---------------------------------------------------------- Zenith601-List Digest Archive --- Total Messages Posted Wed 01/13/10: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:46 AM - Re: LED Landing lights (Joe) 2. 10:58 AM - Re: Re: LED Landing lights (Stephen R. Look) 3. 11:22 AM - Re: Re: LED Landing lights (Paul Mulwitz) 4. 11:40 AM - Re: Re: LED Landing lights (Rick Lindstrom) ________________________________ Message 1 _____________________________________ Time: 08:46:34 AM PST US From: "Joe" Subject: Zenith601-List: Re: LED Landing lights If you are looking for LED strobes, go to E-bay and type in "LED Strobe". You won't believe the selection to choose from! Does anyone know how you can make a plastic teardrop lens? What are the regs for strobe placement, visibility, etc? This was something I wanted to play with but I'm not that far along with the project yet. The one I like the best is Ebay# 180454805251 Joe in Oshkosh ________________________________ Message 2 _____________________________________ Time: 10:58:32 AM PST US From: "Stephen R. Look" Subject: Re: Zenith601-List: Re: LED Landing lights After looking at vacu-forming and other stuff, I decided I would just make a teardrop mold and encapsulate the whole deal including some mounting studs in clear Castolite. That gets you away from making lens and bezels. It makes for an unserviceable unit but it should last practically forever. Haven't done this yet but that's the current plan anyway. Steve At 10:46 AM 1/13/2010, you wrote: > >Does anyone know how you can make a plastic teardrop lens? Steve Look Monticello, IL www.ilrt66.com "Dogs have owners, Cats have staff" ________________________________ Message 3 _____________________________________ Time: 11:22:07 AM PST US From: "Paul Mulwitz" Subject: RE: Zenith601-List: Re: LED Landing lights Hi Steve, I've been trying to stay out of this line of conversation, but I feel I must make a comment on your idea of potting the whole light assembly. If you do that, you might run into serious problems with heat build-up. While LEDs are very efficient compared to incandescent bulbs, they still are not 100 percent efficient and will generate heat. This problem gets worse since the light outputs you need are incredibly high to meet the FAA requirements - at least in the case of collision avoidance. This problem will be naturally less if you have your light fixture filled with air and vented rather than a solid structure. I think you will find vacuum forming of a plastic lens an easy process. You just have to heat the plastic enough so it sags and then form it against the properly shaped mold. The required temperatures are pretty low - achievable in a kitchen oven. Good luck, Paul XL awaiting upgrade kit (retired electrical engineer) -----Original Message----- From: owner-zenith601-list-server@matronics.com [mailto:owner-zenith601-list-server@matronics.com] On Behalf Of Stephen R. Look Sent: Wednesday, January 13, 2010 10:56 AM Subject: Re: Zenith601-List: Re: LED Landing lights After looking at vacu-forming and other stuff, I decided I would just make a teardrop mold and encapsulate the whole deal including some mounting studs in clear Castolite. That gets you away from making lens and bezels. It makes for an unserviceable unit but it should last practically forever. Haven't done this yet but that's the current plan anyway. Steve At 10:46 AM 1/13/2010, you wrote: > >Does anyone know how you can make a plastic teardrop lens? Steve Look Monticello, IL www.ilrt66.com "Dogs have owners, Cats have staff" ________________________________ Message 4 _____________________________________ Time: 11:40:47 AM PST US From: Rick Lindstrom Subject: Re: Zenith601-List: Re: LED Landing lights Hi, Steve! I've been following this thread with some interest, as I've been active in the high-intensity LED based position light, strobe, and landing light market in the last few years. One of the issues with any kind of atmosphere captured inside an LED unit outer lens is the propensity for condensation. If you looked at some of the units mounted on wingtips at the Glasair outdoor display area at OSH this last year, there was a fair amount of water at each end of the lens. And moisture and electronics don't mix too well. What you're describing, potting the components and circuitry in clear plastic is spot on, and is what Aveo Engineering has been doing from the outset with their units. You might want to go look at their website before recreating the wheel and doing it yourself. Just a friendly suggestion! Rick Lindstrom First Light Aviation Group Livermore, CA -----Original Message----- >From: "Stephen R. Look" >Sent: Jan 13, 2010 1:56 PM >To: zenith601-list@matronics.com >Subject: Re: Zenith601-List: Re: LED Landing lights > > >After looking at vacu-forming and other stuff, I decided I would just >make a teardrop mold and encapsulate the whole deal including some >mounting studs in clear Castolite. >That gets you away from making lens and bezels. It makes for an >unserviceable unit but it should last practically forever. Haven't >done this yet but that's the current plan anyway. > >Steve > >At 10:46 AM 1/13/2010, you wrote: >> >>Does anyone know how you can make a plastic teardrop lens? > >Steve Look >Monticello, IL >www.ilrt66.com >"Dogs have owners, Cats have staff" > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith601-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith601-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/zenith601-list Browse Digests http://www.matronics.com/digest/zenith601-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.