X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 13 May 2010 05:35:46 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-spurfowl.atl.sa.earthlink.net ([209.86.89.66] verified) by logan.com (CommuniGate Pro SMTP 5.3.7) with ESMTP id 4312665 for lml@lancaironline.net; Wed, 12 May 2010 22:43:57 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.66; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=cbtxIK/9VOJm1FoE0Mg6TJDP3DRbJmdsDkJkYWVoG2CwvsR9oSJDv4rOSA4DYzXf; h=Received:From:Mime-Version:Content-Type:Subject:Date:In-Reply-To:To:References:Message-Id:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [216.57.118.166] (helo=[192.168.1.105]) by elasmtp-spurfowl.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1OCOOP-0008Ti-Pl for lml@lancaironline.net; Wed, 12 May 2010 22:43:22 -0400 From: Colyn Case Mime-Version: 1.0 (Apple Message framework v1078) Content-Type: multipart/alternative; boundary=Apple-Mail-28--941342891 Subject: Re: [LML] Re: landing light 4P X-Original-Date: Wed, 12 May 2010 22:43:20 -0400 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: <26558CA2-7848-4DD7-955A-85B20526355E@earthlink.net> X-Mailer: Apple Mail (2.1078) X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da9403feed55b0098f86538e5db2a832fc15c350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 216.57.118.166 --Apple-Mail-28--941342891 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 fwiw it is possible to grind Tim's (Lancair) mr16 lightholders so that = you can put two side by side. They still don't do a lot unless you get the 100W bulbs. ...but it is nice to have some light right in the center. It is really hard to beat having a big parabolic reflector. I think = if you put Art's idea with a ?3.5" parabolic HID right in the right = intake that is the best bang for the buck. On Apr 25, 2010, at 3:21 AM, Jack Morgan wrote: > 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. >=20 > Jack Morgan >=20 >> 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 >>=20 >>=20 >> 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: >>=20 >> 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. >>=20 >> 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. >>=20 >> 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. >>=20 >> Barry Knotts >> Lancair IV-P N4XE >> Conti TSIO-550 >>=20 >> bronnenmeier@GROBSYSTEMS.COMwrote: >>>=20 >>> Dear subscribers, >>> =20 >>> I had to remove my landing light from my lower cowl due to an = interference with my baffling/cool air duct for the cabin. >>> =20 >>> I now bought the 2 halogen lights from Lancair. >>> =20 >>> 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 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? >>> =20 >>> Ideas and thoughts are appreciated >>> =20 >>> Ralf >>> =20 >>> 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. >>=20 >> >>=20 >=20 --Apple-Mail-28--941342891 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 fwiw = it is possible to grind Tim's (Lancair) mr16 lightholders so that you = can put two side by side.
They still don't do a lot unless you get = the 100W bulbs.
...but it is nice to have some light right in = the center.

It is really hard to beat having a = big parabolic reflector.     I think if you put Art's idea = with a ?3.5" parabolic HID right in the right intake that is the best = bang for the buck.

On Apr 25, 2010, at 3:21 AM, = Jack Morgan wrote:

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-28--941342891--