looking for some input

[SFG2Lman]

well, i finally decided on what i want my first mod to be. I want to put the color MC-E into a P60 module. I want to be able to quickly and easily choose my color without cycling through all the other colors, and i am not sure what kind of switching mechanism this would require. I plan on using the drop-in in a 6P with an 18650, fortunately for me, every die requires 700ma so i won't need multiple drivers or resistors. My plan is to make a VERY poor man's kroma, but i can't seem to think of a way to light one die without cycling through the rest, do they make selector ring heads for a 6P?

I understand the heat problem with an MC-E in a P60 which is why i will be driving it at spec and only one die at a time, if only that green die was an IR die i would make the perfect military light, but some concessions must be made. I look forward to everyone's input and thanks much!

 

[AnAppleSnail]

From PDF on the MC-E Color, here are the die characteristics.
Edit: Oh no my chart
______ ___Vf_ Vf(max) lm@350mA
Red_______ 2.2_ 2.5__ __ 30.6
Green _____3.4 _ 3.9__ __ 67.2
Blue____ __3.2 _ 3.9 __ _ _ 8.2
White (Cool) 3.2_ 3.9__ _ _ 95
WhiteNeutral 3.2_ 3.9 __ __ 80

I suspect that the "8.2 lm at 350mA" for Blue is a typo - but I can't find what it should be. That may not be the case, however - as many blue LEDs run around 15-20 lm@350mA. The big deal for you is that the brightnesses are not the same at given drive levels, and all the forward voltages are different.

I strongly suspect this will make your driver options tricky - either a different resistor for each emitter's path, or separate drivers - or else you'll poof your dies. Also, the relative brightness becomes tricky - it's likely that the blue emitter will be a fraction of the brightness of any of the others. Your controller may well have to account for the Blue being so much weaker than any other color; and I'm not sure from looking at numbers how to advise you. I know it will be a fun experiment though .

Your resistor work is possibly:
I = 700 mA
V = 3.2v
V = Vf(red) + Vresistor
3.2v = (2.2) + (700mA) * (Rred)
3.2v = 2.2v + (700mA) * (1/.7)
Rred = 1.43 ohms

But check with someone who has done successful mods...all I've done so far is waste the magic smoke.

 

[SFG2Lman]

well the max for all the dies is 3.9V except the red which is 2.5 so i think if i ran it on 3.7 i should be fine and then get a resistor for the red, i know it won't be pretty as each die will not be centered in the reflector and the brightness levels are all different, but i really want these options in a small pocketable but powerful form, i'm really mostly concerned with the switch, i have no idea how to do that, short of hacking holes in my 6P and making individual toggles i'm hoping someone has a 4 way head selector ring switch for surefire, if not, i'll need to fab something even uglier (read: use jb-weld and duct tape)

 

[SFG2Lman]

o no, it looks like 4-sevens beat me to it, my only choice is to make mine better and more intuitive otherwise i'll get sucked into another 4-sevens purchase lol see link

this doesn't mean i don't want help though! lol

 

[SFG2Lman]

although is i trim some of these down maybe i can make a "super-kroma" interesting...