My cree 27 mm x 3 mod in cheap body

Krit

Enlightened
Joined
Dec 4, 2003
Messages
751
Location
Thailand
I found this body (center) come with more than 100 led bulb.

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About 20$ is pretty with it's shape.

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Use AAA*4 battery which can accept 1C battery perfectly fit.
 
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I put Cree reflect 27 mm kit from DealEX and drive each with 800 mA step down circuit.

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I put li ion r123a x 2 and it suck about 1.36 A from fresh charged battery. I also make it easy for recharge it with DC 7.2 V charger.

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Throw

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Compare to another light in same distance.

Golston mod with SSC emitter drive with DB917 .

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Ultrafire with cree.

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Sawadee Krup Khun Krit,

Nice mod, those beamshots are an excellent bargain for your Baht!

I like the throw made possible by the oversized head and how neatly everything fits inside your light.

Does it get very hot with each XR-E running at 800mA?

Keep up the good work!


Derek
 
Sawadee Krup Khun Mosport (Khun Derek).

After I turn on for 3 minutes is getting warm. The head is quite good for heat transfer. At first, I try to put tiny fan from computer VGA card under heat plate, there is enough room for it. But I think that I will use it for intermittant use only.
 
Did You make something to ease placing of reflectors?

The one time I used the 27, it was very hard for me, as they have to be placed both in center and in height.
 
This body is perfect fit with 3 x 27mm reflector. I just make new heat plate for horizontal adjustment only.

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I cut new front glass lens to replace stock plastic lens.
 
I'm really tempted to do this mod myself, I love the way multi cree lights look! Is this the host you used for this mod? I'm checking because it's a 68 led light, not over a 100 leds like your startpost said, but it sure looks alot like it.

Another question, you mentioned getting 2x123 batteries in there... could you check if 1 18650 wil also fit and power up the 3 leds with the used circuits? That would be great. Also, is that huge heatsink you posted above custom made? Or is it a part that's found inside the flashlight?

Thanx! :candle:
 
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I'm really tempted to do this mod myself, I love the way multi cree lights look! Is this the host you used for this mod? I'm checking because it's a 68 led light, not over a 100 leds like your startpost said, but it sure looks alot like it.

Another question, you mentioned getting 2x123 batteries in there... could you check if 1 18650 wil also fit and power up the 3 leds with the used circuits? That would be great. Also, is that huge heatsink you posted above custom made? Or is it a part that's found inside the flashlight?

Thanx! :candle:
The circuits are buck, or voltage step-down. So the 18650 will probably work initially, but fall out of regulation and end up with gradual dimming throughout the runtime. IMHO if a "C" battery fits, then another option may be to use a LiIon "C" battery. That has even greater capacity than a 18650, and would probalby perform better (not as much sag from the load of the three LEDs). The C would have more than double the capacity of 2 RCR123s.
 
I understand a c size li-ion will fit but I have about 14 18650's around, so If I'm gonna buy a mod host it should be able to fit 18650's.:eek:
 
I'm really tempted to do this mod myself, I love the way multi cree lights look! Is this the host you used for this mod? I'm checking because it's a 68 led light, not over a 100 leds like your startpost said, but it sure looks alot like it.

Another question, you mentioned getting 2x123 batteries in there... could you check if 1 18650 wil also fit and power up the 3 leds with the used circuits? That would be great. Also, is that huge heatsink you posted above custom made? Or is it a part that's found inside the flashlight?

Thanx! :candle:

Sorry for miss some data, it is 68 led light that you mention. It's fit with li ion C size but I not sure when circuit work in bug mode. This circuit work 3.6-9.0 volt and go to DD when Vin below Vf. I use 2xr123a because I use for short time only and easy to reachrge inside body.
 
KnOeFz, I cut aluminium plate to a circle heat sink. Thinkness is around 2 mm. It can act very good for heat transfer.

The stock front lens is plastic poor for transparent. I have more custom 2 mm thick glass lens to fit this body. Please tell me if someone want it for mod. Budget include post cost is about 5$.

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Are you really able to cut custom size glass lenses ?

Are you able to do 21.50mm diameter ? I'm interested in 2 pieces...

BTW, great project !!
 

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