Unfortunately, with that bulb I expect you will be disappointed. It is only 600 lumens and has a very wide beam at 30 degrees. The 4509 halogen bulb is about 5.5 degrees. I have been developing an LED landing light for several years and have done a ton of testing. I just finished a prototype PCB yesterday for mine and I expect to have them built and for sale by Sun N Fun this year(yes, I know I have promised that the past two years, but really mean it now).
With a 30 degree beam you will have about 3.3 candella per lumen at beam center so a max of about 1980 candella. I am using about 3680 lumens with a much tighter beam that gives me about 37.3 candela per lumen so my beam center is around 137,000 candella or about 70 times brighter. I don't have my 4509 halogen bulb measurements handy, but I am now about 1.5 times as bright as the halogen and mine uses about 35W of power. I will have the rectangular 8 LED light out first then I will finish the 7 LED 4509 round replacement. I have attached a picture of the lens array and PCB. Hopefully it will come through. -------- Original Message -------- Subject: Re: KR> Led landing light From: Jeff Scott via KRnet <krnet at list.krnet.org> List-Post: krnet@list.krnet.org Date: Thu, January 22, 2015 12:52 pm To: krnet at list.krnet.org I bought part # AR111-CW9W-30 from SuperbirghtLEDs.com. This is a drop in replacement for GE-4509 100W landing lights I used in my KR and SuperCub. Both planes had the landing lights mounted with this kit from Aircraft Spruce: 11-08000 LEADING EDGE LANDING LIGHT KIT. Just removed the 100W lights and installed the 11W LED lights in their place. Haven't flown them at night yet, but they seem a bit more intense as recognition lights with the wigwag. These lights are available in both cool white and warm white colors. For the last 18 years I have always smelled hot plastic when the landing lights were on; even on as wigwags. I've never been able to determine whether I was smelling hot wiring or hot plexiglass lenses and have never found any heat damage to the wiring or landing light covers. But regardless, I don't like smelling hot anything while in the air. Additionally, with a generator rather than an alternator, my battery was usually pretty well depleted by the time I got to the ground after throttling back on approach, so I often times ended up landing with very little light from the landing lights. The low draw (11W) LEDs should address both issues, which is why I changed them out. My SuperCub has a 60 Amp alternator, so the draw of the landing lights isn't really noticeable. I don't have plans to change out the landing lights on it any time soon unless I find that I really like the lighting on the KR when I get around to testing it at night. -Jeff Scott Los Alamos, NM > > What part number did you order and what kind of back do you need to hold > that light _______________________________________________ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options -------------- next part -------------- A non-text attachment was scrubbed... Name: landing light.jpg Type: image/jpeg Size: 74806 bytes Desc: not available URL: <http://list.krnet.org/mailman/private/krnet_list.krnet.org/attachments/20150124/aa736897/attachment.jpg>
