You’re welcome Robert. Sorry this thread has dragged out to be so long. leddna still hasnt replied to my emails about the missing TIR optics that I ordered so I just upgraded my paypal dispute. Now that Ive had more time to rethink my options, I just might make this into a 4 x XML2 thrower… or one that has more throw than flood.
Looking over Old-Lumens SRK mod thread with 15 degree fasttech TIR optics, the wall-of-light concept is very attractive but I already have several flood lights. Besides, if a set of reflectors are of a descent design, there should still be more than adequate spill beam with a multi-XML light.
Thanks to agator007’s post about finding a good 25mm long throwing reflector, I could fit 4 of them in the XY-600 with some room to spare.
Driven at 3A each with 4 x XM-L2 emitters might be a better option than 6 XM-L’s with TIR’s driven at 2A each… at least for my use. Id only need 3 drivers (ala-relic style) if I decide to give it modes later on. Im going to sleep on this for a day or two and do a little more research before I decide the direction of the mod.
On a really positive note, the head of this light appears to be machined from one solid chunk of aluminum, so it should be great for thermal transfer. Even the floor plate seems to be part of the head, and its a very descent 5mm thick, with the outer 5 emitters contacting much thicker aluminum than the floor plate around the circumference. But because the head has been machined to countersink the 16mm pcb’s into the floor plate, its going to be difficult to change the original configuration without a lot of work and still maintain a good thermal path; and while not decreasing the distance from the emitters to the lens by adding material over the existing floor plate. Im going to see if I can find 1.5x16mm copper slugs to fill the voids of the 6 emitter PCB’s and rethink this. I presume these are 1.5mm thick.
Theoretical 26mm reflector swap:
Stock reflector: 17.67mm long x 20.79mm wide OD
Reflector retaining ring contact edge: 1mm
Total depth to lens: 18.67mm
Replacement reflector:16.67mm long x 26mm wide OD
Thickness of replacement PCB: 1.5mm
Total depth to lens: 18.17mm
Its close bit it looks workable.