EDIT1: I forgot, that’s a ‘clone’ so it’s possible that a different clone/original/whatever might have a different diameter driver. I’d be a little surprised.
EDIT2: As an alternative it might be worth considering the 9-amp driver shown off by Old-Lumens in this thread: Maglite Twins - Build thread. Beam Shots are up The stock driver would need to remain in place as a contact board. I think that the 24x7135 driver might be able to be installed directly against the back of the LED shelf if care was taken with the wiring. New wiring holes might be required. In any case the heat from those 7135s must go somewhere.
About that measurement, that is the PCB which is soldered to a brass ring. The brass ring could be tossed aside and the driver itself be used as the primary contact between the retaining ring and the head. I haven't done the measurements yet, but I suspect it wouldn't be too difficult to accomplish.
I'm also not sure if the UF-T90 is set up this same way in the driver area. Been a while since I researched that one.
Ah, I’ve looked more closely at your pictures now. :zipper_mouth_face: I see now that the brass ring is adding quite a bit to the diameter of the driver. If I understand the pictures correctly the retaining ring is a separate piece - so even without the brass ring in place the driver could be tightly secured. Does that sound correct?
Yep, well mostly. The retaining ring is separate, but going based off the pics (been a long while since I had it apart), the threads may run out before the retaining ring can snug down onto the larger diameter PCB by itself. Might have to get a little creative here.
The quad xml2 handle is actually the light I mentioned earlier 'quad' that I was contemplating putting this fantastic driver in.
I would say that this is very comparable to what I do to the M6 Mod.1: lower moonlight, about 4A per LED, and no disco modes. I think this is easier to install than what I do with the Mod.1.