Lumintop GT4

Hi TA! Do you know if anyone converted the GT battery carrier(s) to 4P, if so, any tips or pics?

I got a spare SBT90.2 and think'n where best to use it. A GT, of course, would be ideal, but also I still have an old BOSS1 (4P of 26650's, big reflector).

I don’t think anyone has actually converted the carriers yet but it should not be that hard. Could make some PCB’s on oshpark that would work or the quicker option is just to do the old cut traces and rebuild them with wire thing. It would take some work but totally possible.

Could you just use the stock battery carriers if you wire the 4 3v leds in series?

K, thanx. I'll look into it. Lately it takes me forever to do much of anything. Still working on a 1504 pill to fit a 20 mm MCPCB of the SBT90.2, and I do have an SBT90.2 sitting in a spare pill for the Brynte B158, but the stupid spare pill fits an 18 mm driver, not 17 mm like the stock B158 pills :FACEPALM:

Dunno why it was changed like that. Not sure I can dremel down a 20 mm driver to 18, because based on my measurements, it would totally eliminate the ground ring on the bottom side, preventing good contact to the brass pill. Probably need to move it to a stock B158 pill, and drill out the LED wire holes again. The holes are too close in for the 20 mm MCPCB.

Well for me, the GT4 is vapor. I actually have a couple spare GT's - they are real, so trying to make do with what I got.

Yes, that is the plan for the GT4 and why I think the GT4 is a better candidate then the GT for the SBT-90. (they took my suggestion and started working on a GT with the SBT-90 at one point).

For Tom like he said, he only has a GT to work with.

This light would be the 1st of its kind with 4 SBT-90.2s in it. It would be a beast. So far from what TA has said, the passive cooling on the gt4 could run 4 xhp70.2s until cells depleted. I don’t know what the heat difference is between xhp70.2s and SBT-90.2s but I would think it would give a good runtime given the amount of power, while also not sounding like a blowdryer. And with 4 emitters and deeper reflectors, it would also outthrow the Imalent R90ts as well would it not?

Mind….BLOWN
dang dang how cool

The Miller is back, nice to see you here again :wink:

How did I miss this thread ? awesome light.

Eta? Updates? Anything?

Nothing, I am guessing they are working on other things for the holidays and I would not expect any updates until next year at the earliest at this point.

they are preparing for production

of course now we want to know more. :sunglasses:

I also just get bits :(

Have they confirmed they are going with the XHP70.2 or is there a chance they will go with the SBT-90.2?

I wonder what will happen with this project now that it’s been announced Lumintop will bring the original Blf Gt back with the upgraded sbt-90.2 led?

I’d like to see if proceed as planned because they are two completely different lights with two completely different purposes.

Now, if they replace the four 70.2’s with four 90.2’s, then I wouldn’t mind so much. That would be a mind blowing light.

This is the idea I pitched to start with then they came back months later with it in the GT instead. Looks like the “gt90” is what they are focusing on for the foreseeable future.

It’s probably cheaper, easier, and faster to put the 90.2 in the already in production GT body than it is to design and setup manufacturing for the new GT4 body. A light that throws 1Km+ is neat, but I live in a city so it’s not something I have much use for, the floodier GT4 would offer a more useful (for me) balance of flood and throw.