the ones in my original are 5mm nichias.
they are tapered rather than cylindrical.
so you may have to open up the holes a tiny bit.
i will be looking into non destructively modding one but may leave my original unmolested since it was one of the first.
they are tapered rather than cylindrical.
so you may have to open up the holes a tiny bit.
i will be looking into non destructively modding one but may leave my original unmolested since it was one of the first.
Yeah, I did a Yuji mod on one of my pak-lite chassis a while ago. Turned out fine, except for two things:
1) the Pak-lite LEDs are not 5mm size, but a bit smaller (4mm?), so the new LEDs don't fit the same way;
2) the plastic GITD shroud is glued on so carefully that I had to destroy it to get down to the circuit board to solder on the Yujis.
That meant losing all of the nice self-contained properties of the Pak-lite. Now it's just a board with a couple of emitters on it.
Anyone can take a 9-volt receptacle and a piece of circuit-board, solder on some resistors, a few emitters and a switch, and have something *like* the Pak-Lite. But it will be god-awful ugly (as was my Yuji mod) and probably won't get the same efficiencies.
The total package of the Pak-lite as sold is a very nice, compact, bombproof piece of kit. I always have one in my day bag. i don't even carry a 9-volt with it--they are heavy cells, and for the weight I'd rather have other lights. No, I carry the Pak-lite bare, because it is so ridiculously light and small that there is no reason *not* to toss it in there. Having it gives me an option to scavenge a kind of cell that is hard to fit into my other lights (in particular, my never-leave-home-without it ZL H53).
And of course I also have a few around the house, using old smoke-detector batteries to mark doorways. They stay on constantly, for months at a time.
(Funny you should mention giving your MIL some of them, Scout. I did the same for my mom years ago--four Pak-lites and as many 9-volt cells, in case of power outages).
I'm going to order one of the new 3500k versions. Sure, I wish they were cheaper. But it's an unbeatable form-factor, and an ingenious piece of kit.