Daaayum, never thought a normal star would be lacking so much heat dissipation… Compared to the copper PCB.
Looks like heat really is everything. I think later I’m going to try get an XML to go to 7 amps. I don’t have a way of testing lumen output yet, but it’ll be fun.
I’m thinking a copper chunk on top of a fanless CPU cooler on top of a flat piece of dry ice. I want to see the limits of an XML. If only I had an integration sphere… so much research would be done :bigsmile:
EDIT: actually scratch that, I don’t have a way of getting controlled currents into LEDs yet. maybe later…
I am currently gathering supplies for mounting a XM-L on a Peltier plate and testing it at currents up to 10 amps. I just haven't gotten a chance to make and calibrate and IS yet. My hope is to do the test sometime around January.
Oh that’s smart, I’ve never thought of using a Peltier plate before. I am really interested to see the results of 10 amps, since up to 6.5 amps on the graph it’s still going up. If you can, also test the SST-90, I want to see what’s the maximum you can push it to while it’s being cooled.
But are peltier plates effective at removing a lot of heat fast? I read that it takes a few minutes to cool down to it’s minimum temperature.
I don't plan on doing a SST-90 as the power supply I have access to only goes goes up to 10 amps. (Or something like that) If not peltier plates then dry ice. :D Either should be able to keep the LEDs at sub zero temps.
Well I still look forward to the 10amp sub zero XML, which of course isn’t possible in a normal flashlight host. Maybe if there was a host which had an inbuilt peltier plate in between the pill and heatsink and driver and heatsink - now that would be pretty nice. But I think peltier plates require a ton of energy, so it won’t happen in the near future
I'm certainly excited to find out what it can do but don't hold your breath. :) I still have to make the IS and figure out the best way to mount the LED, that along with convince them to lend me the power supply. :D
Added a copper ring on top of the DRY carrier to route the battery Negative up there.
Also cut the elephant body down about 1/2 inch.
The switch lit up when the light is on:
Group photo of contestants for the up coming beam shots Battle in the Wood III: The Elephants vs. The Foxes:
All are 3x18650 format except FF3. (left to right FF1 35W HID, Elephant FM3H CBT-90 9A, Elephant FM3V CBT-90 15.5A, Elephant Dragon XML U2 6.5A & FF3 40W HID)
I actually measured the lux but I am keeping it secret until the Elephantr vs. Foxes battle time, but here is a hint, when on Medium mode, it scored 160,000 lux @ 1 meter, can you imagine what’ the lux # on Hi?
The number will be revealed at the night of the shoot out, but I have one more light to make before the shootout, the legendary 2000 lumen FM1909 incan, it pulls 6 Amp at 12V. I’ve never seen any lux numbers except everyone that had one appears to have been blown away, I hope it’ll live up to the hype in a 3” turbo head against these led & HID monsters. I’s been ordered