Just a quickie HD2010 mod - Beam Shots are up

Flashlight Modding and DIY Parts
1

I'm sure everyone knows what a HD2010 is.

qa1

I'm not going into a big build thread. I just wanted to describe the results, as I was impressed with them.

hd1a

I bored out the pill a little and slid in some copper pipe and copper discs to make a better heat sink. I added an XP-G2 led to a 20mm copper star and soldered it all together. It was a press fit into the pill. I am driving it with a FT NANJG cheapie clone driver with 12x7135 chips (the 380mA variety), so I have about 4.5 amps available to the led.

Since it's a single cell light, I know I'm not going to see 4.5 amps, even with a good 26650, because to get that high of an amp draw, I would have to maintain well over 4 volts constantly, so I was shooting for 4 amps if possible. I did the copper braid mod on both the driver spring and the tail cap spring.

My results:

XP-G2/Panasonic 10A 18650/4.5A driver - 4 Amps and 53,600 Lux @ 1 meter

I did get a new one of the 50 amp Sony 26650 batteries, but I still get 4 amps max, so I figure that's the max for this setup.

Man, this thing is bright!

bs1a

1/30th of a second, from about 5 feet away.

I was just amazed the XP-G2 would take 4 amps, even with the copper.

I will do some beam shots tonight, but I know I can't get enough open room to do the light justice.

hd32

hd33

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2

But I think you prefer flooders so you’re likely happy enough with it as is. :bigsmile:

3

That’s pretty much exactly like mine, I might have a bit more copper and mine’s seeing 4.28A on a 5 mode E1320 driver but yeah, it’s bright and I love it! Hit’s a white barn 610 yards away with visible light. :slight_smile:

4

No pickys here either. :_( All good now. :slight_smile: this is one of my favorite lights in 2 x 26650 mode. There tough little leds the XPG-2. Looking forward to your night shots.

5

Beam Shots are up

6

Wow, awesome!

7

Geeeeze! I thought I seen a bright glow in the east a little while ago!!! I thought it was a little quick for sunrise!!

AND... NO! Not everyone knew what a HD2010 was!!! I just build lights and chop up things!!! I don't get out much!!

Nice work!! Dan.

8

Sell it?! I’m game!

9

Nice improvement I would say. :slight_smile:

10

Actually, it will be a Xmas giveaway. This light, along with several others, were sent to me by another member. Since they were given freely and since I don’t keep lights, I will save them and mod them for Xmas giveaways here at BLF.

11

What an awesome torch to win, I don’t even own a thrower. If you decide to sell after all PM me.

12

Yes, I was pleasantly surprised. I really didn’t think the XP-G2 would take the amps. It just looks so small and then you turn it on and you get the OMG beam.Smile

13

nice mod.

14

Sweet light. How about a photo or two of the pill mod?

15

Thanks, I just don’t want to tear it apart again. Since it’s a press fit into the pill, there’s nothing to see except the led/star.

16

OK, I see.

Noob question: Might the system be running correctly, i.e. with the power limited by the driver components you selected, and not the other potential resistance points?

I ask because I read this review by horst.the.worst @FastTech:

"Real world current flow is ~10% less than rated (same with the 380mA binned, btw), depending on the environmental circuitry, so don't expect it to give an increase of exactly 350mA when piggybacked onto an AMC7135 based driver. ;)


Some useful informations about the AMC7135 can be found here:
https://budgetlightforum.com/t/-/10320#new "

http://www.fasttech.com/reviews/1124300/262

So, 12 x 380mA= 4560mA

4560mA-10%= 4104mA

Which is close to your observed current. Maybe you would just need a couple of more 7135's to reach 4.5A. Maybe. I'm too noobish to say with certainty.

17

Well, that's a factor, but also there's the fact that as the amperage goes up, the voltage goes up too. Something about Ohms Law. I don't have a clue, but I have read something about it and over 4 amps on a XP-G2 is close to or over 4 volts, (I believe). A single cell is going to have voltage sag almost immediately from the load, so the combination of everything has something to do with it. I'm quite satisfied with 4 amps.

18

I see. So, if the LED's Vf = Vsupply and self-limits current draw, then why bother with a driver at all? I didn't see any mention of lower modes, and who would want them on this light?

IIRC from physics 101 the diode is just an N-P junction, the N side having extra electrons and the P side having a deficit of electrons. As an applied current through the junction rises the empty orbitals in the P side are increasingly filled in due to the large number of electron passing through. I think that might be what's causing Vf to increase. But my memory of that stuff is fading.

19

Hey now, if I still have to pay the same amount for a driver, I'll take it with a moonlight mode too.

Try a contact board or modded driver with pass through for real direct drive and let us know how it goes. Solder the neg lead to the pill and solder the positive lead to the tip of the spring too. I might try it, but it won't be any time soon.