LEDCorp Epieon question (or two...)
- Thread starter PJD
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Charles Bradshaw
Flashlight Enthusiast
It is a high dome (1 watt HD LS). Others have given good reports. I don't have one, but there is a thread in here somewhere on it.
BF Hammer
Enlightened
I bought my epieon to put in my 3D Mag a couple of weeks before the announcement of the everled, but I'm not disappointed with what I have. The regulated everled likely would be my first choice now. I would love for somebody to do a head to head review of the epieon and everled in the same light. I want to see how the beams are shaped by the different emitter shapes.
The epieon is a high-dome 1W LS. It has a tight, even hot spot in the beam (when focused) with smooth illumination in the halo around the beam center. Very white in color. I would rate it a little brighter than the stock incandescent Mag bulb I replaced. If your goal is just to give a Mag that you already own and like all the advantages of a LED light source, the epieon is a good way to do that. If you're after a way to soup-up your light to be extra bright or light up the entire side of a warehouse, look to the various factory-altered mags available from Inretech or some of the modders in this forum.
The epieon is a high-dome 1W LS. It has a tight, even hot spot in the beam (when focused) with smooth illumination in the halo around the beam center. Very white in color. I would rate it a little brighter than the stock incandescent Mag bulb I replaced. If your goal is just to give a Mag that you already own and like all the advantages of a LED light source, the epieon is a good way to do that. If you're after a way to soup-up your light to be extra bright or light up the entire side of a warehouse, look to the various factory-altered mags available from Inretech or some of the modders in this forum.
radellaf
Flashlight Enthusiast
The HD makes for a tighter spot, but a very black hole in flood mode. Neither beam has much in the way of irregularities or texture.
The SE is MUCH worse at making a tight spot and has a lot of brightness variation (texture), but when in flood mode the hole in the middle is somewhat filled in with stray light patterns.
That's for the Mag reflector. Others work very well with the SE.
Some beamshots in this thread
http://www.candlepowerforums.com/ubbthreads/showflat.php?Cat=&Board=UBB3&Number=185084
The SE is MUCH worse at making a tight spot and has a lot of brightness variation (texture), but when in flood mode the hole in the middle is somewhat filled in with stray light patterns.
That's for the Mag reflector. Others work very well with the SE.
Some beamshots in this thread
http://www.candlepowerforums.com/ubbthreads/showflat.php?Cat=&Board=UBB3&Number=185084
I received an email add from LEDCORP offering Epeions for $29.95 @ in quantities of 1 to 3 through May 7. (This was sent to their customer list)
I responded that I would be interested only if they were willing to exchange the pee green ProIII PR based bulb I previously bought that is the dimmest, greenest LS I have ever owned.
LEDCorp graciously offered to swap bulbs with me and indicated that they would always exchange bulbs for unhappy customers.
Does anyone have any experience whether the 2 cell Epeions are dimmer than the 3 cells? Do the 2-cells have boost circuity?
I responded that I would be interested only if they were willing to exchange the pee green ProIII PR based bulb I previously bought that is the dimmest, greenest LS I have ever owned.
LEDCorp graciously offered to swap bulbs with me and indicated that they would always exchange bulbs for unhappy customers.
Does anyone have any experience whether the 2 cell Epeions are dimmer than the 3 cells? Do the 2-cells have boost circuity?
BF Hammer
Enlightened
I recieved the same email offer. I really don't have another PR flashlight I like enough to put another LED into. Besides, I'm eagerly awaiting my first Arc LSH to arrive in the mail, so that will keep me distracted from that offer for a while. /ubbthreads/images/graemlins/thumbsup.gif
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The_LED_Museum
*Retired*
[ QUOTE ]
lemlux said:
Does anyone have any experience whether the 2 cell Epeions are dimmer than the 3 cells? Do the 2-cells have boost circuity?
[/ QUOTE ]
I'm guessing they hand pick the Luxeons for low Vf, and use those for the 2-cell bulbs. Higher Vf Luxeons go in the 3-cell bulbs, and they probably have resistors in the base for 4, 5, and 6-cell bubs. But remember, I'm GUESSING here because I haven't tried their Epeions yet. They're presumably a bit more advanced than the original Pro Series 3 bulbs.
lemlux said:
Does anyone have any experience whether the 2 cell Epeions are dimmer than the 3 cells? Do the 2-cells have boost circuity?
[/ QUOTE ]
I'm guessing they hand pick the Luxeons for low Vf, and use those for the 2-cell bulbs. Higher Vf Luxeons go in the 3-cell bulbs, and they probably have resistors in the base for 4, 5, and 6-cell bubs. But remember, I'm GUESSING here because I haven't tried their Epeions yet. They're presumably a bit more advanced than the original Pro Series 3 bulbs.
Charles Bradshaw
Flashlight Enthusiast
Exchange for an ultra dim 2 cell Pro Series 3, huh???? I might have to give them a call. Mine barely lights in the Mag 2D that I have and flickers as you adjust focus. I have a 1997 vintage 2D Mag, and the bulb stem isn't long enough for reliable operation.
To put it simply, my Versalux PR-2 is brighter in the 2D Mag, then my Pro Series 3!
With those LDs, you get a pea green side emission that really sucks when things are focused. Tried it in an old Radio Shack 2AA focusing Metal Mini flashlight (and 2AA lithiums for decent brightness).
To put it simply, my Versalux PR-2 is brighter in the 2D Mag, then my Pro Series 3!
With those LDs, you get a pea green side emission that really sucks when things are focused. Tried it in an old Radio Shack 2AA focusing Metal Mini flashlight (and 2AA lithiums for decent brightness).
Craig was right.
John at LED CORP advised that they do pick the lowest vF luxeons for the 2-cell bulbs. Their go/no go decision is that they make 2-cell bulbs if the Luxeon pulls >160 mA from 2 AA's.
LED CORP targets the 3 and 4 cell bulbs to pull (edit) 320 mA on 3 or 4 alkaline AA's, respectively,as they want to keep the luxeons cool.
They have agreed to cherry pick a couple of their "hottest" Luxeons, i.e. those that pull around 280 mA on 2@ alkaline AA's and send them to me (one on exchange.)They thought it might take two weeks to find two that met that screen. These should work well on 2 @ lithium AA's.
They wouldn't give any indication as to what percentage of their luxeons were Q rated.
John at LED CORP advised that they do pick the lowest vF luxeons for the 2-cell bulbs. Their go/no go decision is that they make 2-cell bulbs if the Luxeon pulls >160 mA from 2 AA's.
LED CORP targets the 3 and 4 cell bulbs to pull (edit) 320 mA on 3 or 4 alkaline AA's, respectively,as they want to keep the luxeons cool.
They have agreed to cherry pick a couple of their "hottest" Luxeons, i.e. those that pull around 280 mA on 2@ alkaline AA's and send them to me (one on exchange.)They thought it might take two weeks to find two that met that screen. These should work well on 2 @ lithium AA's.
They wouldn't give any indication as to what percentage of their luxeons were Q rated.
BF Hammer
Enlightened
After my first post in this thread, I decided to take the old batteries out of my 3D Mag/Epieon because I believe they may be as old as 6 or 7 years right now and were likely to start corroding in the future. They are Ray-O-Vac Alkalines of mixed vintage, 1 cell with an older case design and 2 cells with a newer design. Instead of just changing them, I decided to do an endurance test of the Epieon in a 3D light.
I turned on the light Tuesday night (4/29). The next night there was an extended power outage in my neighborhood, and the light was still plenty bright to use during that outage. It's now Friday night (5/2) and the light has finally dimmed down to the level of an Arc AAA (I did a direct comparison). The beam is still white, no green or blue tinting. I'll continue the test overnight partly because I'm curious to see how dim it will be in the morning, and finally change the batteries. I would say that's not too bad for old, mixed batch cells that were used off and on with the old incandecent lamp before this test.
I turned on the light Tuesday night (4/29). The next night there was an extended power outage in my neighborhood, and the light was still plenty bright to use during that outage. It's now Friday night (5/2) and the light has finally dimmed down to the level of an Arc AAA (I did a direct comparison). The beam is still white, no green or blue tinting. I'll continue the test overnight partly because I'm curious to see how dim it will be in the morning, and finally change the batteries. I would say that's not too bad for old, mixed batch cells that were used off and on with the old incandecent lamp before this test.
I just got the @29 Epieon yesterday. I put it in my Turtle I ( radio shack version). It is not what I expected. The beam is totally different than the beam shots I saw in this forum. There is a big hole in the center, and a line across the center. It doesn't happen to the original lamp. I am new about flashlight. I learn everything from this group. I am not sure this is the flashlight problem or the lamp. I plan to put Epieon on responder 4aa. Fortunately I haven't ordered the responder yet. Do I have to put this lamp to something that is adjustable focus like maglite ?
Thanks,
Ron
Thanks,
Ron
soloco
Enlightened
If you are looking for a smooth, tight beam, you should get something that you can focus. Otherwise, you will probably have to add spacers to manually focus the Epieon in whatever flashlight you are using.
BF Hammer
Enlightened
[ QUOTE ]
hanuman said:
The beam is totally different than the beam shots I saw in this forum. There is a big hole in the center, and a line across the center. It doesn't happen to the original lamp.
[/ QUOTE ]
Yes, that sounds like an issue with how high the bulb is inside the reflector. An adjustable focus light might be the safest bet for this lamp, but it doesn't necessarily mean that it won't work in a different lamp better.
hanuman said:
The beam is totally different than the beam shots I saw in this forum. There is a big hole in the center, and a line across the center. It doesn't happen to the original lamp.
[/ QUOTE ]
Yes, that sounds like an issue with how high the bulb is inside the reflector. An adjustable focus light might be the safest bet for this lamp, but it doesn't necessarily mean that it won't work in a different lamp better.
radellaf
Flashlight Enthusiast
FWIW, I've started using my Epieon 3-cell in the "Our Best Aluminum" light. The current is higher, but I finally checked the temperatures and I only measure 120 or so degrees in the O.B.A. light, which is quite noticeably cooler than the 140-160 I was measuring in a D-cell MagLite where the current was 250mA or so. The O.B.A., as I found in my EverLED testing, heatsinks better than any other PR based light I have!
Afterimage
Newly Enlightened
Too bad the "best aluminum" is no longer available, at least directly from Ledcorp. I think Dorcy sells a clone though.
radellaf
Flashlight Enthusiast
That's a shame, it's a nice light. The blue (Dorcy) one used to be on lifestylefascination but is gone now.
---
I found a case where the Epieon beats a white EverLED - really drained D cells running about .8V each. Both LEDs will light at about the same brightness, but the EverLED is pulling way more current. The Epieon drawing just over 100mA lights up quite nicely.
As I once measured, resistored LEDs are fine with low currents, they're just a little dim at mid-voltage and a little overdriven with fresh cells.
My red EverLED must be faulty, as it only will light a second or two off those batts, whereas all the other colors work fine. Well, apart from the Yellow that I'm awaiting a replacement for. It ran 30 min or so and then just died.
I've also noticed cracks in the domes of most of my EverLEDs, anyone else see that? Only the Red is real bad. The top of it wiggles. But, as LED Supply said they'd ship me a new yellow when asked about that one, I imagine I won't have trouble getting the cracked units replaced either. Hope not.
---
I found a case where the Epieon beats a white EverLED - really drained D cells running about .8V each. Both LEDs will light at about the same brightness, but the EverLED is pulling way more current. The Epieon drawing just over 100mA lights up quite nicely.
As I once measured, resistored LEDs are fine with low currents, they're just a little dim at mid-voltage and a little overdriven with fresh cells.
My red EverLED must be faulty, as it only will light a second or two off those batts, whereas all the other colors work fine. Well, apart from the Yellow that I'm awaiting a replacement for. It ran 30 min or so and then just died.
I've also noticed cracks in the domes of most of my EverLEDs, anyone else see that? Only the Red is real bad. The top of it wiggles. But, as LED Supply said they'd ship me a new yellow when asked about that one, I imagine I won't have trouble getting the cracked units replaced either. Hope not.
I went home at lunch and tried the two-cell epieons. One is in a PT20 with 2 @ lithiums and one is in a discontinued aluminum Rat Shack 2AA PR light with 2 @ lithiums.
The Rat Shack light makes an acceptable wide spot with an even and usable side spill. The PT40 has a (edit) dimmer but tighter hot spot with a brighter uniform sidespill. I will need to try a couple of Carley spacer rings to see what they do for the hotspot. The sidespill flood is wider than a McFlood, and the hotspot is roughly equivalent in diameter to the PT Impact.
These will both be small long run time lights kept in vehicles.
The Rat Shack light makes an acceptable wide spot with an even and usable side spill. The PT40 has a (edit) dimmer but tighter hot spot with a brighter uniform sidespill. I will need to try a couple of Carley spacer rings to see what they do for the hotspot. The sidespill flood is wider than a McFlood, and the hotspot is roughly equivalent in diameter to the PT Impact.
These will both be small long run time lights kept in vehicles.
BF Hammer
Enlightened
I'll drag this thread back up to the top just to say that there is a mini review and comparitive beamshots (by me) of the 3-cell Epieon in the reviews forum.
Epieon Beamshots/mini review
Epieon Beamshots/mini review
radellaf
Flashlight Enthusiast
Nice review.
I seem to have a penchant for liking discontinued lights here...I love the Ray-O-Vac 2AA with an EverLED, but all the new units use bi-pin rather than PR bulbs.
Still no luck getting replacement EverLEDs, though I've been told an amber was on its way as of about a month ago. Oh well, nothing happens quickly in the world of Luxeon LEDs. Still trying to get a reply about the cracked ones. Anyone else out there have cracks? Look closely, please.
I seem to have a penchant for liking discontinued lights here...I love the Ray-O-Vac 2AA with an EverLED, but all the new units use bi-pin rather than PR bulbs.
Still no luck getting replacement EverLEDs, though I've been told an amber was on its way as of about a month ago. Oh well, nothing happens quickly in the world of Luxeon LEDs. Still trying to get a reply about the cracked ones. Anyone else out there have cracks? Look closely, please.
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