Original-Cc: "Lancair Mail (lml@lancaironline.net)" Subject: Re: MGL back up instrumentr --------------Boundary-00=_IJNC4961VA4000000000 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi John: =0D =0D I had the same problem with an altimeter, new out of the box, but I had i= t in storage for eight years. Off to the shop where I learned that this is= a common problem. The sealant around the glass cracks. This is the most common cause of a flunked static system test. =0D =0D Solution: clear nail polish around the perimeter of the glass. Wicks int= o the crack, but is reasonably tough and flexible, works fine. Expect to reapply every few years, particularly if the cockpit is thermally cycled = a lot due to bigger day/night temperature swings wherever the airplane is stored. =0D =0D F =0D =0D =0D =0D =0D -------Original Message-------=0D =0D From: John Barrett=0D Date: 16/12/2011 10:44:58 PM=0D To: lml@lancaironline.net=0D Subject: MGL back up instrumentr=0D =0D Infinity line MGL instruments =96 they are intriguing as back up gauges. = =0D =0D Looks like the altimeter is Baro sensitive for input but needs electrons = for output. I spoke with Matt at their US distributor center and learned tha= t it uses pitot static inputs to pressure sensors that generate output data for microprocessor to turn into altitude readout. =0D =0D Without electricity the gauge does not function, losing the microprocessi= ng component as well as the LCD display output. Does this mean that in orde= r to have good backup one would need to have a totally mechanical altimete= r?=0D =0D Have found that two of my cheap 2.25=94 gauges are failed with case leaks= =2E=20 Have had them awhile but as far as I know they haven=92t been mishandled.= I know the airspeed gauge is UMA. I suspect the altimeter is the same bra= nd. These are the two failed instruments.=0D =0D Advice welcome.=0D =0D John Barrett=0D =0D =0D =0D =0D =0D Regards,=0D =0D John Barrett, CEO=0D Leading Edge Composites=0D PO Box 428=0D Port Hadlock, WA 98339=0D =0D www.carbinge.com=0D =0D =20 --------------Boundary-00=_IJNC4961VA4000000000 Content-Type: Text/HTML; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi John:

I had the same problem with an altimeter, new out of the box, but I = had it in storage for eight years. Off to the shop where I learned = that this is a common problem. The sealant around the glass&nb= sp;cracks. This is the most common cause of a flunked static s= ystem test.

Solution: clear nail polish around the perimeter of the glass. = Wicks into the crack, but is reasonably tough and flexible, works f= ine. Expect to reapply every few years, particularly if the co= ckpit is thermally cycled a lot due to bigger day/night temperature swing= s wherever the airplane is stored.

F

-= ------Original Message-------

From: John Barrett

Date: 16/12/2011 1= 0:44:58 PM

To: lml@lancaironline.net

Subject: MGL back = up instrumentr

Infinity line MGL instruments =96 they are intriguin= g as back up gauges.

Looks like the altimeter is Baro sensitive for input= but needs electrons for output. I spoke with Matt at their US dist= ributor center and learned that it uses pitot static inputs to pressure s= ensors that generate output data for microprocessor to turn into altitude= readout.

Without electricity the gauge does not function, los= ing the microprocessing component as well as the LCD display output. = ; Does this mean that in order to have good backup one would need to have= a totally mechanical altimeter?

Have found that two of my cheap 2.25=94 gauges are f= ailed with case leaks. Have had them awhile but as far as I know th= ey haven=92t been mishandled. I know the airspeed gauge is UMA.&nbs= p; I suspect the altimeter is the same brand. These are the&n= bsp; two failed instruments.

Advice welcome.

John Barrett

Regards,

John Barrett, CEO

Leading Edge Composites

PO Box 428

Port Hadlock, WA 98339

www.carbinge.com

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