X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 10 Mar 2014 10:57:01 -0400 Message-ID: X-Original-Return-Path: Received: from mail-yh0-f52.google.com ([209.85.213.52] verified) by logan.com (CommuniGate Pro SMTP 6.0.8) with ESMTPS id 6768085 for lml@lancaironline.net; Mon, 10 Mar 2014 09:29:35 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.213.52; envelope-from=toddlong1@gmail.com Received: by mail-yh0-f52.google.com with SMTP id c41so400025yho.39 for ; Mon, 10 Mar 2014 06:29:03 -0700 (PDT) X-Received: by 10.236.191.130 with SMTP id g2mr217950yhn.160.1394458142781; Mon, 10 Mar 2014 06:29:02 -0700 (PDT) X-Original-Return-Path: Received: from [10.75.234.31] ([166.170.59.17]) by mx.google.com with ESMTPSA id w8sm56458442yhg.8.2014.03.10.06.29.00 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 10 Mar 2014 06:29:02 -0700 (PDT) Content-Type: multipart/alternative; boundary=Apple-Mail-7939DA18-F831-48E5-B7C3-C7C042511DE0 Content-Transfer-Encoding: 7bit Subject: Re: [LML] IV-P Landing/Taxi Light Location References: From: Todd Long In-Reply-To: X-Original-Message-Id: X-Original-Date: Mon, 10 Mar 2014 08:10:10 -0500 X-Original-To: Lancair Mailing List Mime-Version: 1.0 (1.0) X-Mailer: iPad Mail (11B651) --Apple-Mail-7939DA18-F831-48E5-B7C3-C7C042511DE0 Content-Type: text/plain; charset=windows-1251 Content-Transfer-Encoding: quoted-printable What kind of landing light? I have a nice bright led in my right cowl and no= overheat problems.=20 Sent from my iPad > On Mar 10, 2014, at 6:31, "Jay Phillips" wrote: >=20 > My IV-P has the landing/taxi light located in the right-hand cowling inlet= . > =20 > Since I=92ve owned the aircraft (2011) it=92s been a challenge to manage t= he engine cooling during climb. My home field is at 5100=92. I climb at 165 K= IAS. By 13,000=92 or so my hottest CHT is 400 dF and I have to reduce climb r= ate or level off for a few minutes to start the CHT=92s back down. This situ= ation occurs both winter and summer, although it is worse on a hot day. > =20 > While training with Bob Jeffrey recently, he suggested I try removing the l= anding light to see what effect that has on cooling. So I tried it yesterday= and, apparently, problem solved. After takeoff I climbed at 165 KIAS all th= e way to 17,500=92 and my hottest CHT only got as high as 392 dF. Indeed the= CHTs had begun trending down. > =20 > So it seems that I need to find a new location to mount the landing/taxi l= ight. The obvious location, that doesn=92t involve cutting composite, is the= nose gear. Can anyone who has a IV-P with a light mounted there provide gui= dance as to: type of light, mounting hardware, clearance issues, and anythin= g else I should be aware of? > =20 > Thanks, > =20 > Jay Phillips > =20 --Apple-Mail-7939DA18-F831-48E5-B7C3-C7C042511DE0 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable

What kind of landing light? I have a n= ice bright led in my right cowl and no overheat problems.

Sent from my iPad

On Mar 10, 2014, at 6:31, "Jay Phillips" &= lt;jayph@fastairplane.net> w= rote:

My IV-P has the landing/taxi light located in the right-hand cowlin= g inlet.

Since I=E2=80=99ve owned the aircraft (2011) it=E2=80=99s been a= challenge to manage the engine cooling during climb. My home field is at 51= 00=E2=80=99. I climb at 165 KIAS. By 13,000=E2=80=99 or so my hottest CHT is= 400 dF and I have to reduce climb rate or level off for a few minutes to st= art the CHT=E2=80=99s back down. This situation occurs both winter and summe= r, although it is worse on a hot day.
<= o:p>
While training with Bob Jeffrey r= ecently, he suggested I try removing the landing light to see what effect th= at has on cooling. So I tried it yesterday and, apparently, problem solved. A= fter takeoff I climbed at 165 KIAS all the way to 17,500=E2=80=99 and my hot= test CHT only got as high as 392 dF. Indeed the CHTs had begun trending down= .

So it seems that I need to find a new location to mount the landing/t= axi light. The obvious location, that doesn=E2=80=99t involve cutting compos= ite, is the nose gear. Can anyone who has a IV-P with a light mounted there p= rovide guidance as to: type of light, mounting hardware, clearance issues, a= nd anything else I should be aware of?
=
Thanks,

Jay Phillips

= = --Apple-Mail-7939DA18-F831-48E5-B7C3-C7C042511DE0--