X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 25 Apr 2010 03:21:49 -0400 Message-ID: X-Original-Return-Path: Received: from qmta01.emeryville.ca.mail.comcast.net ([76.96.30.16] verified) by logan.com (CommuniGate Pro SMTP 5.3.5) with ESMTP id 4232102 for lml@lancaironline.net; Fri, 23 Apr 2010 12:44:49 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.30.16; envelope-from=jmorgan1023@comcast.net Received: from omta17.emeryville.ca.mail.comcast.net ([76.96.30.73]) by qmta01.emeryville.ca.mail.comcast.net with comcast id 93yD1e00C1afHeLA14kCZw; Fri, 23 Apr 2010 16:44:12 +0000 Received: from [192.168.1.103] ([71.238.169.160]) by omta17.emeryville.ca.mail.comcast.net with comcast id 94k91e00H3Tz7YP8d4kBmL; Fri, 23 Apr 2010 16:44:12 +0000 X-Original-Message-Id: <6F7A3633-DAD5-4656-9658-F140F87487AB@comcast.net> From: Jack Morgan X-Original-To: Lancair Mailing List In-Reply-To: Content-Type: multipart/alternative; boundary=Apple-Mail-1--471411582 Mime-Version: 1.0 (Apple Message framework v936) Subject: Re: [LML] landing light 4P X-Original-Date: Fri, 23 Apr 2010 12:44:07 -0400 References: X-Mailer: Apple Mail (2.936) --Apple-Mail-1--471411582 Content-Type: text/plain; charset=WINDOWS-1252; format=flowed; delsp=yes Content-Transfer-Encoding: quoted-printable I can confirm that the cylindrical lights supplied by Lancair will not =20= fit on the new strut. The new strut is larger in diameter and the =20 light sticks out below the gear door plane. I mounted them on the =20 intake pipes on the engine thinking that the isolation of the hoses =20 mounting the intake pipes plus another rubber isolation below the =20 light itself might allow them to survive the vibration. We will see as =20= the airplane should see first flight in a couple of months. Jack Morgan > From: "F. Barry Knotts" > Date: April 22, 2010 4:08:59 PM GMT-04:00 > To: lml@lancaironline.net > Subject: Re: [LML] landing light 4P > > > When I purchased my IV-P it had the 2.2" cylindrical lights. One on =20= > the nose wheel strut and one on the co-pilot side intake. It also =20 > had 2 HID lights in the wingtips. I've taken both cylindrical =20 > lights off. Even for taxi I found them less than what I felt I =20 > needed. But to answer your questions: > > The mount on the strut was marginal. It was mounted using the same =20= > hose clamps as the firewall closeout shield. With the new style =20 > strut, I'm not sure where it would fit. Mine fell off when the =20 > mounting screws that held the cylindrical case to the metal loop =20 > that the hose clamp passed through backed out due to vibration. I =20 > was not aware of any interference with the nose gear or doors. (No =20= > witness marks on the interior of the doors.) Photo is attached. > > The mount for the light in the intake port was very secure. It was =20= > mounted on the alternator. Not sure if that was wise, but it seemed =20= > to work well and did not require the wiring to flex with each take-=20 > off / landing cycle. The lamp was mounted on a piece of phenolic =20 > which was mounted to ground studs on the alternator. I had no =20 > cooling problems (related to that.) You should have a port in the =20 > baffling in front of the #5 cylinder. Photo attached. > > I have replaced that light with a MicroSun LED landing light which I =20= > use as a taxi light. It would be OK for a landing light, if I =20 > didn't already have the HIDs in the wingtips. If you would like a =20 > photo of the MicroSun LED light, let me know. The next time I am at =20= > the hangar, I will take one. > > Barry Knotts > Lancair IV-P N4XE > Conti TSIO-550 > > bronnenmeier@GROBSYSTEMS.COMwrote: >> >> Dear subscribers, >> >> I had to remove my landing light from my lower cowl due to an =20 >> interference with my baffling/cool air duct for the cabin. >> >> I now bought the 2 halogen lights from Lancair. >> >> Question: where do I mount them? I have seen 2 possibilities so far: >> On the nose wheel strut =96 I recall seeing rub marks at least on one = =20 >> other 4P at the inside of nose gear door =96 obviously it is pretty =20= >> tight there >> In the air intake for cylinder cooling to the right side of the =20 >> propeller. I made new baffling =96 it is really stiff =96 I wouldn=92t = =20 >> have any concern mounting the lights to it =96 is there any known =20 >> effect to the cooling? >> >> Ideas and thoughts are appreciated >> >> Ralf >> >> One more thing off the subject: when I google my name on the =20 >> internet I find tons of emails that I sent to the lml list because =20= >> they went through some kind of virus scanner. Since I used to put =20 >> my phone number and adress in my mails it just makes me feel a =20 >> little uncomfortable knowing that everybody in the world can read =20 >> my stupid questions to the lml list on the internet. > > > --Apple-Mail-1--471411582 Content-Type: text/html; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable I can confirm that the = cylindrical lights supplied by Lancair will not fit on the new strut. = The new strut is larger in diameter and the light sticks out below the = gear door plane. I mounted them on the intake pipes on the engine = thinking that the isolation of the hoses mounting the intake pipes plus = another rubber isolation below the light itself might allow them to = survive the vibration. We will see as the airplane should see first = flight in a couple of months.

Jack = Morgan



When I purchased my IV-P it had = the 2.2" cylindrical lights.  One on the nose wheel strut and one = on the co-pilot side intake.  It also had 2 HID lights in the = wingtips.  I've taken both cylindrical lights off.  Even for = taxi I found them less than what I felt I needed.  But to answer = your questions:

The mount on the strut was marginal.  It was = mounted using the same hose clamps as the firewall closeout = shield.  With the new style strut, I'm not sure where it would = fit.  Mine fell off when the mounting screws that held the = cylindrical case to the metal loop that the hose clamp passed through = backed out due to vibration.  I was not aware of any interference = with the nose gear or doors.  (No witness marks on the interior of = the doors.)  Photo is attached.

The mount for the light in = the intake port was very secure.  It was mounted on the = alternator.  Not sure if that was wise, but it seemed to work well = and did not require the wiring to flex with each take-off / landing = cycle.  The lamp was mounted on a piece of phenolic which was = mounted to ground studs on the alternator.  I had no cooling = problems (related to that.)  You should have a port in the baffling = in front of the #5 cylinder.  Photo attached.

I have = replaced that light with a MicroSun LED landing light which I use as a = taxi light.  It would be OK for a landing light, if I didn't = already have the HIDs in the wingtips.  If you would like a photo = of the MicroSun LED light, let me know.  The next time I am at the = hangar, I will take one.

Barry Knotts
Lancair IV-P = N4XE
Conti TSIO-550

Dear = subscribers,
I had = to remove my landing light from my lower cowl due to an interference = with my baffling/cool air duct for the = cabin.
I now = bought the 2 halogen lights from = Lancair.
  • On the nose wheel strut =96 I recall seeing rub = marks at least on one other 4P at the inside of nose gear door =96 = obviously it is pretty tight there
  • In the air intake for = cylinder cooling to the right side of the propeller. I made new baffling = =96 it is really stiff =96 I wouldn=92t have any concern mounting the = lights to it =96 is there any known effect to the = cooling?
    • Ideas = and thoughts are appreciated
     
    Ralf
     
    One more thing off the subject: when I google my = name on the internet I find tons of emails that I sent to the lml list = because they went through some kind of virus scanner. Since I used to = put my phone number and adress in my mails it just makes me feel a = little uncomfortable knowing that everybody in the world can read my = stupid questions to the lml list on the = internet.

    <L= amp in cooling port.jpg><Lamp on nose = gear.jpg>


    = --Apple-Mail-1--471411582--