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Speedy11(at)aol.com
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 Posted: Thu Oct 08, 2009 5:52 pm Post subject: Wig-Wagging LED lamps |
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Ralph,
I can assure you they do very well!
I have the Precise Flight HIDs (non-pulsing for the reasons listed by "dblumel") and Whelen LED "landing lights" for taxi and recognition. LEDs, including Whelens, are not yet suitable as landing lights, but they are superb as taxi and recognition lights.
I have both HID and LED lights in my wingtips and they are super. Precise Flight is coming out with 50W and 70W HID units - I have the 35W.
You can see them on my web site at http://www.rv-8a.net/2008.htm - scroll down to September.
Regards,
Stan Sutterfield
| Quote: | >LED still has a long way to go to compete with HID as a landing light.
| Quote: | This is true in terms of total lumens and reach (distance).
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Yes, but I wonder, how do the LEDs do as a recognition light, compared to a
landing light?
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[quote][b]
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XeVision
Joined: 07 Oct 2009
Posts: 26
Location: Ogden, Utah
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| Posted: Fri Oct 09, 2009 9:50 am Post subject: Re: Wig-Wagging LED lamps |
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[quote="Speedy11(at)aol.com"]Ralph,
I can assure you they do very well!
I have the Precise Flight HIDs (non-pulsing for the reasons listed by "dblumel") and Whelen LED "landing lights" for taxi and recognition. LEDs, including Whelens, are not yet suitable as landing lights, but they are superb as taxi and recognition lights.
I have both HID and LED lights in my wingtips and they are super.� Precise Flight is coming out with 50W and 70W HID units - I have the 35W.
XeVision developed and made available 50 watt HID in early 2005 and 75 watt HID about 2 years ago for special applications.
Both the 50 and 75 watt HID from XeVision are used in the Eurocopter line of Helicopters within their TC and as an upgrade.
Note: the industry std. is to rate this HID technology based on Watts output (to the bulb), not using input to the ballasts as the rating. This is a common problem with Asian made HID products and their wattage ratings.
The ONLY quality HID bulbs in the 35-75 watt range are made in Europe. The Asians including Korea are a long way from matching the QC, life and performance provided by Philips, Osram (Sylvania) and GE HID bulbs.
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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_________________
LED still has a long way to go to compete with HID as a landing light. This is true in terms of total lumens and reach (distance). |
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rgf(at)dcn.org
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| Posted: Fri Oct 09, 2009 10:44 am Post subject: Wig-Wagging LED lamps |
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Well, my question is: are there LED lamps that are cheap enough and bright
enough now to serve as daytime recognition lamps? You all have fairly
convinced me not to wig-wag the HID lamp I am installing, but I'd still like
to wig-wag some sort of bright light.
Notes:
"Cheap", let's say $50 dollars for each LED assy so $100 total (both wings).
"Bright", let's say easily noticed wig-wagging from at least 2-3 miles away,
within a 20-30 deg angle from head-on.
Ralph Finch
Davis, California
RV-9A QB-SA
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XeVision
Joined: 07 Oct 2009
Posts: 26
Location: Ogden, Utah
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| Posted: Fri Oct 09, 2009 11:36 am Post subject: Re: Wig-Wagging LED lamps |
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| rgf(at)dcn.org wrote: | Well, my question is: are there LED lamps that are cheap enough and bright
enough now to serve as daytime recognition lamps? You all have fairly
convinced me not to wig-wag the HID lamp I am installing, but I'd still like
to wig-wag some sort of bright light.
Notes:
"Cheap", let's say $50 dollars for each LED assy so $100 total (both wings).
"Bright", let's say easily noticed wig-wagging from at least 2-3 miles away,
within a 20-30 deg angle from head-on.
Ralph Finch
Davis, California
RV-9A QB-SA |
For Daytime use I'd say no to that distance and angle requirement. For nighttime effectiveness yes. But at that price point absolutely not. High Power LED emitters to even start to accomplish your goal do not come cheap. High Power LED's are relatively expensive.
Audi is charging a $5000 option for a new model with all LED front end. They (Audi) will also use fans to manage the heat (back end) for the LED headlight portion. Low and High beam. Audi V8 R8 2010
The primary reason AUDI is using LED is for front end design "artistic freedom", not as a performance improvement over HID.
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_________________
LED still has a long way to go to compete with HID as a landing light. This is true in terms of total lumens and reach (distance). |
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Speedy11(at)aol.com
Guest
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| Posted: Tue Oct 13, 2009 11:26 am Post subject: Wig-Wagging LED lamps |
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My apology, Mr/Ms/Mrs dblumel. I meant no offense to XeVision. You make an excellent product. In fact, I likely would have bought it at Sun n Fun several years ago except that the guy working your booth was quite rude. So, I went to the Precise Flight booth and found an opposite response. I bought their product.
I don't know where Precise Flight buys their bulbs, but I do know they work very well for my application (RV-8A). I do plan to upgrade to the 50 or 70W version. I do not work for Precise Flight nor have any working or financial relationship with them.
My LED recognition lights can easily be seen 5 miles away, but they are very directional. At that distance they have to pointed at you to be seen. Within 1 mile, they can be seen about 30-40 degrees off center. If one designs reflective material into the lamp assembly, the angle-off visibility improves.
Stan Sutterfield
| Quote: | XeVision developed and made available 50 watt HID in early 2005 and 75 watt HID
about 2 years ago for special applications.
Both the 50 and 75 watt HID from XeVision are used in the Eurocopter line of Helicopters
within their TC and as an upgrade.
Note: the industry std. is to rate this HID technology based on Watts output (to
the bulb), not using input to the ballasts as the rating. This is a common problem
with Asian made HID products and their wattage ratings.
The ONLY quality HID bulbs in the 35-75 watt range are made in Europe. The Asians
including Korea are a long way from matching the QC, life and performance provided
by Philips, Osram (Sylvania) and GE HID bulbs.
|
[quote][b]
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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Speedy11(at)aol.com
Guest
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| Posted: Tue Oct 13, 2009 11:43 am Post subject: Wig-Wagging LED lamps |
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In a word - no.
LEDs are still relatively expensive - especially when the word airplane is associated with it.
I was able to accomplish what you described, but at a cost of $600+ Prices are dropping, but not rapidly.
However, consider using 12v MR-16 bulbs. They are lightweight, cheap, bright, easy to install, and readily available. The major drawback is heat. They get VERY hot. You would need to ventilate them. They get much hotter than LEDs, which themselves must be use heat sinks.
There are many types or MR-16s - some with IR lenses, some without, some that let the IR out thru the reflector, some that send all IR out the front, some that are blue tinted to give a blue light, 50w, 35w, 75w, spot, flood, wide ... lots of variables.
Before buying the LEDs, I had settled on the 65W, 12 degree spot MR-16 bulb with a plan to add a 12v computer fan to help cool it.
Stan Sutterfield
| Quote: | "Cheap", let's say $50 dollars for each LED assy so $100 total (both wings).
"Bright", let's say easily noticed wig-wagging from at least 2-3 miles away,
within a 20-30 deg angle from head-on.
Ralph Finch
Davis, California
RV-9A QB-SA |
[quote][b]
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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XeVision
Joined: 07 Oct 2009
Posts: 26
Location: Ogden, Utah
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| Posted: Tue Oct 13, 2009 12:37 pm Post subject: Re: Wig-Wagging LED lamps |
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Stan, my name is Dan (Male).
Your comment is rather "interesting" in light of the fact that we have NEVER had a booth at Sun N Fun, in fact we (nor I or any employee) have never even attended Sun N Fun. So I am not sure how we could have been rude to you or anyone else at "our booth".
Precise Fight uses Osram (Sylvania) brand D1S HID bulbs for their 35 watt applications. This bulb is made in Germany.
Dan
[quote="Speedy11(at)aol.com"]My apology, Mr/Ms/Mrs dblumel. I meant no offense to XeVision.� You make an excellent product. In fact, I likely would have bought it at Sun n Fun several years ago except that the guy working your booth was quite rude. So, I went to the Precise Flight booth and found an opposite response. I bought their product.
I don't know where Precise Flight buys their bulbs, but I do know they work very well for my application (RV-8A). I do plan to upgrade to the 50 or 70W version. I do not work for Precise Flight nor have any working or financial relationship with them.
Stan Sutterfield
| Quote: | XeVision developed and made available 50 watt HID in early 2005 and 75 watt HID
about 2 years ago for special applications.
Both the 50 and 75 watt HID from XeVision are used in the Eurocopter line of Helicopters
within their TC and as an upgrade.
Note: the industry std. is to rate this HID technology based on Watts output (to
the bulb), not using input to the ballasts as the rating. This is a common problem
with Asian made HID products and their wattage ratings.
The ONLY quality HID bulbs in the 35-75 watt range are made in Europe. The Asians
including Korea are a long way from matching the QC, life and performance provided
by Philips, Osram (Sylvania) and GE HID bulbs.
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
|
_________________
LED still has a long way to go to compete with HID as a landing light. This is true in terms of total lumens and reach (distance). |
|
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