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uuccio(at)gmail.com
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 Posted: Mon Dec 16, 2013 9:21 am Post subject: Landing light LEDs - questions about Heat Sink and Flasher/W |
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http://www.europaowners.org/main.php?g2_itemId=30987
Thanks Ron for that!
A couple of questions:
Heat sink: you mention it would need 60 sq. inches of heat sink. How did you come to this number? Does it assume that the sink sits in a free stream of oncoming air (I’m thinking that my heat sink would end up under the cowl which may not be the optimal place for it, so it would need to be even bigger, which would defeat the purpose of choosing the LED in the first place).
Wig-Wag/Flasher: I’m planning to have just one landing light (no taxi light) so more than a wig-wag, I really need a flasher of sorts. I’m considering three alternatives right now (I originally thought of the B&C SSF-1 wig-wag but doesn’t work unless two loads are attached):
<![if !supportLists]>- <![endif]>$6.99 An automotive flasher such as http://www.ebay.com/itm/1x-3-Pin-CF13-Car-Flasher-Relay-to-Fix-LED-Light-Blink-Flash-/251289748449 which I suspect may be noisy. Does anyone know for sure? Is there an inexpensive way to cure this?
<![if !supportLists]>- <![endif]>$45: Kuntzelman wig-wag controller which is capable of flashing one or two LEDs.
<![if !supportLists]>- <![endif]>$88: Perihelion wig-wag… I understand this is not noisy, but probably overkill (it apparently can flash two 250W sources, my LED consumes 20W).
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of rparigor(at)suffolk.lib.ny.us
Sent: Monday, 16 December, 2013 17:17
To: AeroelectricList
Subject: Re: Kuntzelman landing taxi recognition LEDs
Hi Sacha
"They co$t a bit so it would be nice to hear if someone has been using them before I buy one."
I purchased one and also an AeroSun. Not flying with them yet but did comment and document performance against several other lights:
Ron Parigoris
0123456789012345678
[quote][b]
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uuccio(at)gmail.com
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| Posted: Mon Dec 16, 2013 9:34 am Post subject: Landing light LEDs - questions about Heat Sink and Flasher/W |
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[quote]Just realized that for $55, there is also the open-source AEC9012-1 from Bob’s website which can flash a single LEDhttp://www.aeroelectric.com/Catalog/AEC/9012/IM9012-700C.pdf [b]
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uuccio(at)gmail.com
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| Posted: Tue Dec 17, 2013 10:27 pm Post subject: Landing light LEDs - questions about Heat Sink and Flasher/W |
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I ended up choosing the Kuntzelmans; asked and got a deal with free shipping and their wigwag controller + DPDT switch thrown in.
I'll try and do a similar test to yours comparing them to the headlights on my car using a camera with the same aperture/speed settings and post some (visual) results.
On Dec 17, 2013, at 21:07, bob noffs <icubob(at)gmail.com> wrote:
| Quote: | Just keep in mind that the D2 is 10 watts, a little less than Kuntzelmans. I didn't think the Kuntzleman was a great landing light, probably OK for taxi. Kuntzelman is 12 degree and D2 can be 10 though. I Another thing to consider is if the D2 makes any sort of undesirable noise
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