Incidentally, the threads in the old RRT-01 are compatible with the threads in the Manker E14 / Astrolux S41.
This means you can take an 18650 tube from those lights and lego it onto your old version RRT-01 head to get instant 18650 support.
There also tailcaps available for that thread pitch without without switches on them. So if you want a flat back with no switch it’s possible to do. I just tried it with parts on hand and it worked.
While the threads on those lights are the same as the threads on the RRT-01 head, it should be noted that there are more threads on the Astrolux/Manker tubes. If you want it to be watertight and cover the o-ring on the body tube you may need to shorten the threads slightly by sawing or filing off the top of the battery tube.
The old RRT01 also legos with a Convoy S2 tube, IIRC. But it requires sanding down the tube threads to make it short enough for a good fit. Or dealing with exposed threads and no waterproofing.
Yeah I agree with what you said about aesthetic…
That said, I got the 2019 for a review, so basically for free (is free time that free ?) so I’m not considering paying for an older model
I never tried any in the new model. The reflector in it seemed decent. Its possible this same reflector may drop in the new model. I measured it at 18mm earlier in this thread.
unmodified optic
legs wont fit into the Original RRT-01
trimmed leg sides on non-carclo triple optic for RRT-01
the non-carclo brand narrow clear optic sold by kaidomain is modified to fit without any glass lens over the optic, because the optic has a smooth face
when using a carclo 10507 besides trimming the sides of the legs as pictured, it is necessary to install a glass lens over the optic, to cover the holes on the non smooth face of the carclo narrow clear optic.