I present you with Giggles, the most hardcore BLF thrower in the World.

Highest I personally saw was 105C but I am not sure how much I trust my harbor freight IR sensor.

Correct, it was turned sideways in the driver cavity so I could look at the components. Properly screwed down the backside of the PCB did stay cooler but impossible to tell what the components were doing.

I think you were spot on with 5A being a good max current. For those that are willing to take some risks, 6A appears to work ok.

Here is a copy paste from the GT thread about the XHP70.2 death.

After seeing how well the GT took to the XHP70.2 with a sliced dome (over 1600m of throw!) I am sure that there are BIG gains to be had with a flat black or other LED in the GT.

That said I finally got some proper centering rings printed up for the XHP70.2 and did some testing. By defocusing it slightly I was able to eliminate the dark spot! Only lost a little throw as well, it was still over 1600m IIRC. The beam looked better as well.

I took these quick wall shots during my G35 review with the sliced dome and a 3.5mm tall centering ring (vs the factory 2.5mm, I think that 3mm tall could be the sweet spot for a sliced dome XHP70.2).

Closer to what the eye sees (although much brighter, literally painful to look at the reflection):

With the exposure turned down to see the beam a bit better:

Sadly shortly after this I was messing with it some more and something must have landed on the die and caused it to start burning. While trying to fix it I scraped off the Phosphor layer so I now have a mega powered UV light saber (it is super painful to look at, I am scared to turn it on).

So I will be switching to the 80CRI LED next and most likely leaving the dome on it.

Once I get the V1 prototype back I might try another shot as a sliced dome, maybe even an xhp50.2. Or maybe I will try a flat black….

Ok, so today I stole a few minutes to install the XHP70.2 80CRI 4000k in the V2 prototype. HM440H model for anyone interested.

I LOVE THIS LED!

This LED looks SO much better then the 4000k 70CRI that was in it before. It is a lower bin and it lost some output but not as much as I would have thought. Still easily as bright as an XHP70 except without as much of a dark spot and with 80cri.

I tried a few different sized centering rings. Throw readings showed a peak of ~440kcd (vs ~450kcd for the 70cri) with a 2mm centering ring.

Although I am going to print up a new centering ring that is ~4mm tall since manual focusing shows that around there throw only drops to ~430kcd yet the dark spot virtually disappears. WELL worth the trade off.

So what do I end up with?

A ~6000 lumen (possibly more since the throw readings are so close to the 70CRI @ 7000 lumens) 80CRI 4000k 1300m+ throw GT with corona tint shift hardly worse then the stock XHP35.

This light will be keeping this setup for sure, it is fantastic! I would never have guessed that the 80cri version would have this kind of improvement in the tint shift issues. I still don’t know why but it has very little tint shift (not perfect but only slightly worse then the XHP35 that comes stock once focused).

I expect that slicing the dome would have similar results to the 70CRI version with ~1600m+ of throw but I am not willing to risk another $10 LED to find out right now, maybe if I get board or feel lucky later.

Or if someone wants to donate an LED to the cause I can put it on the sphere to test the output and try slicing the dome to see those results as well.

^

The hell is this?!

spam…

“It is designed to provide the highest level of detail”

Re-post: How to deal with trolls :wink:

Hey TA, since you’ve got your production light now, do you think the tint is still rosy? It does seem rosy to me, but everyone perceives things differently.

Is it still putting out 2600 lumen?

It is the same LED so it should be exactly the same as the test LED +/- the binning tolerances (aka, 7% either direction)

The reflector is improved so the cutoff seems sharper, which is nice.

Tint is fantastic, I love it more each time I see it. It has a hint of rose but mostly just looks like a small sun.

It should be around ~2500-2600 lumens at the emitter. People have to remember that getting a reading in the light is very hard, if the entire reflector is not in the sphere, the reading will be much lower as quite a bit of the beam is along the outside edge. Even a ceiling bounce can be skewed as they are not usually setup for mega throwers like this.

After the reflector and lens losses I would expect the OTF lumens to be around ~2200 if I had to guess.

I’m really happy with this tint as well. I’m glad you settled on it. I’ve been comparing my other modded throwers with my new GT. The thing that stands out the most for me is the horrible tint they have because they are all dedomed. Everything seems monotone and flat compared to the GT. Tint was a sacrifice I made for maximum throw. But with giggles I get the farthest throw and a great tint to boot. You guys really hit this one out of the park.

Thanks TA.

Glad to hear that, a lot worried about 4000k being too warm but I had a feeling most would like it once they saw it in person. Those that dont, are welcome to change it naturally.

Indeed, there was no way this light was going to use a de-domed emitter for just that reason. You can swap one in and get close to 2mcd by some estimates but it is not worth the loss in tint for me.

Although I have been working with DEL to put together a parts list that would allow driving a 3V LED like the Flat black with up to ~5A by swapping a few components on the stock driver.

So the 91mOhmF shown on this driver is .091Ohm resistance?

Looks good, mine showed 2.45A at the emitter tested through an 18GA loop at the MCPCB with a UniT clamp meter.

Edit: Looks like the large MOSFET is a different value, if one were going to the 12V XHP-70.2 would a change here be beneficial?

I have been discussing upgraded components with DEL. I ordered them today actually. We will post them once tested.

Although in stock form the driver is good for 5A at 12V (aka, same as 10A at 6v). I have my xhp70.2 setup for 6A right now (.040 ohm 2512 resistor) and it is working good so far but the driver runs hot.

The FET that is on it is hard to beat, DEL did find something that is possibly a bit better when combined with some other changes though. The goal is to allow ~6A reliably with 8A bursts. More then this would need an FET driver.

Ok, yeah, I researched that Alpha/Omega MOSFET and it appears the specs are on the D417 model number, the lower numbers are apparently a batch number. :wink: Specs on it look good at our voltages, stepping down to 6V we could probably find better but at 12V this one is pretty nice.

I was just wondering because I still have some Vishay-Dale 70N07 from when Comfychair first started the FET direct drive craze, this is (I think) an N channel MOSFET though, so it wouldn’t work here.

(I know, right? I’ve been building direct drive driver’s since we were flipping the 70N07 upside down on a stripped Qlite and Tombstoning a resistor under the gate leg. We’ve come a long way, baby, to get where we got to Today!)

Edit: I know, I’m old, they don’t advertise Virginia Slims to women on the TV anymore.

Yeah, the FET for a buck driver plays by very different rules compared to the normal FET drivers we build around here. Switching losses make up as much or more then the resistance losses in this case.

Basically for the stock buck setup (which I prefer since it offers at least some level of regulation) 6-8A is about the best we can hope for with this driver. Although that is still well over 8000 lumens and enough to max out the xhp70.2 before massive diminishing returns.

Hi

I am searching to buy a giggle flash light does anyone know maybe where i can get one my gmail is

Serfonteinjuandre@gmail.com please message me if you help me thx

Just go to this thread and ask to be put on the list for a light. They will add you.

I like this product

Texas Ace - Do you have any outdoor beamshots with XHP 70.2 on turbo?

I thought for sure he had those beamshots on this thread, but I think he only posted them in the main GT thread. Here is that post.