copper alone is not going to increase lumen output on a cold start. Copper has the same ambient temperature as aluminum. Where it may (in theory) pay off is with higher drive currents, where it should conduct heat away more efficiently than the aluminum heatsink. But even thats debatable with an aluminum pill underneath.
Maybe you could use a thicker gasket in front of the glass to help take up the extra gap form the thinner copper?
I'm after a holster for this flashlight. Something that does not have a bottom in it so the bottom of the battery tube does not sit in anything. Any recomendations?
Is the UltraFire HD2010 600 or 1300 or 390 lumens?
When I google UltraFire HD2010 I some sites advertizing 600 lumens and another sites 1300 lumens and also 390 lumens. Are these the same Ultrafire HD2010s, ignoring color, but using different drivers? Or are they different because of the battery being used (protected/unprotected)?
Those are all the HD2010. Its just www retailers copy-pasting whatever description they can find. I think its somewhere in the 750-900 lumen range. Its slightly brighter than the stanley fatmax on a ceiling bounce and a member on the other forum measured his stanley around 750 Lumens in his sphere.
Actually, now that I think about it, I'm not sure why either but it did come with an o-ring around the pill so, had to report it. It was very thin so I replaced it.
Why would they put an o-ring there? Seems like that would hamper heat trasfer a bit, if anything.
Good question, mine had that too. I dont think it serves any purpose… “maybe” its a way to help snug everything up if a run of lights has a bad tolerance stackup that doesn’t add up?
TangsFire from DD, for <$34. Someone said that, but, if I remember well, drivers were absolutely identical Quite strange.
Does someone have 15% off for TMart?
Yes they are all the same component wise same driver emitter etc… The Internationale Outdoor one had a darker grey color that I liked better than the light gray Tmart one but the Black one looks best in my opinion.