Another thing about the new Tactical light. As you may have remembered from around January, the Tactical had 4 light settings in the rotation of the dial. Now, instead of there being 2 light settings in the first half of the rotation going clockwise , the light will ramp in brightness like a standard Rotary except there are 12 light settings in the first half that are double steps. Just another thing Henry did to improve it since January.
When the lights are calibrated, all levels are calibrated. It's a pretty simple process, or I wouldn't be doing it, as Henry made the calibration machine (not a simple process). I can see on the calibrator what each of the first 6 light levels are on each light, and it gives me an idea of how efficient each light is at each one of those levels. (I know. I am using "each" too much. Try to just ignore that.)
As an example, let's take a 170 Neutral. I harness that head into the calibrator and hit start(well, I actually have to tell the calibrator what type of light it's going to be, what LED it is, what color the bezel is (I'm not kidding) and how many max lumens I want the light to hit, the calibrator then ramps power up giving the light the prescribed amount of juice (33% lime 66% rum... oops. Off topic) and it measures the lumen output and temperature of the head. Now, many of the 170 Neutral lights would ramp right up to a lumen rating of 185 or higher, and some would go to 172, etc. etc. The calibrator then adjusts the power for that level so it hits 170. It goes through all the levels of the light doing the same thing, adjusting and tweaking the little flashlight brain for each level and the current needed at that level. Several factors can effect the output such as a black vs. silver bezel, a different reflector, and just a stubborn LED that wasn't paying attention in school. If a light does not make "the grade", generally the first thing we do is try a new reflector, and try again. If it still doesn't make the grade after that, the light is sent to the corner for a time out then sent to the principles office being expelled from the group. It might get a LEDbotomy as well having it's current LED scrambled and a new one put in to try again later.
It's quite an interesting process (well, not so much after doing it several hundred times). It is surprising the amount of variation in the same bin of LEDs. Some of the neutral 170's could hit 200 lumens, but are calibrated to 170, thus using less power at 170 and running longer i.e. a much more efficient LED and flashlight. Now, most wouldn't make that 200 lumen output on the Neutral, so 170 is where Henry has set it. Same with each of the various lights you get from HDS. It's balancing act between max lumens and fall out rate for a particular LED.