The BLF GT70 "Giggle Monster" is here! 7,500lumens, 1,500m throw! Group buy Closed!

Woah that’s impressive. Im glad to know that my hand will melt before any harm comes to my babies… lol.

So let me get this straight. All these flashlights that have a thermal stepdown protection, they stepdown to protect my hands? Not the light itself?

I run blf gt70 turbo mode for 10 minutes… it’s get warm to medium hot… what a great heatsink… no sign of step down according from my eyes.

IDK, maybe yes? If you get burned you might sue the company. They don’t want that or the bad reputation of burning people.

It all depends on the light as well. Small 16340 lights that do 900 lumen can probably burn up the led due to the lack of surface area to dissipate heat. The led is always hotter than the outer surface. I’ve heard of lights getting so hot that the solder under the LED would get soft and then a sideways bump would knock the LED right off of the mcpcb.

So having a thermal stepdown is always good for high powered lights. It’s still not mandatory, though. My L6 is over 130 watts (17.6A) and it doesn’t even have a thermal stepdown (old Narsil verion). I turn it down when I feel it’s hot enough, so no big deal.

For most of them, yes, that is correct.

Holy crap 130w. Maybe I will get close in mine. Just ordered a driver from Lexel,although he’s still playing catch-up with his orders. IDK when he will be able to ship it to me.

Ordered the NW conversion kit.

Hmmm. Interesting. Changed my perspective on how I use my lights.

I may have missed it in the thread, but is there a way to order just the carriers? I see that they can be ordered with the conversion kit, but can they be ordered by themselves? Thanks for the help.

you can order just carriers. The listing for them is at the conversion kits. That made a little confusion.
You have 3 option there.
CW kit
NW kit
Carriers

Ordered NW conversion kit

Two questions from my side:

  1. If companies love making money, and us hobbyists love spending money, why don’t Lumintop just produce an extended 3 carrier battery tube, similar to how they have a shorty 1 carrier tube? That way there is no couplers and a single nice elegant 3 carrier battery tube? I for one would rather order a 3x carrier tube than ordering a coupler and a shorty tube
  2. How optimal is all the carrier springs, wires from driver to LED, and thermal paste under the LED. Will there be reasonable gains by bypassing all springs, replacing the wires from driver to LED with thicker wires, and replacing the thermal paste with something like Arctic Silver 5? Also, how thick is the LED shelf, and is there room to add some additional copper or aluminium between the LED shelf and driver?
  1. Companies will not make an item if they think only a handful of people will buy it. They need to make and sale large batches to cover the cost.
  2. It’s all very optimal. I don’t think you can get much more out of it. The carrier springs are already doubled to reduce resistance. The shelf is quite thick, I don’t know the exact number. The original GT had 20ga wires to the led so this one has at least that. They may have gone bigger, but I’m not sure.

With 4 batteries the most amps you might see is 8A to 10A per battery. With 8 batteries this drops to 4A to 5A per battery.

There’s only one thing I can think of that might get a little gain and that is bypassing the postive carrier spring under the button. You may or may not see an increase.

It’s built really well in stock form. I don’t know if anyone has bothered to try to beef it up.

Texas_Ace can probably go into some more detail later today.

You can bypass the springs if you really want but it is at your own risk.

1: Jason explained it pretty well, for a company like lumintop to make a 3 carrier battery tube they would need to make a batch of at least 100. Unless they think they can sell all of those it would be silly to make them at all. I can’t blame them for not making it, there was vocal interest in the short tubes (for reasons I still can’t understand) so they took a risk and made a batch of them and lucked out and sold them all.

The longer tubes though have only had very minor interest in the big picture. Selling 100 of them is anything but certain. So I have not pushed it, I have to apply business sense to the things I request and I can’t promise them they will sell an entire batch of long tubes.

If someone could show enough interest that 100+ tubes + carriers would sell at a probable price of ~$30+, then I could talk to them about it but I find this unlikely.

2: We are already driving the XHP70.2 quite hard as it is, more power will only give minor gains in output and a lot more stress on the LED. So the chances of killing the LED go up a lot. Personally I just leave my springs stock.

I will try spring bypass if the output is under 8000 lumens. But if it is above I will keep stock.

Texas_Ace, I think the interest on the shorty tube, at least for me, was more comical than practical. When I saw the picture of the GT with the shorty tube, I just had to laugh at how ridiculous and funny it looked, so I got it. :smiley:
Now, the longer tube has the practicality of longer run-time, and for me, I like the optional position for carrying the GT over the shoulder, with the tube resting on the shoulder while hiking or long walks. I’m sure it would also make one grin.

lol, I can understand the comical side of the short tube.

The long tube is the one I actually would of backed myself, while it would make the light too heavy to carry without a strap, it would be practical with a strap.

Like I said, if the interest was shown for a 3 carrier tube at the $30-$40 price point (seeing as it must include a carrier as well), I bet we could get them made.

It would need at the very least 100 interested parties though.

The short tubes were much less of a risk since they were only $10, a lot of people would buy them just because they were so cheap and only use them once. Not so easy with a $30+ battery tube.

Are they shipping the lights to the US in batches ?
I ordered and paid for my GT70 on Aug 30
(Order: #900112870)
I still have not seen it or been updated on the shipping time

They do ship in batches but it is odd that it has taken so long for yours. I would contact Leo@lumintop.com and check on the status.

will do, thanks TA