X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 23 Sep 2013 08:04:14 -0400 Message-ID: X-Original-Return-Path: Received: from nschwmtas05p.mx.bigpond.com ([61.9.189.149] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTP id 6484248 for lml@lancaironline.net; Fri, 20 Sep 2013 19:50:50 -0400 Received-SPF: none receiver=logan.com; client-ip=61.9.189.149; envelope-from=john@jjts.net.au Received: from nschwcmgw06p ([61.9.190.166]) by nschwmtas05p.mx.bigpond.com with ESMTP id <20130920235015.CIQQ2020.nschwmtas05p.mx.bigpond.com@nschwcmgw06p> for ; Fri, 20 Sep 2013 23:50:15 +0000 Received: from [192.168.15.14] ([110.142.219.220]) by nschwcmgw06p with BigPond Outbound id Tbpz1m0024luXCm01bq0q6; Fri, 20 Sep 2013 23:50:15 +0000 X-Authority-Analysis: v=2.0 cv=dewCLAre c=1 sm=1 a=6xIvA0WTx9AVOJiHBW+VeQ==:17 a=KWCKX4AzZ3IA:10 a=mCSqThwqAAAA:8 a=1ccHrMj6d_EA:10 a=VJrghdZfr7MCVSPNLrwA:9 a=wPNLvfGTeEIA:10 a=rnYgdqcAs4AA:10 a=_r3cmpFalXTQhF8LAYYA:9 a=_W_S_7VecoQA:10 a=FvDKc1S8V1DuB2oU:21 a=6xIvA0WTx9AVOJiHBW+VeQ==:117 User-Agent: Microsoft-MacOutlook/14.3.7.130812 X-Original-Date: Sat, 21 Sep 2013 07:49:58 +0800 Subject: Re: [LML] Canopy Latching From: John Smith X-Original-To: Lancair Mailing List X-Original-Message-ID: Thread-Topic: [LML] Canopy Latching In-Reply-To: Mime-version: 1.0 Content-type: multipart/alternative; boundary="B_3462594602_197958" > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3462594602_197958 Content-type: text/plain; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable Further to Dan's comments, and if helpful to others:- * I installed two micro switches in series. One on the internal latch handle, and one on the cockpit opening joggle. Thus, the canopy must be properly seated (I have the micro switch adjusted to within ~1mm) AND the internal handle must be in the closed position before the alarm is cleared. * Whilst this alarm shows up on my general annunciator panel, its not easy to see when the cockpit is flooded with sunlight; there is presently no aural alarm. I'm now working on feeding the alarm into the EFIS with a larg= e visual screen message accompanied with an aural alarm; will may be try linking to engine rpm (something like if rpm >1500, then=8A) I have had similar ideas to your's Bill around using an inertia reel seat belt attached to top of canopy and anchored behind seats. If one puts appropriate anchors within the canopy frame during the build, that's one thing =AD but with a finished aircraft=8A not quite so easy. Did you figure out a way to effectively "retro fit" a solid anchor to the canopy? Regards, John VH-XTZ =20 John N G Smith Tel / fax: +61-8-9385-8891 Mobile: +61-409-372-975 Email: john@jjts.net.au --B_3462594602_197958 Content-type: text/html; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable

Further to Dan's commen= ts, and if helpful to others:-

I installed two micro switches i= n series. One on the internal latch handle, and one on the cockpit opening j= oggle. Thus, the canopy must be properly seated (I have the micro switch adj= usted to within ~1mm) AND the internal handle must be in the closed position= before the alarm is cleared.
Whilst this alarm shows up on my gener= al annunciator panel, its not easy to see when the cockpit is flooded with s= unlight; there is presently no aural alarm. I'm now working on feeding the a= larm into the EFIS with a large visual screen message accompanied with an au= ral alarm; will may be try linking to engine rpm (something like if rpm >= 1500, then…)

I have had similar ideas to = your's Bill around using an inertia reel seat belt attached to top of canopy= and anchored behind seats. If one puts appropriate anchors within the canop= y frame during the build, that's one thing – but with a finished aircr= aft… not quite so easy. Did you figure out a way to effectively "retro= fit" a solid anchor to the canopy?

=

Regards,

= John

VH-XTZ

John N G Smith
Tel / fax:    +61-8-9385-8891
Mobile:      +61-409-372-975
Email:         john@jjts.net.au
=

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