Wayne,
Thanks for the offer, but if I need temp measurements I'm luky to have a spare temp sensor on my computer's motherboard and just run the thermister to the item to be tested and monitor on the computer screen. This keeps the meter free to monitor current at the same time.
For this particular mod, I just started out at low current (250ma) and kept raising it little by little and checking for heat every 15 min, then raise current some more. I haven't even bothered to hook up the probe beacuse I can barely feel any warmth using my lip as a sensor.
The orginal prototype of this mod with a 'puke green' Luxeon was made with a no resistor. A second I made, has a two ohm resistor, that light has been running for 26 hours straight on time now, and still not even warm. I know it's had to dim down some, but can't really tell yet.
Today I'll put together another 3D mod using the wht/blu Luxeon I pulled out of one of my DB AAA mods. I mounted it to the heatsink last night and just ran it for 30min after letting the epoxy set a couple hours, and it didn't get warm either with the heatsink sitting on an alum cookie sheet. Now that the epox has setup enough, I'll do some long term testing with it in the flashlight.
Too bad the current Luxeon's are such a crappy color, I've got the Fire Dept and otrher people pestering me for flashlights, but nobody is very trilled with the 'jolly green giants' of Luxeons.
So, this, and many other projects will come to a screething halt in the next few days, unless somebody other than Future can be found as a source of Luxeons.
