EMISAR D4KTI COLORFUL is here, but hank, we really need a high resolution close up for each finish.
Holy shit even the switch retaining rings are anodised!
I believe, it's not a anodisation, but fiber laser.
Colors are nice but you can’t beat brass or copper.
Re: D4KTI
Since titanium has worse thermal heat dissipation than aluminum, would it make more sense to add the boost driver here?
I bought the aluminum D4K with the boost driver add-on. Compared to the FET driver, the maximum output is lower. On the other hand, the output is better regulated. Is there any chance to increase the maximum current? I think someone mentioned 2A per LED as the default current.
D4KTI colorful version is available
Hey Hank, the D4KTI colorful D. Circuit have some markings on the copper head. It that also done by laser? Can you color the copper head too?
Does anybody know what kind of sustained output a KR1 gets with 70.3 HI? And has anybody been able to measure the duv of theirs?
Those are gorgeous, especially the crackle! Do you have higher resolution photos to share, Hank?
It depends of the colour and Cri of the 70.3 Hi LED … i measured the Lumen of my D1v2 (almost same like KR1 but with sideswitch) in the first second in Turbo as follows:
| D1 | XHP70.3 Hi 70Cri | 3000k | 3230 |
| D1 | XHP70.3 Hi 90Cri | 4000k | 2380 |
| D1 | XHP70.3 Hi 90Cri | 5000k | 2560 |
| D1 | GT FC40 | 3000k | 2080 |
| D1 | SBT90.2 | 5700k | 5320 |
| D1 | B35AM | 3500k | 1120 |
| D1 | 519A dd | 3500k | 900 |
LG LitN
Thanks for the measurements, pretty good results 
Do you currently work on something new Hank? Any news about the 14500 flashlight? And do you consider doing a D1SV2 with 21700 tube in the future?
This is very cool, some of the best designs I have seen in TI before. Congratulations!
Hi Hank!
Could you please tell me, do you plan to update your boost driver? I really want to have increased efficiency and not cut off turbo mode at the same time. Maybe boost + Fet or a new inductor?
To be honest when I heard about the new d4k development I expected you to modify the body enough to accommodate a larger inductor and give more than 2Amps per LED.
In addition, Jack firefly will soon release new flashlights with the updated Lume X1 driver which looks very promising.
You may also heard about the development of a new driver from thefreeman. Maybe you plan to take some ideas from these projects or already in the process of developing an updated driver?
Please share your plans on this topic, for me personally, it’s much more interesting than the new battery sizes and case colors.
Thank you!
<< Lume X1: 40W Single-Cell Boost Driver with Anduril2 and UDR >> -Lume X1
thefreeman’s HDR Anduril 2 high efficiency drivers - update : FWxA boost driver -Freeman’s project
What about after they settle? Say about 10-20 minutes in?
Not a fan of titanium for flashlights due to poor thermal properties, but that Crackle is gorgeous!
Hi, yes, it will be a 2 LEDs dual channel 14500 light.
1 Thank
Awesome!
Now we just need 21700 tube for D1v2...
Any photos you could share with us or is it too early to ask for that?
I did calculated it earlier, it's not physically possible, the head opening is to small. The walls would have to be 0.3mm or thinner.
It have to be new model, with new bigger head opening, that isn't compatible with the normal D4v2 tubes (just like in the D4K case).