Led4power.com : LD-4 CC linear drivers, ILC-0/1 illuminated tailcaps, optics, MOSX, copper DTP MCPCBs...

Remember Kawi, the XSword is only making 370 lumens (for over 2 hours!) but still puts light on a water tower 1.9 miles away. Don’t get to “focused” on the low lumens numbers. :wink:

Wow your room has a very dense “atmosphere” for a beam to show up like that. I can’t get any of my throwers to show a beam within my house.

The secret beamshot trick:
My wife was cooking the dinner and burned it a little :innocent:
But it was delicious ! And good for beamshots :smiley:

Hey, some dishes were literally made to be burnt! I love Iranian sour stew with burnt rice!

I vote for Osram White Flat.

Yes XP-E2

But old XP-G2 S4 2B also deserves to be in that graph cause it has just slightly lower lux performance(and sometimes certain g2s42b can have even better performance than certain black flat).

+1 for white flat. Black flat is well known for thrower led and it is easier to get what it is and also remember the name.

Another thing:
Measured the GT mini current and lumens with sanyo GA cell.
It has 792 lumens and it draws 5,5A

Sorry about those promises but new osram leds came to me and I had to process bunch of orders etc., always something unexpected appears and limits my time for other stuff.

I will not predict release dates anymore, products will just appear on web,maybe that's better.

I’m sorry if this was asked before, but can the 17mm LD-4 drivers be sanded/filled to 15mm diameter and work properly?

I would ask this on PM but seeing so much work and so few time I’ll ask to you, fellow members :innocent:

Please do it soon. I have been waiting since you announced the Luxeon MZ LEDs months ago. There is nothing that’s compareable to your “complete system”.

I am also waiting to make a combined order w/ X6 spacer + other things

GND ring is ~1mm wide so sanding driver down to 15mm is probably too much, 16mm would be ok.

Some more checks on the BLF D80 with KW CSLNM1-TG led. (Should this led get a dedicated thread btw?)

First, I was not happy with the quite random centering that twisting a 3535 centerpiece provides, so I modded the centerpiece: with a scalpel I cut new corners 45 degrees from the original corners, fixing the 3030-sized led much better. So the flashlight has two centerpieces, one locked around the other, both sanded very thin at the underside for exact focus, now also exact centered.

With the led perfectly centered in 3 dimensions the beam was superb.

Now I measured throw again, first on the almost full 30Q (4.08V): 140 kcd (as I measured before), then let the light run for half an hour (it got hot, I estimate 70 degrees! A biscotti driver has no thermal stepdown, and a 3.9 amp flashlight produces some 15W of heat), the battery was now 3.59 V, so wel over half empty. Measured throw again and still got 125 kcd.

I did the same test with the same battery on a C8 with dedomed XP-G2 S4 2B. Started at 4.08 V with 141 kcd, and with the cell at 3.59 V I measured 90 kcd.

So the low voltage combined with the much needed current regulation of the biscotti driver makes the output and throw of a flashlight with the new Osram led more constant than a light with a direct driven S4 2B.

Plus the current is a bit lower for the same throw.

Nicely done Jos! Good thinking outside the box with the dual centering rings, very imaginative!

Thanks Dale, I’m very happy with how I got it done. But how I would like some fitting centerpieces for this led!, would make life quite a bit easier.

Thanks for the answer mate :wink: Maybe I should thing reversely, then, sanding the driver till the 16mm and the extra by sanding the flashlight hole!! Thanks again!! :+1:

Nice work djozz. I’d have no hope of achieving a result like yours. :+1:

Hi

LD-B4HV (2s - 8.4v) can use with triple XP-G2 connected in series ?

I did that here: OSRAM CSLNM1.TG & CULNM1.TG 1mm², CSLPM1.TG & CULPM1.TG 2mm²

Now I must gather all relevant data and builds into first post of that thread.

No, 3 LEDs in series would have 9-12V forward voltage, 2S cells on the other side have 8.4V max.