X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 04 Jun 2012 10:48:49 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-galgo.atl.sa.earthlink.net ([209.86.89.61] verified) by logan.com (CommuniGate Pro SMTP 5.4.5) with ESMTP id 5577744 for lml@lancaironline.net; Mon, 04 Jun 2012 09:10:53 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.61; envelope-from=douglasbrunner@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=RR307u4Zp9CKGI/v4f+2tSDOAz10lSM4m0o2nvgLVd8ZBmwlN4YBHhsE6BbFoHq0; h=Received:From:To:References:In-Reply-To:Subject:Date:Message-ID:MIME-Version:Content-Type:X-Mailer:Thread-Index:Content-Language:X-ELNK-Trace:X-Originating-IP; Received: from [67.8.30.30] (helo=DougsVAIO) by elasmtp-galgo.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1SbX35-0007fv-C9 for lml@lancaironline.net; Mon, 04 Jun 2012 09:10:19 -0400 From: "Douglas Brunner" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Re: Speaking of defrost X-Original-Date: Mon, 4 Jun 2012 09:10:19 -0400 X-Original-Message-ID: <007c01cd4253$64c0ad00$2e420700$@net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_007D_01CD4231.DDAF0D00" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ac1CUdSWxGePhrr/TAuVVEKRz0u99wAAN42Q Content-Language: en-us X-ELNK-Trace: ad85a799c4f5de37c2eb1477c196d22294f5150ab1c16ac07c540ca440b21de79695ec3ee598495863838e22d0075697350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 67.8.30.30 This is a multi-part message in MIME format. ------=_NextPart_000_007D_01CD4231.DDAF0D00 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit My presumption is that it came from the defrost. When I built my plane, I put in a duct system beneath the glare shield that directed hot air up to the canopy. In retrospect, I think I made it too effective. I used to leave the defrost on long after the canopy had cleared. I had a long trip "through the soup" in Western Maryland, Pennsylvania and Ohio during which I believe the defrost was on the whole time. Immediately after that leg the canopy showed some significant cracking/crazing. Now I switch immediately from defrost to heat (or off) as soon as the canopy is clear. From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of larry.eversmeyer@faa.gov Sent: Monday, June 04, 2012 8:57 AM To: lml@lancaironline.net Subject: [LML] Re: Speaking of defrost Doug, Where did all of the heat that damage your canopy come from? Larry Eversmeyer still building Legacy Yes, I need defrost - I fly out of KMTN in the Baltimore area. I would suggest judicious use of defrost. Recently had to replace my canopy due to damage from excessive heat. ------=_NextPart_000_007D_01CD4231.DDAF0D00 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

My presumption is that it came from the defrost.  When I built = my plane, I put in a duct system beneath the glare shield that directed = hot air up to the canopy.  In retrospect, I think I made it = too effective.

 

I used to leave the defrost on long after the canopy had = cleared.  I had a long trip “through the soup” in = Western Maryland, Pennsylvania and Ohio during which I believe the = defrost was on the whole time.  Immediately after that leg the = canopy showed some significant cracking/crazing.  =

 

Now I switch immediately from defrost to heat (or off) as soon as the = canopy is clear.

 

From:= = Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = larry.eversmeyer@faa.gov
Sent: Monday, June 04, 2012 8:57 = AM
To: lml@lancaironline.net
Subject: [LML] Re: = Speaking of defrost

 


Doug, Where = did all of the heat that damage your canopy come from? =

Larry = Eversmeyer
still = building Legacy





Yes, I need defrost – I fly out of KMTN in the Baltimore = area.
 
I would suggest judicious use of defrost.  Recently had to = replace my canopy due to damage from excessive heat.
 

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