I am thinking about the Osram 50W IRC 64440 and the 65W IRC 64447 in a 4D body, high temp switch with 5x 26500s.
If I have done my numbers right and interpreted the data correctly, I could get 18 to 22 min. runtime from the 65W bulb, with estimated torch lumens (assuming a .65 factor) from around 2200 to 2600. At that level I would be pulling 5.8 to 6.4 amps. CCT should push 3400.
As a comparison, my 50W 64610 setup with 4x AW's original C li-ions in a 3D w/ extender with an AWR hotdriver puts out an estimated 1400 torch lumens. Run times 30 -34 minutes. CCT at or near 3500. A stunning white light.
My 100W 64623 generates about 2400 torch lumens with 8 to 9 minute runtimes. Pulls around 8.7A. CCT at around 3400; also a very bright light. Not as white as the 64610. But, imho, the 64610 is over the top on whiteness.
As I read the tea leaves, overdriving the IRC bulbs to 17+V brings out their hotwire value. At lower voltages, they are too yellow for my tastes. With my current setups, the most voltage I can get to them is in the 14 to 15 area (other than a few seconds after start-up with freshly charged batteries...for whatever reasons I could not get 5 of AW's older C li-ions to light up the IRCs...) and they are still too yellow. But, if my computations using the AWR hotrater formulas and allowing for Luxluthor's recent bulb research and testing, the IRCs overdriven at 17 to 18 volts can achieve color in and around 3400 CCT. That is white and bright.
Plus, instead of foisting 8 to 9 amps on the host, it is more like 6. That gives longer runtimes and less stress on the host.
After I get through my IRCs, I might just have to buy some Osram 50035s and try them, after reading this post:
http://www.candlepowerforums.com/vb/showthread.php?t=227313
Regards to all.
I'll start with the Osram 50035 35watt ministar bulb on 4 x IMR cells
