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

Impressive way you are setting this up TA!! Very impressive compared to previous Group Buys…. :+1:

Google Form submitted for:

  • 1 x BLF GT70
  • 2 x Conversion Kits
  • 2 x Battery Carriers
  • Interested in lens, reflector, & batteries
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Also if Neutral White is between 5000K - 5500K that will be good. Otherwise CW for me.

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From Google form

Neutral white - 4000k - 5500k
Cool White - 5700k and above
Warm White - 3700k and below

That was a mis-understanding. The specs in the OP are in fact approximately what the final numbers should be as delivered from lumintop with the dome on.

In fact I am actually under-rating them since we do not know the exact LED model yet. If for some reason they can not get P2 bin emitters, then the numbers might have to be adjusted. We will know more in a week or 2 when they find some LED options.

I tested a P2 bin 5700k light just yesterday and the numbers posted are a good bit under-rated from what I got to give some wiggle room.

It is a TA V2 driver that replaces the 7135’s with a resistor bank. 7135’s die at 12V and do not like 6V so I have to find another option and after a lot of testing and prototyping this has proved to work very well.

The lumens and throw ratings at this point are only an educated estimate as we have not found the production LED yet but based on my own testing and VOB’s among others, these numbers are well within reason. Worst case we can go with some P2 5700k emitters hit them.

The only real trick is finding a 5000k P2 bin, these are harder to find and I have not tested them yet obviously.

If people would prefer I can under-rate the ratings even more for the time being or just remove them entirely until we find the production LED and get some hard numbers. Although I am pretty sure they will be within ~10% of the numbers I posted if they are P2 binned.

I filled the form for:

1 flashlight
neutral white
with batteries
extra glass plate
no other extras

Signed for 2 conversion kits. Is there a way to see the sign up results in google? IE total number of people etc?

For the Cool LEDs. My 2 cents is to absolutely go as cool as possible. Especially since a de-dome will lower the temp. I cant even tell you how many people have been blowing up my email because they want the laser like effect generated by the cool white.

Fasttech has P2 6000k emitters. The exact emitter I used for my build.
https://www.fasttech.com/products/0/10036285/7908500-cree-xhp70-2-p2-1a-4292lm-6000k-led-emitter

What kind of runtime are we looking at with the 8 x 18650’s? Kinda interested in this if the runtime is good.

Yes, it is all going into a spreadsheet now. When I have some free time I am going to figure out a way to transfer that over to the OP on a semi-regular basis so peopple can keep track of it.

Or I might also get a screen shot of the summery like this, although it doesn’t show the exact numbers:

We are still in the very early stages of looking for LED’s. What options there end up being will really depend on what we can find. I really want to stick with P2 bin so we are kind of at the mercy of what is available.

Interested in one NW. Thanks!

Runtime will depend on how bright you have it set. More output = more power naturally, just no way around that basic rule.

Far as actual runtime, I have not tested it exactly but I did let it run on turbo until LVP to test the thermal properties of the light.

Off the top of my head it was around ~1-1.5 hours till LVP kicked in but I did not time it and it was some time ago so take that with a heaping helping of salt.

In the low modes it would last months.

Wow, that surprises even me! :open_mouth:

Your old throw numbers that must have been with the modded buck driver which was not pushing the emitter as hard.

So with the dome sliced off we are looking at around 1780 meters.

1 x GT Conversion Kit (NW)

1 x Reflector ?
1 x Lens ?

Thanks

Hi. I filled out the form but I checked my email and I don’t see any emails about a list of my answers as the form says I will get? Will it take a while or do I need to fill it out again?

Filled form,
1 Giggle Monster 4000k tint
1 Conversion Kit
1 lens maybe

Correct, I only got the TA prototype drivers for this light a few weeks ago and the production samples tested like 2 weeks ago.

Makes a pretty big difference with ~9-10A vs 6A.

VOB’s numbers line up pretty well with mine as well, so they should be pretty close.

I have not tested a de-domed version of the light with the TA driver yet that I can remember so the only numbers we have there are from VOB. I guessing 750kcd on the low side.

It will be a bit lower then VOB since he was using a 6000k emitter and meter bias causes it to read higher.

The light I tested yesterday was on the new Sphere calibration as well and using a Dr meter for the lux numbers.

Give it a little time and if still nothing then I am guessing that the email address was not correct.

Let me know if this is the case and I will remove the old entry from the list.

Filled the form,

1x conversion kit

interested in lens and reflector

Robert

Thank you sir. That is actually much better than I was expecting. I was thinking maybe 20mins max at full brightness.

I’m just wondering what is the purpose of getting a separate lens?

For spare if you accidentally break it.

I wonder more on a reflector.

At full brightness, that is about right, although it is direct driver so it will be dropping brightness as time goes along.

Remember the above estimate were till LVP, aka the batteries were dead.

Some basic math says we have a total of ~6000ma with both cell carriers filled with 30Q’s.

If we are pulling 9A, then on paper the cells should last around 40 mins.

Although in the real world with the power dropping 20 minutes at turbo before you notice it dimming is a good guess and then keep running for another hour+or so until it hits LVP.