BLF GT (preliminary) modding thread

I ordered two new leds at KD, for my pleasure 4000K 80CRI, which is a C4 bin but should still do over 1 Mcd.
t.b.c.

Oh and I am not sure there is a market to make a big batch of drivers for the XHP70.2 GT at this point seeing as the mcpcb is still a custom mod, so I just have my leftover prototype drivers available to sell.

I currently have 4 of them ready to ship, if anyone is interested PM me.

I also still have 1 XHP70.2 GT left ready for a new home.

Hi TA, I have not followed your mods very well but for using this XHP70 driver I guess the battery configuration needs to be altered to 6V instead of 12V?

Btw, I measured the voltage drop of one of the carriers while at 2A current, using 4 aluminium blanks in the carrier of exact the same length as a buttontop30Q, and I measured 0.2V voltage drop from the resistances inside the carrier.

0.2 V drop over 12V is not very significant so that is :+1:

Nope, that was the point of this driver, it works at the native 12V the GT comes as.

All you have to figure out is the MSPCB (the best option right now is the sinkpad 46mm aluminum mcpcb that can be sanded to fit or a modded SD75 mcpcb if you can get it), Or wait for lumintop to hopefully release a pre-made MCPCB for modding the GT.

Then drop in this driver and it is good to go for over 9k lumens (I saw over 10k for a few seconds).

Good test, I wanted to do the same thing but was too laze to make up some bypasses.

What happens when you push it to say 10-14A like the XHP70.2 driver?

I guess 7 times as much. But if two carriers are used I assume only 5-7A is run per carrier?

I will check.

Edit: 7A 0.77V drop , 14A 1.55V drop

Thanks, that was the info I wanted, quite useful.

Oh, and if you still have one driver left, yes please :slight_smile:
(PM incoming)

Pm replied, looks like I have 3 left.

That looks like it would be PAINFUL if you try groping around for it in the dark and accidentally grab the wrong thing. :smiling_imp:

How did Nicolaas light and your own light compare at 2 amps djozz?
Nice handle by the way. :+1:

We did not check that at the time because before actually measuring amps I was not aware that the current did not change when double-clicked.

Thanks, I think it is a nice handle too, pretty happy about it especially considering that it took me just 40 minutes to make.

Yes, and there’s more of them in the house, my son is particularly fond of cactuses. You just gave me an argument to sell the flashlight hobby to the family :slight_smile:

Hi,

i did the first steps with my BLF GTA (Giga Thrower aspheric) :crown: Aiming to kick the Optofires ass which uses a 120mm lens as well. The light already fires up, but is bad focussed at the moment. Quick and dirty put together for a first measurement. I measured 1.7 Mcd (8metres) already - without the Wavien Collar.

Greetings

Kenjii

The battle of the throwers! :smiling_imp:

This looks so cool :+1:

Reminds me of the movie War of the Worlds

Been thinking of what kind of mods for this light and started to wonder what kind of IR LEDs are available these days that would work well with the GT.
Anyone else looked into this as of yet? If so, what kind of thought/research have you done? Any IR LEDs compatible with enough output to make it viable?

Hahaha that looks sick :smiley:

Good luck, cause you’re gonna have to compete with my extreme cooling setup :stuck_out_tongue:

Hey TA, sent you a PM about one of your GT XHP-70.2 Drivers, Interested in one!