Oh oh, it's been so long I wouldn't listen to myselfgreat photos and info, thanks, I trust Lithium466 knows his stuff, when he talks, I listen.
curious, to replace the XR.. would you lift a new 10mm mcpcb with the new LED, using copper washers?
kaidomain will put a 2700k LH351d onto a 10mm mcpcb.. so DHart would only need to solder wires, no LED reflow task..
I have only modded models with XP LEDs and have not figured out how to tackle one of my XR lights.. tips appreciated
Plus I only ever had a D11.2, back in the day I had put a Nichia 219A in it!
2700°K LH351d sure sounds interesting...I have Novatac and HDS that could use a led update.
As for replacing a XR...it's been way too long for me to remember properly. The reflector has a wider opening but if well design to avoid the "Cree ring" it shouldn't need to have the led sit too high. Back in the day replacing XR-E with XM-L was pretty straightforward, using only a 1,5mm thick mpcb, but hey, was I picky like today (with all the great options out there) regarding the beam? Not sure.
Using the Sinkpad 10mm (they are slightly thicker at 1,65mm) and trial and error to see if washers are needed or not? But the contacts would probably be begging to short on the reflector, so it might be easier keeping a 12 or 16mm board...Sinkpad if you go the Nichia route, as they are slightly thicker (unless there are other options nowadays!).
I remember centering rings that would fill the "XR-E openings" of XR-E designed reflectors and center a 3535 led, a bit like this one maybe :
But I'm not sure that would work well with a Nichia led, so perhaps it would be better to use one of these "butterfly" centering things, that would allow the reflector to sit lower?