Hi guys,
If you have a SF L4 or KL4 and haven't gone to a two stage switch for it yet, what's wrong with you!!! /ubbthreads/images/graemlins/nana.gif
Just joking! Anyway, the L4 is a great flood or wall of light as many have witnesed and testified. It is a real useful packaging of a 5W LED. For me its only real drawback is that it can get pretty hot in long play and more often than not, it provides more light than I want in a task oriented flood beam. I just did a test with a L4 I have that measures 658 lux on high at one meter. With a 22 ohm two tail switch, the low level, for 9 hours of play, was about 1/10 of this which is ideal for what I like to see in a low VS high output relationship. I did a runtime on this because I just love doing runtimes! /ubbthreads/images/graemlins/banghead.gif
Now the first four hours of the graph should be dropped until the curve joins. This is because there was an ambient light of about 10 lux until I shut down the shop for the night, four hours into the runtime test.
Below is a photo of L4's. On top is the standard McE2S two sttage switch and then the stock Z57 and at the bottom the McE2S-T or Trim tail cap is shown.
If you have a SF L4 or KL4 and haven't gone to a two stage switch for it yet, what's wrong with you!!! /ubbthreads/images/graemlins/nana.gif
Just joking! Anyway, the L4 is a great flood or wall of light as many have witnesed and testified. It is a real useful packaging of a 5W LED. For me its only real drawback is that it can get pretty hot in long play and more often than not, it provides more light than I want in a task oriented flood beam. I just did a test with a L4 I have that measures 658 lux on high at one meter. With a 22 ohm two tail switch, the low level, for 9 hours of play, was about 1/10 of this which is ideal for what I like to see in a low VS high output relationship. I did a runtime on this because I just love doing runtimes! /ubbthreads/images/graemlins/banghead.gif
Now the first four hours of the graph should be dropped until the curve joins. This is because there was an ambient light of about 10 lux until I shut down the shop for the night, four hours into the runtime test.
Below is a photo of L4's. On top is the standard McE2S two sttage switch and then the stock Z57 and at the bottom the McE2S-T or Trim tail cap is shown.