What did you mod today?

I think it is throwier too. I hoped the XPL-HI would be more efficient so if the tint would have been perfect this was a good idea. I may go for the SST-20 as next led in this light but perfect would be a led with 1x1mm die just as the original XR-E.

I have JM70 II, I have 1mm² whitey with no host for it, I wonder what would it do….but probably nothing special.

You modded some tubes into a flashlight. :slight_smile:

I bought a JM70 recently to put a White Flat in it. I couldn’t find any info on a JM70 II. What is the difference?

I just put a Black Flat in a little Utorch UT01, pretty cool, intense little light! :smiley:

Does your UT01 have a stock driver? What is the amp draw?

Magnetic charging

contactcr, 1.09A on an 14500 cell freshly charged. So it’s the stock driver, 4 modes. (Click on, click to shift modes L-H, hold to turn off) Still works with an AA Alkaline. :wink:

I know, I know, I’m slacking. It should be pulling 57A and making 75,000 lumens by now…. :person_facepalming:

Armytek Partner C1 driver swap to H17f. The flush reverse switch was done last week or so.

If you bought recently, you probably got II. As already said, it has magnetic charging.

Please let us know how does it work!

tint p#rn alert, this post is not suitable for viewers with any sense of practicality

Yesterday evening I hit the tint jackpot.

A few days ago I modded my classic Romisen RC-G2 with a 90CRI 3000K XP-L-HI from Kaidomain, and although the colour temperature and CRI were according to specs, the tint was above the BBL and rather yellow/greenish compared to i.e. the SST-20-W 3000K 95CRI. On top of that I liked the beam less floody, the old XR-E in the RC-G2 was way throwier and I wanted that back.
(some info on the mod one page back in this thread: What did you mod today? - #6377 by djozz )

So after slicing 4000K 90CRI Samsung LH351D with very good tint results before, I had a go at slicing the SST-20-W 4000K 95CRI, to get the throwy beam that I wanted in the RC-G2 and hopefully a good tint on top. I managed to do the slice very close to the bond wires, as low as it can go, and then built the led into the flashlight. It looks in the picture that there is a burnt part in the phosfor, but this is a fresh led that had had no more than 50mA current when the picture was taken.

And indeed I got my very good tinted throwy beam, no rings, no visible tint shifts, no green or too yellow but rosy, very nice! Here’s the beam on the white wall from 2.5 meters, phone cam on daylight setting.

It has a Blue spring at the tail now and a raised brass post at the driver side, so resitances are low. The driver is a bistro driver that I set on 3 levels plus moon, on the Vapcell 14500 I get 0.14 lumen, 3 lumen/15mA, 98 lumen/620mA, 410 lumen/4.65A. The efficiency is very low, 40lm/W for the low levels, just 25 lumen/W for the highest setting (which is just twice the efficiency of a halogen bulb :person_facepalming: )

I could see that the tint was nice, but then I measured the tints of the hotspot and found how good they actually were:

Highest 410 lumen setting, pretty good CRI, tint on the rosy side:

Medium 98 lumen setting:

Low 3 lumen setting. Not great output but look at the numbers :sunglasses:

It will not win any efficiency award but the trusty rusty RC-G2 has gotten a worthy modification :slight_smile:

1 Thank

:confounded: Yuck! Glad you like it…

told you that this is for a selected group of tint weirdo’s :smiley:
(high CRI tint pics are never look like reality, they tend to look brownish while it looks way whiter in real life)

Right On! It’s better than Yellow or Orange… but a bit too Rosy for me though…quite a bit… :smiley:

Edit: I really like that Old Light :+1:

The problem there is the daylight white balance with a low tint from the emitter. :wink:

Set your camera for 3500K and it should look like you see it.

And I’m with Kawi, I’d throw that one in the trash. :stuck_out_tongue:

Edit: Beautiful slice on it though! Well done!

Time for a BLF tint schism :smiling_imp:
(cool tints-cool schmints :stuck_out_tongue: )

hahahahaha, I don’t like cool tints, per se, just really don’t like orange or brown light. Campfire girls or whatever. They can use it to cook their s-mores… :slight_smile:

djozz that’s very good info. Amazing how much DUV drops with a tint slice on the SST-20 instead of going up like on the Crees. Too bad the efficiency is so poor.

I’m a bit surprised about the efficiency loss actually, compared to an undomed bare led I would expect 20% loss for dedoming and 20% cfrom building into a flashlight, assuming about 4A with tail on (I measured 4.65A with a clamp meter bypassing the clicky tail), that should be 550 lumen. I see that some light leaks to the side, but in a reflector build like this even most of that light should end up OTF.