Today's Message Index:
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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
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| Subject: | 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
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| Subject: | 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
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| Subject: | 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
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| Subject: | 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" <slook@mchsi.com>
>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"
>
>
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