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

I did, they seem to be about ~4% higher on average then the V1 BUT as I said before my readings can vary by +/-10% depending on the day, humidity ect. Which is why I don’t post the actual numbers.

I also can’t get good readings at distance due to these factors, the calculated CD goes down as I move back further.

Although I might take some longer range readings again now that I have this warmer LED to see if it fairs any better.

Once we are done with V2 for the approval process I plan to send it to VOB to do some direct comparisons with the V1 that he still has.

The farther back you go the more realistic the numbers become, I don’t think any of us lives in a vacuum :stuck_out_tongue:

Yes but the calculated numbers on a light like this should at least maintain past ~~5-7M.

Ideal numbers should come at around 20m+ as they did in VOB’s test, not the case where I live. They would start dropping after 5-7m.

Also if I took them outside to get longer range they would drop even more.

Basically I just don’t have the right conditions for getting good throw numbers, too much humidity and city dirt in the air to allow for that.

You’re talking about the candela dropping, not the lux dropping, right?
They shouldn’t maintain past 7m, that would only be in ideal conditions in a vacuum.
The farther you go the more atmosphere there is and the more accurate your values get.

Hey! I thought you were on my side!

I have access to a glass bead booth as well. With any luck, there will be no branding or markings on the host to contend with.

Can you explain why the drivers look so different?

Proto 1:

Proto 2:

If the positive voltage goes through the center spring and post, how does the negative voltage get to the driver on Proto 2 since it’s missing the bigger ring on the driver?

I remember you saying the new battery carriers are now all metal. We’re the early versions plastic on the ends? Is that why the driver needed the extra bigger ring?

The new carriers do seem completely metal on the ends. Do the Proto 2 lights now conduct the negative voltage through the driver hold down ring?

Correct, the new carriers are all metal and use the ends of the carrier itself to connect the ground, this removes the several small springs that had a lot of resistance in the prior design and makes it much less complicated.

I have been working on an XHP70 version of Giggles for awhile now. I first tried a normal XHP70 but it has a bad cross in the middle of the beam and the performance was just ok. Not worth keeping in the light it was so ugly.

I just got my first xhp70.2 thanks to Lumintop and here are the results:

I just posted the XHP70.2 P2 4000k test here: XHP70.2 P2 4000k Output test by Texas_Ace - it's over 9000!! lumens and still going strong!

It was so powerful that for the first time my my CPU heatsink could not keep up. The results above ~18A I think could have been slightly better with a better heat sink.

I also played with the focus some as well and it can be improved, although the prototype mcpcb needs a wire running on the surface and that keeps me from getting the reflector any lower. In testing with the external LED I think the beam would be improved some by lowering the reflector a bit more.

That said even with the reflector setup like it is now, it is still perfectly usable. The middle of the hotspot is just a bit darker at range.

Now for what ya’ll really want to know, what are the numbers?

As you can see from the above thread, the lumen output at 5A is just over 7,000 lumens! (more on a cold start)

I have a 40mohm sense in it right now that gives me a max of 6A in turbo and 4.8A at the top of the ramp. At 6A it is almost 8000 lumens!

The driver does get properly hot at 6A. 5A looks like it will be ok long term though. he nice thing is that the Narsil thermal regulation can act as a safety for the driver in this situation if the thermal calibration is not reset too high.

Measured throw in my less then ideal Texas conditions are about 1250m of throw at 5A and a bit over 1300m at 6A.

Although that could change with final focusing.

Overall, I REALLY like the xhp70.2 in the GT. I will try to get some beamshots when I have some free time but it basically just looks like a larger version of the stock xhp35 beamshot at close range.

At longer range it does have a bit of a dark spot in the middle of the hotspot but not enough for me to not use it. Some focusing might improve that as well, gonna have to wait until dark to see what the changes I made today did.

I will be leaving the prototype with the XHP70.2 for sure. Although I also have an 80CRI version sitting here that I think I will try out.

As far as the parts needed, it would be much easier if lumintop releases a pre-made mcpcb or if we make some ourselves.

Right now it is using a modded version of the SD75 mcpcb, others have mentioned that maxtorch might have a better mcpcb option.

This is the design I sent to lumintop awhile back:

Then you naturally need the XHP70.2 LED. RMM has some Cree XHP70.2 P2 4000K on DTP MCPCB

And the sense resistor, a R050 2512 will put you just under 5A in turbo and be a little easier on the driver. An R047 will put you right at 5A but is a little harder to find.

I’ve always had a hard time calculating parallel resistor values, but am I right to think that 2 R100 stacked would give me the same value?

I’ve got R080, R100 and R120 on hand.

How much is this thing gonna cost? It’s a pretty insane light!

The GT group buy is still open. If you sign up it will cost $155 including shipping. The retail price will be about $250.

Hi guys, I want 1. The information on group buy is too extensive. Is there a way where you pay down payment via paypal invoice and pay balance once product is ready for delivery?

I have paypal ready, but I do not log on here much so I will not be able to see all updates.

Please make it a little simpler.

Thanks.

Cool thank for the heads up!

With the now updated China paypal fees (vs US fees we calculated at first) the total came to $157 and change IIRC, otherwise that is correct.

These are much larger then the normal 1206 sense resistor. These are 2512 (so they are as wide as the 1206 are long).

That said you are correct, you can stack to R100 to get an R050.

Simply go to the thread in the above link and ask to be added to the list. You will be added to the list on the next update (CoyoteHawk is keeping an updated list at the moment).

You will be in the 3rd batch of lights that should ship early next year. You will get a PM with the payment details here on the site when it is time to pay.

Setup your email address on your BLF account to be notified when the PM arrives.

Dang, the ones I have are 1206. I thought they were bigger.

It seems like I saw a picture of the driver circuit somewhere, but can’t find it. Do you have any pics?

Del posted several somewhere in the GT thread. I have a few of the back side of the driver, not sure if I ever took some of the front.

Here is the driver. That sense resistor reminds me of clown shoes. Rediculously large! Lol

Full size picture.

Here is the thread post with the picture in it.

.