Osram Golden Dragon lights?

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The reason for the lack of P31 numbers is that it was bought to give to someone as a replacement for a failed light - it was only in my hands for about 2 days. It is now in regular use by a cop. Our local constabulary only issue alkaline AAs so i looked for something with good performance on those.

AFAIK the P32 is just a P31 with modes and I like it a lot. It certainly seems to be just as well made and is certainly exceptional quality for the price which is less than I paid for the P31 which was $14.31. The P32 was $13.something. Unless you are hooked on single-mode lights I'd definitely say get the P32 instead of the P31.

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Thanks Don

KD has the P32. Kost 13.57$ They state its a 90 lumens light. DX says 160 lumens. Both are Q3.

They are probably unreliable both of them. I trust your measurement. midieval10 says that box says

4.2V max. I may buy one to try it with a 14500.

The AA-S1 with a 14500 is clearly brighter than the P32 with NiMH - the hotspot is several times the size though the spill is of similar brightness - the beam from the AA-S1 is wider. Here's a beamshot about 60cm from the ceiling. Will try outdoors beamshots of the two once it gets dark.

Thanks again Don. I could not understand why the 1.5V Hugsby could be brighter than the 14500 AA S1.

Your picture clearly show that its not the case. The hotspot also is not as bright either.

Maybe midieval10 have received a special (new?) version since his is brighter. If wee kindly ask he maybe

would send a beamshot picture of his two lights together?

Here are my beamshots. They are taken about 70cm from the ceiling. All batteries are charged to fullest prior to shots.

Left to right:

Trustfire F23 10440, Hugsby P31 nimh, UniqueFire AA-S1 14500

Trustfire F23 10440, Hugsby P31 nimh, Uniquefire AA-S1 14500, Trustfire R5-A3 14500

Hugsby P31 nimh, Uniquefire AA-S1 14500, Trustfire R5-A3 14500, Solarforce L2 with XPG-R5 18650

Hugsby P31 nimh, MXDL SA-28 18650 full flood, Solarforce L2 with XPG-R5 18650

Wow! Quite a difference between yours and mine. Mine was bought when they were first launched - early November 2009

Yes a huge difference. Your AA-S1 looks so bright!

You are talking about the AA-S1? so yours is brighter?

This is quite a difference and I think its clear that his AA S1 is not as bright as

the "original" ones. Have they change led or driver I wonder?

As medieval told, quality not so good, and now less bright. Dont buy... is a new batch, was sold out on June-July. New batch from latter July - August. Bad

On mine which I got early august, the quality of the build is quite decent. Coating is very hard (seems like ha-iii). The only "problem" on mine is I"m not sure whether the kinda poorly defined hotspot is due to the emitter board being slightly offset (and way too much thermal glue). I'm getting a smooth reflector to see if I can improve. it.

The coating on mine is pretty soft - you can see scratches on it where the wire clip has moved against the knurling. A Hugsby P32 which claims type 3 anodising can scratch it.

I used pliers on mine and paint only came off where I took off/reshaped the base metal. Maybe it's just really tough ha-ii.

The wonders of chinese quality control.

Interesting aside: some tools/knives I got from china have a pretty tough black finish on them (not just cheap paint). The same finish is somewhat expensive (~$10) on similar "brand name" tools. It costs <$1 on the chinese ones.

I got the red black cat 5000k from kd today. It's very good, and surprisingly 5000k (not warm like the pic previously featured here, I suspect that's the "yellow" warm version). A little less bright than the AA-S1 with nihm, but not night and day.

Buy it.

---

BTW, the AA-S1 I have is not nearly as bad as midieval's, and I only got it a couple week before this. Mine is quite bright on 14500 as well (~200lum I'd guess). His looks awefully white in tint (more so than the crees), and only my nice warm cree drop-in is warmer than my AA-S1 osram. Oh well, chinese lights.

Let´s do an investigation.

I have noted that the older versions of Black Cat were coming with a LED with 5 divisions (4 lines). Now they are coming with 2 divisions (1 line). So I beleive that the one with 5 divisions is Golden Dragon Plus. The one with 2 division is simply Golden Dragon.

I imagine that with the AA-S1 happens the same, previous versions were with GoldenDragon PLUS and the last ones with simply Golden Dragon.

Do you have a convex lens? can you put one in front of the AA-S1, light it up and see how many divisions has yours?

Also Don can do the same in his S1, also Medieval, to compare

The ones with 4 lines (looks like a phone plug) are crees. All the golden dragons are this "small square in the corner of big square" shape:

http://www.digikey.com/us/en/techzone/lighting/category/high_power_leds_300ma_to_499ma.html?tab=8

My 4-5 osrams (from raging blue to this nice 5000K white) all look the same.

I am talking about that:

http://www.forolinternas.com/viewtopic.php?f=5&amp;t=207&amp;start=20#p1326

Look the drawing showing the LED die. First versions of Black Cat were coming with a LED which it´s die was like it, 4 lines, 5 divisions. Now the Black Cat is coming with same LED but with 1 line, so 2 divisions and is less bright than older ones.

I beleive that the one with 5 divisions is GDP and the one with 2 divisions is GD (not Plus)

I whish to know if older AA-S1 were coming with 5 divisions LED and newer are coming with 2 divisions LED

The digikey link above will go to photos of the emitter. I don't know what xrayboy is drawing, but it's not a dragon plus according to digikey (one of the premier US parts suppliers).

explicitely:

GDP:

GD:

OK in those photos the die looks the same. Dont know then which led belongs the other die

No, you are correct to some extent; this 5 square pattern exists. I searched pretty exhaustively on digikey and there exist OSRAM GDP part numbers with that sectioned design:

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&amp;name=475-2602-1-ND

The pattern I'm able to discern (I don't know if it's 100% as the OSRAM datasheet nor any of their application notes specify this) is that of the "pure white" parts, the 6500K ones are two squares, and 5600K ones are 5. HOWEVER, all GD parts also share this trait (5600K):

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&amp;name=475-1331-1-ND

ALSO, of ALL the "warm white" parts (2700K, 3000K, 3500K, 4000K, 4500K), none I could find have the 5 square shape. So this would imply the one I got is 4500K and not 5600K. Other than this, I'm not sure this means anything else. All are 1A max, and of course flux bin is not marked.

This took quite a bit of time.

I would've like some of the 5600K's, but I guess they don't ship them anymore. Oh well.