Date: Tue, 20 Feb 96 09:51:40 est From: "Larry Schuler" Subject: Landing Light(s) I saw an MKIII at Oshkosh last summer with landing lights in the strakes. Looked real nice and I took a couple of pictures. I wonder about the heat that halogens put out. Any danger in melting foam? Any input would be appreciated. Larry From: Marc Zeitlin Date: Tue, 20 Feb 96 12:12:32 EST Subject: Re: Landing Light(s) Larry Schuler writes: > I saw an MKIII at Oshkosh last summer with landing lights in the strakes. Numerous people at Oshkosh (although for the life of me I can't remember who) mentioned that the strakes aren't a good place for the LL's, as they will create a lot of glare off of the canard which will go right into the pilot's eyes. I hadn't thought of that, and I had planned on putting the lights in the strakes until I heard it. So, now the nose. > I wonder about the heat that halogens put out. Any danger in > melting foam? Bill Walsh addressed this issue in his last posting regarding landing lights in the nose - looks like with a bit of forethought it wouldn't be a problem, as he couldn't get the temperature over 120 degrees Farenheit anyway. So, 50 degrees above ambient shouldn't ever be a problem, as long as it's not in a structural glass area. -- Marc J. Zeitlin Email: marcz@an.hp.com Date: Tue, 20 Feb 96 13:23:59 EST From: "Wilhelmson, Jack" Subject: Re[2]: Landing Light(s) Marc: The landing light installation in my COZY III is per plans except for the fact that I used a rectangular halogen with a polycarbonate enclosure. One of the features of this installation I really like is the fact that I can adjust the aiming of the landing light during touchdown and during taxi. Most fixed landing lights are not any good during the flair to landing because they are pointing at the sky, or they are no good during approach to landing and during taxi because they are pointing too much down. The adjustable feature cures this problem and the adjustment control is right next to the throttle which is top priority of course. I didn't realize how useful this would be until I used it a few times. I hope this does not throw cold water on your plans, but I thought I would share my experience with you. It's worth what it cost anyway. ______________________________ Reply Separator _________________________________ Subject: Re: Landing Light(s) Author: Marc Zeitlin at internet_gateway Date: 2/20/96 12:12 PM Larry Schuler writes: > I saw an MKIII at Oshkosh last summer with landing lights in the strakes. Numerous people at Oshkosh (although for the life of me I can't remember who) mentioned that the strakes aren't a good place for the LL's, as they will create a lot of glare off of the canard which will go right into the pilot's eyes. I hadn't thought of that, and I had planned on putting the lights in the strakes until I heard it. So, now the nose. > I wonder about the heat that halogens put out. Any danger in > melting foam? Bill Walsh addressed this issue in his last posting regarding landing lights in the nose - looks like with a bit of forethought it wouldn't be a problem, as he couldn't get the temperature over 120 degrees Farenheit anyway. So, 50 degrees above ambient shouldn't ever be a problem, as long as it's not in a structural glass area. -- Marc J. Zeitlin Email: marcz@an.hp.com From: Marc J. Zeitlin Subject: Re[2]: Landing Light(s) Date: Tue, 20 Feb 96 15:27:26 EST Jack Wilhelmson wrote (in email to me): >The landing light installation in my COZY III is per plans except for the fact >that I used a rectangular halogen with a polycarbonate enclosure. One of the >features of this installation I really like is the fact that I can adjust the >aiming of the landing light during touchdown and during taxi. Most fixed landing >lights are not any good during the flair to landing because they are pointing at >the sky, or they are no good during approach to landing and during taxi because >they are pointing too much down. The adjustable feature cures this problem and >the adjustment control is right next to the throttle which is top priority of >course. I didn't realize how useful this would be until I used it a few times. I >hope this does not throw cold water on your plans, but I thought I would share >my experience with you. It's worth what it cost anyway. This is a very good point, but I think I can address it with the fact that I'm going to have two landing lights in the nose. I can adjust them so that one will be useful during approach and on the ground, and one will be useful during flare. The mounting brackets make it trivial to adjust, and actually, one could install a push-pull cable to adjust it during flight. It also occurred to me to use a flasher circuit to alternate flashing them for visibility - there was an article in SA or Kitplanes within the past year or two about this, with a circuit diagram. -- Marc J. Zeitlin Email: marcz@an.hp.com From: "Howard Bernstein" Date: Tue, 20 Feb 1996 15:44:47 -0500 Subject: Re: Re[2]: Landing Light(s) > It also occurred to me to use a flasher circuit to alternate flashing > them for visibility - there was an article in SA or Kitplanes within the > past year or two about this, with a circuit diagram. This was the first thing I thought of... I wonder if you need "both off" time between the alternate flashing to make them as distinguishable as a single flashing landing light. > > -- > Marc J. Zeitlin Email: marcz@an.hp.com >-- End of excerpt from Marc J. Zeitlin -- Howard Bernstein - Atria Software, Inc. (howie@atria.com) 20 Maguire Road, Lexington, Massachusetts 02173-3104 (617) 676-2607 [direct], -2400 [main], -2600 [fax] Date: Tue, 20 Feb 1996 22:12:48 -0500 (EST) From: Bill Walsh Subject: Re: Landing Light(s) On Tue, 20 Feb 1996, Larry Schuler wrote: > > I saw an MKIII at Oshkosh last summer with landing lights in the strakes. > > Looked real nice and I took a couple of pictures. > > I wonder about the heat that halogens put out. Any danger in melting foam? > > Any input would be appreciated. > > Larry > Larry, I know that Vance Adkinson has this on his plane. He would send you the information on it. There is a hollow part in the strake where this can be positioned. A compartment has to be made and, I believe Vance put a heat shield on the inside of it. Bill W From: Sid & Mari Lloyd Subject: RE: Landing Light(s) Date: Wed, 21 Feb 1996 05:38:40 -0600 ---------- From: Bill Walsh[SMTP:walsh@seminole.iag.net] Sent: Tuesday, February 20, 1996 4:12 PM To: Larry Schuler Cc: cozy_builders@hpwarhw.an.hp.com Subject: Re: Landing Light(s) On Tue, 20 Feb 1996, Larry Schuler wrote: > > I saw an MKIII at Oshkosh last summer with landing lights in the strakes. > > Looked real nice and I took a couple of pictures. > > I wonder about the heat that halogens put out. Any danger in melting foam? > > Any input would be appreciated. > > Larry > I saw one that had a small NACA scoop to keep it cool in there. Sid Lloyd Date: Wed, 21 Feb 1996 11:29:00 -0500 From: Dick.Finn@FNB.sprint.com Subject: Re[2]: Landing Light(s) On Tue, 20 Feb 1996, Larry Schuler wrote: > > I saw an MKIII at Oshkosh last summer with landing lights in the strakes . > > Looked real nice and I took a couple of pictures. > > I wonder about the heat that halogens put out. Any danger in melting fo am? > > Any input would be appreciated. > > Larry Carl Denks in Ohio has a real nice Cozy Classic with the landing light in the nose. I talked with him several times and seriously considered installing mine there. I actually took a pass on it and have decided to install mine in the strakes when I get to that point. The biggest issue in my mind was the difficulty of formining a conical piece of plexiglass for the cover. As a side issue, in a gear up landing you could end up with a much more costly (time and materials) repair with a nose mounted light. My $.02. Dick Finn Cozy Mark IV #46 Date: Sat, 15 Jun 1996 21:35:40 -0400 From: CozyBldr@aol.com Subject: COZY:Landing Light Angles I hope someone might be able to help. I'm working on my landing light and it would help a great deal if someone knew what the approximate angles the light should be set to in both taxi and landing configurations. Let's go on the premise that aiming the light straight ahead (parallel to the longerons) is zero degrees. Thanks. Paul Stowitts Cozy Mark IV #200 Date: Wed, 4 Dec 1996 13:39:04 -0500 From: "David R. Kuechenmeister" Subject: COZY: Landing Light Locations I have noticed a couple of Long-EZs around with a landing light installed in the ouboard fuel strake. The location appeals to me since it is a lot more aerodynamic than the bottom mounted swing out light. Plus, there is one less do-dad in the cockpit to fool with. Are there any strong opinions about the location. I remember reading that RAF was worried about the heat produced by the light bulb. I don't see how any fuel and heat are going to mix in that location. Originally, I thought about using a halogen bulb, but to hedge my bets, I wonder if incandescent bulbs are any cooler. The real heat problem might not be with fuel, but with the lexan covering. In T-34s, we weren't supposed to use the landing lights except when flying, since the plexiglass would warp if the air wasn't cooling it. Thanks for any advice. Dave -- David R. Kuechenmeister Long-EZ #779 (770)528-7738 Atlanta, Georgia Date: Wed, 4 Dec 1996 13:56:24 -0600 (CST) From: csmith@siue.edu (Curt Smith) Subject: Re: COZY: Landing Light Locations >I have noticed a couple of Long-EZs around with a landing light installed >in the ouboard fuel strake. The location appeals to me since it is a lot >more aerodynamic than the bottom mounted swing out light. Plus, there is >one less do-dad in the cockpit to fool with. > >Are there any strong opinions about the location. I remember reading that >RAF was worried about the heat produced by the light bulb. I don't see how >any fuel and heat are going to mix in that location. > >Originally, I thought about using a halogen bulb, but to hedge my bets, I >wonder if incandescent bulbs are any cooler. The real heat problem might >not be with fuel, but with the lexan covering. In T-34s, we weren't >supposed to use the landing lights except when flying, since the plexiglass >would warp if the air wasn't cooling it. > >Thanks for any advice. > >Dave > >-- > >David R. Kuechenmeister Long-EZ #779 > >(770)528-7738 >Atlanta, Georgia > > > Dave, I, too explored a number of options for landing light location (strakes, an appendage to the front gear, nose, etc.) and came to the conclusion that the plans location was best because it allowed adjustment of the beam for both landing, take-off, and taxi purposes. In our airplanes, deck angle on approach dictates a light beam angle different (probably lower) than for taxi and take-off roll. Everyone I talked to agreed that an adjustable beam angle is very desireable, so I went with the plans location. Suit yourself, though. Curt Smith Date: Wed, 4 Dec 1996 15:01:28 -0500 From: Phillip.Johnson@kan.lmcda.lmco.com (phillip johnson) Subject: Re: COZY: Landing Light Locations The landing light in the outboard fuel strake is reputed to illuminate the canard which is distracting to the pilot at night. Various attempts have been made to shield the light to prevent this but in general they have not been successful. Phillip Johnson ______________________________ Reply Separator _________________________________ Subject: COZY: Landing Light Locations Author: "David R. Kuechenmeister" at smtp_gway Date: 12/4/96 1:39 PM I have noticed a couple of Long-EZs around with a landing light installed in the ouboard fuel strake. The location appeals to me since it is a lot more aerodynamic than the bottom mounted swing out light. Plus, there is one less do-dad in the cockpit to fool with. Are there any strong opinions about the location. I remember reading that RAF was worried about the heat produced by the light bulb. I don't see how any fuel and heat are going to mix in that location. Originally, I thought about using a halogen bulb, but to hedge my bets, I wonder if incandescent bulbs are any cooler. The real heat problem might not be with fuel, but with the lexan covering. In T-34s, we weren't supposed to use the landing lights except when flying, since the plexiglass would warp if the air wasn't cooling it. Thanks for any advice. Dave -- David R. Kuechenmeister Long-EZ #779 (770)528-7738 Atlanta, Georgia From: Marc J. Zeitlin Subject: Re: COZY: Landing Light Locations (fwd) Date: Wed, 4 Dec 96 15:17:13 EST Curt Smith wrote: >...... came to the conclusion that the >plans location was best because it allowed adjustment of the beam for both >landing, take-off, and taxi purposes. In our airplanes, deck angle on >approach dictates a light beam angle different (probably lower) than for >taxi and take-off roll. This is a good point, and one which I addressed in the nose installation by having two lamps. One will be adjusted for on-ground use, and one for approach. It is not, however, in-flight-adjustable like the plans version, but I wanted to get rid of handles, moving parts, and something else to think about on approach. -- Marc J. Zeitlin Email: marcz@an.hp.com