 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
robin1(at)mrmoisture.com
Guest
|
 Posted: Tue Aug 25, 2009 9:52 pm Post subject: Big Iron Envy |
 |
|
RV-List,
In the past I have mentioned that a number of pilots have said how bright & noticeable my Dual Wig Wag HID lights are from the ground when I am on approach during the daylight hours. This is exactly what I wanted from the first day I saw my neighbor’s Pilatus swoop into our home field with his flashing HID’s a blazing. I think the little boy inside of me said… “me want.”
Well yesterday on a dusk flight departing the LA basin ATC called traffic “South West 737 you have RV-10 Traffic 10 O’clock, 17 miles 8,500 feet. November 110EE traffic 2:00 O’clock descending out of one-one-thousand feet a Boeing 737.” Before I could respond the South West 737 replied Traffic Insight. Moments later the SW pilot told me through the controller “that is some light system he has on his RV-10, it’s really easy to pick up” COOL! Getting “at a boy’s” from commercial pilots.
I consider the Wig-Wag HID’s to be an important safety feature on my -10. Seeing is avoiding.
The set up is nothing out of the ordinary with the exception of dual 35W HID lights placed in the leading edge. If interested I have a page that shows the install. http://www.painttheweb.com/rv-10/Lights_LEDHID.htm . One more thing of note. When on that page you will also see some pretty expensive (but nice) LED Position Lights. My next build is an RV-8A and I have found a set of Red & Green LED bulbs for around $8.00 each including wired sockets (eBay). These appear to be an excellent and cost effective solution vs. the printed circuit board LED’s I used on my -10. Plus some significant time savings to install as well. I will report results once flying.
Not exactly the LED’s I purchased but this gives you an idea of the concept: eBay Item# 380151029392
Robin
RV-4 Sold
RV-6A Sold
RV-10 75 Hours
RV-8A Flying 2010
[quote][b]
| | - The Matronics RV10-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?RV10-List |
|
|
|
| Back to top |
|
 |
msausen
Joined: 25 Oct 2007
Posts: 559
Location: Appleton, WI USA
|
| Posted: Wed Aug 26, 2009 5:36 am Post subject: Big Iron Envy |
|
|
This is another great place to get LED replacement bulbs.
http://www.autolumination.com/
Michael
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Robin Marks
Sent: Wednesday, August 26, 2009 12:43 AM
To: rv10-list(at)matronics.com; rv-list(at)matronics.com
Subject: Big Iron Envy
RV-List,
In the past I have mentioned that a number of pilots have said how bright & noticeable my Dual Wig Wag HID lights are from the ground when I am on approach during the daylight hours. This is exactly what I wanted from the first day I saw my neighbor’s Pilatus swoop into our home field with his flashing HID’s a blazing. I think the little boy inside of me said… “me want.”
Well yesterday on a dusk flight departing the LA basin ATC called traffic “South West 737 you have RV-10 Traffic 10 O’clock, 17 miles 8,500 feet. November 110EE traffic 2:00 O’clock descending out of one-one-thousand feet a Boeing 737.” Before I could respond the South West 737 replied Traffic Insight. Moments later the SW pilot told me through the controller “that is some light system he has on his RV-10, it’s really easy to pick up” COOL! Getting “at a boy’s” from commercial pilots.
I consider the Wig-Wag HID’s to be an important safety feature on my -10. Seeing is avoiding.
The set up is nothing out of the ordinary with the exception of dual 35W HID lights placed in the leading edge. If interested I have a page that shows the install. http://www.painttheweb.com/rv-10/Lights_LEDHID.htm . One more thing of note. When on that page you will also see some pretty expensive (but nice) LED Position Lights. My next build is an RV-8A and I have found a set of Red & Green LED bulbs for around $8.00 each including wired sockets (eBay). These appear to be an excellent and cost effective solution vs. the printed circuit board LED’s I used on my -10. Plus some significant time savings to install as well. I will report results once flying.
Not exactly the LED’s I purchased but this gives you an idea of the concept: eBay Item# 380151029392
Robin
RV-4 Sold
RV-6A Sold
RV-10 75 Hours
RV-8A Flying 2010 | Quote: | | ; - The RV10-List Email Forhref="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.================[/b]< Same great content also available via the Web Forums![/b] |
href="http://forums.matronics.com">http://forums.matronics.comhttp://www.matronics.com/con[/b] [b]
| | - The Matronics RV10-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?RV10-List |
|
|
|
| Back to top |
|
|
rv10builder(at)verizon.ne
Guest
|
| Posted: Wed Aug 26, 2009 6:23 am Post subject: Big Iron Envy |
|
|
As far as LED's there is a nice way to do this, I think when I used all the LED's ( 8 in total) plexi, resistor and all it was about $80 for the two Nav lights.
from Pete on VAF- http://www.vansairforce.com/community/showthread.php?t=37018&highlight=led+nav+light instructions of how to do and some better pictures than I was able to take myself of my setup. Very bright!
As far those (like me) that just want to be seen without making a hole in the leading edge (which actually allows there to be light for the pilot to see) Here is an inexpensive option- David McNeill's plane is on the website to show the difference of the wing tip lights (stock Van's- vs Planelights) http://www.planelights.com/index.php?id=661
Pascal
From: Robin Marks (robin1(at)mrmoisture.com)
Sent: Tuesday, August 25, 2009 10:43 PM
To: rv10-list(at)matronics.com (rv10-list(at)matronics.com) ; rv-list(at)matronics.com (rv-list(at)matronics.com)
Subject: Big Iron Envy
RV-List,
In the past I have mentioned that a number of pilots have said how bright & noticeable my Dual Wig Wag HID lights are from the ground when I am on approach during the daylight hours. This is exactly what I wanted from the first day I saw my neighbors Pilatus swoop into our home field with his flashing HIDs a blazing. I think the little boy inside of me said me want.
Well yesterday on a dusk flight departing the LA basin ATC called traffic South West 737 you have RV-10 Traffic 10 Oclock, 17 miles 8,500 feet. November 110EE traffic 2:00 Oclock descending out of one-one-thousand feet a Boeing 737. Before I could respond the South West 737 replied Traffic Insight. Moments later the SW pilot told me through the controller that is some light system he has on his RV-10, its really easy to pick up COOL! Getting at a boys from commercial pilots.
I consider the Wig-Wag HIDs to be an important safety feature on my -10. Seeing is avoiding.
The set up is nothing out of the ordinary with the exception of dual 35W HID lights placed in the leading edge. If interested I have a page that shows the install. http://www.painttheweb.com/rv-10/Lights_LEDHID.htm . One more thing of note. When on that page you will also see some pretty expensive (but nice) LED Position Lights. My next build is an RV-8A and I have found a set of Red & Green LED bulbs for around $8.00 each including wired sockets (eBay). These appear to be an excellent and cost effective solution vs. the printed circuit board LEDs I used on my -10. Plus some significant time savings to install as well. I will report results once flying.
Not exactly the LEDs I purchased but this gives you an idea of the concept: eBay Item# 380151029392
Robin
RV-4 Sold
RV-6A Sold
RV-10 75 Hours
RV-8A Flying 2010
[quote]
title="http://www.matronics.com/Navigator?RV10-List
CTRL + Click to follow link" href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
[b]
| | - The Matronics RV10-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?RV10-List |
|
|
|
| Back to top |
|
|
dave.saylor.aircrafters(a
Guest
|
| Posted: Wed Aug 26, 2009 6:50 am Post subject: Big Iron Envy |
|
|
Robin,
Which Wig-Wag are you using? After I installed the Planelights HIDs in my wingtips, I was told by Eric Jones in no uncertain terms that HIDs would ruin the wig-wag he sells (from Perihelion Design). I had one of his WW switches installed, and it worked fine for the halogens. But it came out after the HIDs were installed, and I miss it!
How does your wig wag handle the warm-up period, or is there one?
I agree, the WW is a pretty significant safety improvement. Did I understand the jet saw you at 10+ miles? Wow!
Dave Saylor
AirCrafters LLC
140 Aviation Way
Watsonville, CA 95076
831-722-9141 Shop
831-750-0284 Cell
[quote][b]
| | - The Matronics RV10-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?RV10-List |
|
|
|
| Back to top |
|
|
msausen
Joined: 25 Oct 2007
Posts: 559
Location: Appleton, WI USA
|
| Posted: Wed Aug 26, 2009 7:44 am Post subject: Big Iron Envy |
|
|
The key with wig-wagging HID’s is that you have to give them a warm up period before they go to wig-wag mode or you will fry them. Most wig-wag setups for HID’s will turn them on for a minute or so before switching to that mode allowing them to fully warm up.
Michael
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Dave Saylor
Sent: Wednesday, August 26, 2009 9:48 AM
To: rv10-list(at)matronics.com
Subject: Re: Big Iron Envy
Robin,
Which Wig-Wag are you using? After I installed the Planelights HIDs in my wingtips, I was told by Eric Jones in no uncertain terms that HIDs would ruin the wig-wag he sells (from Perihelion Design). I had one of his WW switches installed, and it worked fine for the halogens. But it came out after the HIDs were installed, and I miss it!
How does your wig wag handle the warm-up period, or is there one?
I agree, the WW is a pretty significant safety improvement. Did I understand the jet saw you at 10+ miles? Wow!
Dave Saylor
AirCrafters LLC
140 Aviation Way
Watsonville, CA 95076
831-722-9141 Shop
831-750-0284 Cell | Quote: | | http://www.matronics.com/Navigator?RV10-List |
0123456789
[quote][b]
| | - The Matronics RV10-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?RV10-List |
|
|
|
| Back to top |
|
|
robin1(at)mrmoisture.com
Guest
|
| Posted: Wed Aug 26, 2009 8:11 am Post subject: Big Iron Envy |
|
|
At the time there were limited choices. There was someone selling a small module for something like $30 but I didn’t want to risk the expensive HID system on an unknown W/W module so I spent the extra $ and purchased the XePulse module http://www.xevision.com/hid_prices.html#pulsingprices $165 to $195. I understand from Duckworth that the MaxPulse Flasher is also a very nice unit (with warm up mode) for $140 http://www.duckworksav.com/WigWag.html but the MaxPulse may violate a XePulse patent so Duckworks has been forced to close out it’s inventory.
As I did not stay at a Holiday In Express last night PLEASE do the research to make sure any unit you purchase works with your manufacturers HID lights.
Robin
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Dave Saylor
Sent: Wednesday, August 26, 2009 7:48 AM
To: rv10-list(at)matronics.com
Subject: Re: Big Iron Envy
Robin,
Which Wig-Wag are you using? After I installed the Planelights HIDs in my wingtips, I was told by Eric Jones in no uncertain terms that HIDs would ruin the wig-wag he sells (from Perihelion Design). I had one of his WW switches installed, and it worked fine for the halogens. But it came out after the HIDs were installed, and I miss it!
How does your wig wag handle the warm-up period, or is there one?
I agree, the WW is a pretty significant safety improvement. Did I understand the jet saw you at 10+ miles? Wow!
Dave Saylor
AirCrafters LLC
140 Aviation Way
Watsonville, CA 95076
831-722-9141 Shop
831-750-0284 Cell | Quote: | | http://www.matronics.com/Navigator?RV10-List |
0123456789
[quote][b]
| | - The Matronics RV10-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?RV10-List |
|
|
|
| Back to top |
|
|
robin1(at)mrmoisture.com
Guest
|
| Posted: Thu Aug 27, 2009 6:42 am Post subject: Big Iron Envy |
|
|
Pat,
Not sure if you are asking me about “switching” or “wiring” but the wiring is straight forward as we followed the instructions included in the XePulse unit. As far as the switching goes my Landing Light switch is a 3 position Off, On, Wig/Wag. I set up my switches so that the four switches I want on for Take Off/Landing/Go Around are all together Fuel Pump/WigWag Landing Lights/ Strobe Lights/Position Lights. So my quick & simple Take Off and Landing double check is “All Forward” meaning Mixture & Prop and “All Up” meaning Boost Pump and Lights. For night Tale Off & Landings I move the WigWag lights to the middle position for solid light operation. One other note: my Gulfstream550/SW Airlines/Acrobatic Pilot/Instructor tells me that if I want to be “cool” I should taxi with landing lights full on to let them warm up (the XePulse controller warms them up for me) and then once I receive the “Cleared For Take Off” call I flip on the WigWag as a visual acknowledgement of the clearance. I only experience a 1-2% increase in personal coolness when I do this. Heck I already have an RV-10 how much cooler do I need to be?
[img]cid:image001.jpg(at)01CA26E5.9A602940[/img]
BTW I have the Landing Lights adjusted so my right light during ground operations projects out about ~1200 feet (these lights are very powerful) and my left landing light only about 100 feet. This makes the left landing project out ~1200 feet in the landing/flair configuration. Again these lights are so powerful that with our runway lights on full bright and short final I can light up the numbers & centerline and see the light patters oscillate and the plane makes small pitches & rolls adjustments on short final.
Robin
From: Patrick Pulis [mailto:rv10free2fly(at)yahoo.com.au]
Sent: Thursday, August 27, 2009 3:41 AM
To: Robin Marks
Subject: Re: RV10-List: Big Iron Envy
G'day mate, great response.
Robin, I was unaware that you could 'wig-wag' HID lights, so thanks for the heads up mate.
For the uninitiated, could you please explain howthe switching achieved, as I'd love to do this?
I have the HID lights as per your installation (yet to be installed) ex Vans.
Kind regards my friend.
Pat
Adelaide
South Australia
From: Robin Marks <robin1(at)mrmoisture.com>
To: rv10-list(at)matronics.com; rv-list(at)matronics.com
Sent: Wednesday, 26 August, 2009 3:13:23 PM
Subject: RV10-List: Big Iron Envy
RV-List,
In the past I have mentioned that a number of pilots have said how bright & noticeable my Dual Wig Wag HID lights are from the ground when I am on approach during the daylight hours. This is exactly what I wanted from the first day I saw my neighbor’s Pilatus swoop into our home field with his flashing HID’s a blazing. I think the little boy inside of me said… “me want.”
Well yesterday on a dusk flight departing the LA basin ATC called traffic “South West 737 you have RV-10 Traffic 10 O’clock, 17 miles 8,500 feet. November 110EE traffic 2:00 O’clock descending out of one-one-thousand feet a Boeing 737.” Before I could respond the South West 737 replied Traffic Insight. Moments later the SW pilot told me through the controller “that is some light system he has on his RV-10, it’s really easy to pick up” COOL! Getting “at a boy’s” from commercial pilots.
I consider the Wig-Wag HID’s to be an important safety feature on my -10. Seeing is avoiding.
The set up is nothing out of the ordinary with the exception of dual 35W HID lights placed in the leading edge. If interested I have a page that shows the install. http://www.painttheweb.com/rv-10/Lights_LEDHID.htm . One more thing of note. When on that page you will also see some pretty expensive (but nice) LED Position Lights. My next build is an RV-8A and I have found a set of Red & Green LED bulbs for around $8.00 each including wired sockets (eBay). These appear to be an excellent and cost effective solution vs. the printed circuit board LED’s I used on my -10. Plus some significant time savings to install as well. I will report results once flying.
Not exactly the LED’s I purchased but this gives you an idea of the concept: eBay Item# 380151029392
Robin
RV-4 Sold
RV-6A Sold
RV-10 75 Hours
RV-8A Flying 2010
| Quote: | | _-============================================================ _-= - The RV10-List Email Forum - _-= Use the Matronics List Features Navigator to browse _-= the many List utilities such as List Un/Subscription, _-= Archive Search & Download, 7-Day Browse, Chat, FAQ, _-= Photoshare, and much much more: _-= _-= --> http://www.matronics.com/Navigator?RV10-List _-= _-============================================================ _-= - MATRONICS WEB FORUMS - _-= Same great content also available via the Web Forums! _-= _-= --> http://forums.matronics.com _-= _-============================================================ _-= - List Contribution Web Site - _-= Thank you for your generous support! _-= -Matt Dralle, List Admin. _-= --> http://www.matronics.com/contribution _-============================================================ |
Find local businesses and services in your area with Yahoo!7 Local. [url=%20http:/au.rd.yahoo.com/search/local/mailtagline/*http:/local.yahoo.com.au]Get started[/url].
| | - The Matronics RV10-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?RV10-List |
|
| Description: |
|
| Filesize: |
23.07 KB |
| Viewed: |
9762 Time(s) |
|
|
|
| Back to top |
|
|
AKflyers
Joined: 04 Nov 2009
Posts: 6
Location: Eagle River, Alaska
|
| Posted: Wed Nov 04, 2009 2:20 am Post subject: Re: Big Iron Envy |
|
|
We have installed both the MaxDim and MaxPulse in our planes. Both work great and were easy to install. I must add my two cents here. LoPresti, RMD, Knot2U, xevision, the leaders in the HID market, and others are pulsing the HIDs. So yes it can be done it seems. The question may be - how does it effect the long term life of the HID bulbs? LoPresti puts it like this -
http://speedmods.com/PowerPulse.htm look at the Urban Myths, and you can compare the systems here - http://maxpulsemaxdim.com/comparisons.htm . However, only one system is STC'd and has the warmup delay that seems to be so important. That is the MaxPulse unit. We cannot say if this is important or not. Everyone seems to have a different take on it. But if the HIDs have a 5000 hour life and pulsing them reduces that life by 10% you are going to be in the pilot seat for many, many hours. Your HIDs could very well outlive you. It would seem that being seen is far more important than anything? Safety anyone?
| | - The Matronics RV10-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?RV10-List |
|
_________________
Yes, that little brown spot in the picture is a bear. |
|
| Back to top |
|
|
XeVision
Joined: 07 Oct 2009
Posts: 26
Location: Ogden, Utah
|
| Posted: Thu Nov 05, 2009 9:07 pm Post subject: Re: Big Iron Envy |
|
|
| AKflyers wrote: | We have installed both the MaxDim and MaxPulse in our planes. Both work great and were easy to install. I must add my two cents here. LoPresti, RMD, Knot2U, xevision, the leaders in the HID market, and others are pulsing the HIDs. So yes it can be done it seems. The question may be - how does it effect the long term life of the HID bulbs? LoPresti puts it like this -
http://speedmods.com/PowerPulse.htm look at the Urban Myths, and you can compare the systems here - http://maxpulsemaxdim.com/comparisons.htm . However, only one system is STC'd and has the warmup delay that seems to be so important. That is the MaxPulse unit. We cannot say if this is important or not. Everyone seems to have a different take on it. But if the HIDs have a 5000 hour life and pulsing them reduces that life by 10% you are going to be in the pilot seat for many, many hours. Your HIDs could very well outlive you. It would seem that being seen is far more important than anything? Safety anyone? |
Max pulse is fine for HID if you run only the fastest pulse rate it offers, 60 pulses per minute each channel 120 pulses per minute both channels. and if you run them steady on for about 20-30 seconds before you switch to pulsing operation. The Max pulse only has a ~5 second wamup about 20 seconds too short. The bulb manufacturers (Philips & Osram) only rate the bulbs for 2000 to 3000 hours of normal use. I believe Lopresti's hours warranty is based on a hobbs meter not lights on time. XeVision has a patent pending on automatic bulb warm-up to substantially improve bulb life with HID pulsing operation.
| | - The Matronics RV10-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?RV10-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). |
|
| Back to top |
|
|
XeVision
Joined: 07 Oct 2009
Posts: 26
Location: Ogden, Utah
|
| Posted: Thu Nov 05, 2009 9:14 pm Post subject: Re: Big Iron Envy |
|
|
Reposted from another thread here:
The new pulsing Lopresti PowerPulse is the same unit made by http://seatoneng.com/ or http://www.maxpulsemaxdim.com/comparisons.htm is a pretty cool compact form factor, I have to admit, I would use it for Incandescent or Halogen lamps. It is a GREAT product.
However, its built in warm up is NOT suitable for HID IF you are concerned about ballast and bulb life. Its bulb warm up is not sufficient for HID because the warm up time is much too short (~5 seconds) and most of the pulsing speeds are too slow to be OK for HID bulbs.
XeVision was the first (4+ years ago) to offer Pulsing specifically designed for the requirements of HID, after much discussion with the HID bulb manufacturers about bulb operating requirements for long life (ARC plasma behavior and electrodes). We make our own ballasts but these quality HID bulbs are ONLY made by Philips or Osram (Sylvania).
The unit Lopresti is offering has only a 5 second warm up, OK for incandescent or LED (not needed), but NOT good for HID.
HID requires the bulb arc plasma reach steady state or very close to it before pulsing should start if one cares about HID system life. Anything less than 20 seconds of continuous warm up time is too short and will significantly affect HID bulb life. Slow pulsing is also harmful, 60 ppm (1 Hz) per channel (120 ppm both channels "wig-wag") is the approximate optimal speed considering both bulb life and visual effectiveness for HID. Short warm up and / or slow pulsing allows the plasma to cool off too much in pulsing operation, requiring very much higher starting voltages to restrike the ARC, thus accelerating erosion of the electrodes.
Once the HID bulb is warmed up, 20-30 seconds (sufficient) or more, if pulsing is fast enough, the on pulse is long enough and the off period short enough the plasma can stay hot enough to again sustain a low voltage arc (~85 VAC) as it does in steady state without resorting to a high voltage restrike 25+ KV for each pulse.
The Lopresti unit offers 44 ppm (22 ppm each channel) and 88 ppm (44 ppm each channel), these are for both channels combined. Only the 120 ppm their fastest rate (60 ppm each channel) is suitable for HID.
Note: XeVision has a Patent Pending regarding warm-up technology for HID (filed over 4 years ago). The Patent office has granted our Patent about 1 month ago and the final paperwork has been submitted for issuance from the US Patent office. The original XePulse I and the about to be released XePulse II are covered by this Patent. The XePulse II is about 20% of the size of the original unit and the new unit includes additional patentable enhancements to insure maximum HID system life while in pulsing operation.
Philips and Osram (the only quality D1S) bulb makers in the world. both claim a Tc of either 2500 or 3000 hours. This bulb statistic means that only 63% of the bulbs will still function (on/off) after that amount of run time in the lab. Lopresti has used and still uses these 2 brands of D1S HID bulbs and yet still claims a 5000 hour or 5 year warranty ???? This must be a hobbs meter based warranty, not a true usage based warranty. Since most users will not use their HID lights as a large % of total flight time this does not cause them to provide many free replacement bulbs. And very few users will fly more than a couple of hundred hours per year.
Without a proper arc chamber warm up Philips and Osram claim the bulb is only good for about 20,000 starts. That is only 6 hours of continuous pulsing if it is not in the plasma (steady state) instead of excited Xenon only as during the initial starting. Depending on how someone operates their pulsing system, pulsing while "cold" the warmup to steady state can be extended to over 5 minutes which wears the electrodes at an accelerated rate. Once the arc gap gets large enough and 105-110 VAC (max steady state bulb voltage) cannot sustain the arc the bulbs life has ended. When a bulb is new it takes about 85 VAC and 0.4 amp (35 watt) (0.6 amp for 50 watts) to sustain the arc once warmed up. When the bulb is cold it takes more power to keep the arc going. During this early phase of bulb operation it can take 2X to 3X the power to the bulb to keep it "lit". This extended overpowering to 70-90 watts is hard on the bulb this is the bulb operation phase to be avoided for HID pulsing. Hot restriking after less than a second of cool down (more than 30 seconds) it takes as much as 25,000 Volts to restart.
Every other company (6) which offers a pulsing system indicates 30 seconds to 1 minute steady on before pulsing should start (flip the switch) for HID.
The HID bulb manufacturers all agree that a close to steady state power to the arc is mandatory for good bulb life and the higher the pulsing frequency the better (that works well visibly). Hot restarting takes much more power if the bulb is allowed to cool for more than 1/2 second. If pulsing only occurs while the plasma state is well established (after 20-30 secs) then the power required to re establish the arc is almost the same as to keep it "lit". Its all about the impedance within the arc and under what conditions is it easiest on the bulb and ballast to re establish the arc. Its all about adequately warming the arc chamber up and keeping the off time between pulses short and the on time of the pulses long.
I guess its their engineers (facts) "opinions" (Philips and Osram) vs Lopresti sales team opinions. I think I'll stick with them, after all they are the bulb experts.
The power being put into the bulb/ballast system can easily be monitored with an amp probe on the cable to the bulb on an oscilloscope to see how the power varies between operating the bulb these 2 different ways, "cold /cool" pulsing or "hot" (warmed up) "steady state" pulsing.
One of Lopresti's people told me that their HID warm up was "instantaneous" Those guys are miracle workers and can defy the laws of Physics.
| | - The Matronics RV10-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?RV10-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). |
|
| Back to top |
|
|
rv10(at)colohan.com
Guest
|
| Posted: Thu Nov 05, 2009 9:34 pm Post subject: Big Iron Envy |
|
|
On Thu, Nov 5, 2009 at 9:07 PM, XeVision <dblumel(at)xevision.com (dblumel(at)xevision.com)> wrote:
| Quote: | 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).
|
I'm curious:
a) how many lumens are typical HID landing lights? The newest Cree emitters can put out 1000 lumens per emitter, and hooking up more than one of these emitters into a single unit is pretty easy. I have a 900 lumen 2-emitter bike headlight (from brlights.com), and it is impressively bright, able to illuminate most of my backyard.
b) besides lumens, what determines reach? I would have thought it would be a simple combination of the amount of light energy, and the beam shape (aka, reflector design). Are there other variables involved? Do certain colour temperatures tend to illuminate further?
Chris
[quote][b]
| | - The Matronics RV10-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?RV10-List |
|
|
|
| Back to top |
|
|
XeVision
Joined: 07 Oct 2009
Posts: 26
Location: Ogden, Utah
|
| Posted: Thu Nov 05, 2009 10:04 pm Post subject: Re: Big Iron Envy |
|
|
For a good landing light to reach out 1000 ft or more you must be able collimate (sp) the light. Something that so far cannot be done so well or easily with LED. With a high output LED you must maintain control of the junction temps. LED's dont perform all that well with parabolic reflectors.
35 watt (bulb watts) HID at 4200K 3200 lumens, 50 watts HID (bulb watts) ~5500 lumens, 75 watt HID (bulb watts) 8000+ lumens.
| | - The Matronics RV10-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?RV10-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). |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
