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

[lawallac]

I have been using the short tubes on my GTs. Those of us with short and long tubes could make use of spare parts if we were able to buy:
1.Complete head
2.Tailcap
3. Battery Carrier

I would imagine quite a few of us have GTs already with both battery configurations and would like to have a lower cost alternative to make 2 complete lights.

[JasonWW]

@kaybi

Ok, just a few questions:

The throw claimed is with the de-domed LED, but the led will come dome-on, as I understand it. What would be the throw of the GT70 stock, as it comes from the factory?

The driver used would be fet+1+15, instead of the original buck driver. Is that correct?

Thanks.

FWIW, I think the claimed throw, candela, and lumens should be given as it comes from the factory, not user-modded. Making a note of the expected throw after dedoming is great, but is not how the light comes stock.

Keep in mind that Lumintop has not built this light yet, so there’s not even a prototype to get measurements from (AFAIK). There are only the several modified GT’s that TA has built and measured.

I have asked TA what specs we should post for the dome-on led. When he wakes up, this info will be updated along with a driver amp draw. It currently says 2.5A @ 12v, but that is a carry over from the original GT spec. The new version should be closer to 7A to 9A range. Plus it might vary based on whether one or two carriers are used.

Before he sliced the dome off he was getting around 1100m to 1200m throw iirc. I can’t remember if that was with all springs bypassed or not.

Dont worry, these specs will be updated soon.

[Kendo]

Form filled out and submitted.

[JasonWW]

@LichtAn

Would be cool if they would make a dedome option from factory. I mean Acebeam also does it on the K65.

Here is what TA said about it on another thread.

@Texas_Ace

@JasonWW

If they do a driver and emitter, then it really would be an easy swap. Now I am getting interested. I wonder if they can slice the dome too.

I am not sure I would trust them to slice the dome. It is not something easily done on a production line.

It is a simple mod for people to do themselves, though.

[quijibo]

I’d like to go in for two:

one neutral white
one cool white (could not indicate separate color temp on form)
Also 4x extra carriers
No lenses, conversion kits, or reflectors.

Thanks!

[JasonWW]

@lawallac

I have been using the short tubes on my GTs. Those of us with short and long tubes could make use of spare parts if we were able to buy:
1.Complete head
2.Tailcap
3. Battery Carrier

I would imagine quite a few of us have GTs already with both battery configurations and would like to have a lower cost alternative to make 2 complete lights.

A complete head could very well cost 90% of the total lights price. So would you really save any money?

I don’t know the exact number but the cost of the head is by far the most expensive part.

[Satisfaction]

I am in for 1
NW
Submitted

[avani733]

1 x BLF GT70, CW

[BobTB]

Filled out the form for 1 conversion kit, thanks TA.

[Glov]

Filled the form, in for:
1x GT70 NW
1x conversion kit NW
1x spare lens
8x 30Q cells

[Texas_Ace]

@RobertB

Lumintop should make just a complete head available so we can use our existing carriers and tubes. That would help keep the cost down a bit.

Sadly the savings of leaving out the battery tube and carriers would be minimal, maybe $30, the bulk of the cost is the head so it doesn’t make a lot of sense to sell it separately.

Remember that both the head and the reflector start out as big solid hunks of aluminum, that is a lot of cost and machine work.

[Texas_Ace]

@JasonWW

@RobertB

Lumintop should make just a complete head available so we can use our existing carriers and tubes. That would help keep the cost down a bit.

I was thinking of just the lower head, the light engine. Then your not paying for the expensive reflector, etc… and the shipping box would be much smaller and lighter.

The issue here is that many people have a big problem opening up the GT, so it could lead to more issues then it fixes. Otherwise this is what would of been offered instead of the kit.

[Texas_Ace]

@JasonWW

TA, here are a couple of reflector pictures that you can use in the Google form.
.

Thanks, I will update that in a little bit

[teacher]

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
  …………

Also if Neutral White is between 5000K - 5500K that will be good. Otherwise CW for me.

…………………………………………
From Google form

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

[Texas_Ace]

@kaybi

Ok, just a few questions:

The throw claimed is with the de-domed LED, but the led will come dome-on, as I understand it. What would be the throw of the GT70 stock, as it comes from the factory?

The driver used would be fet+1+15, instead of the original buck driver. Is that correct?

Thanks.

FWIW, I think the claimed throw, candela, and lumens should be given as it comes from the factory, not user-modded. Making a note of the expected throw after dedoming is great, but is not how the light comes stock.

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.

[Texas_Ace]

@LichtAn

Interested in NW complete flashlight. But only if it delivers the promised lumen. This thing needs to be insane! :smiling_imp:

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.

[Turby3Pots]

I filled the form for:

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

[vestureofblood]

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

[ImagioX1]

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

[Texas_Ace]

@vestureofblood

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

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.