Great info on an alternative reflector for the Original RRT-01 to help eliminate rings in the beam
I will go ahead and order some to try out.
Thank you moderator007 for your efforts and generous sharing of information
a friend reports his stock reflector in an Original RRT-01 does not have a problem with rings in the beam using a 5000k 219c, but I certainly do have a problem with a 219b in an original RRT-01 w original reflector
I lent the Original RRT-01 w 219b to a friend, and he noticed the rings too, so Im really looking forward to trying the alternate reflectors.
It opens up some better possibilities for a run of Single N219b LED modded Original RRT-01.
Now that I’ve used mine so much, I wish Jetbeam would make a 18650 body for it…
I thought about modifying mine with a lathe to add so length in the narrowest part of the original tube but I’m afraid of ruining it…
For anyone who wants to run an 18650 with your original RRT-01: a Crelant 7G3CS battery tube fits nicely onto the original RRT-01’s head. Gives the RRT-01 more runtime with a lockout clicky. Overall length is roughly 120mm, IIRC . Anodize color will be off, but I use my lights for more than photo-ops.
Cheaper and much less time consuming than taking to the lathe and CNC.
The light lends itself to much improvistion. The screw in lanyard makes adding machined or 3D printed attachments easy as well. On a 3D printer, I made a twist off RRT01 lanyard cap for father-in -law that holds pills and hearing aid batteries
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.
unless you mean the new rrt-01 
