In the top RRT01 the sn looks more like a date code to me with the letters and numbers.
The bottom one with strobe and sos just uses a plain number for the sn.
I suggest giving your RRT01 a test. Turn it on in about med then quickly to high and back to about med, then back to high. More less when the light is on twist the control ring to high twice quickly or three times. If you have the EYE10 driver you’ll get some flashy modes that are infinitely variable in brightness.
@Firelight2, That is not correct.
I just bought an Astrolux S41, and its 18650 tube is NOT compatible with an RRT-01. The threads bind, and the light does not work.
I have an 18650 tube that I thought was from an E14 whose threads perfectly fit the old RRT-01. The threads do not bind and the light functions normally. The tube has too many threads so some are exposed, but a little time with a hacksaw and file would fix that.
I thought the tube was from my E14, but failed to double-check. Must’ve been from a different light. Maybe a BLF A6. I’ll double-check and report back.
I bought some sapphire lenses on aliexpress, as far as I can check it, they are legit. This store has a good collection. Check if they are flat and the correct thickness, because they are sold as watch christals, some are convex.
thanks for the link and suggestions to avoid domed lenses
I have not actually found any sapphire listings in the 18mm diameter range (intended for original RRT-01), yet
I’m not around a lot anymore, made a lovely career change in my 50’s that’s all encompassing at this point.
Try this fellow for sapphire, if he doesn’t have what you need, he will more than likely recommend a source. I just used his lenses for a NiteCore mod last year, very happy. Be cautious of crystal thickness and also of replacements with rounded edges, you made need o-ring changes, depending on the torch. .005 matters
and thanks for the 0.13 mm tolerance ( 0.005) relevance, advance warning about rounded edges, and potential replacement O ring awareness
all very helpful
I shared that suggestion with someone, but it did not work out as expected… I dont know why, I have not tried the Crelant myself…
they reported
“Crelant 7G3CS arrived today. It does NOT fit the JetBeam RRT-01 as I had hoped. I put an 18650 battery in it and it has two speeds, 1226 lumens and 350 lumens … Note that the Crelant 7G3CS tube threads are slightly different than the RRT-01 and will not engage in the JetBeam’s head”
any solution I can pass on would be appreciated
Edit
it is possible the mismatch Im hearing about was between the head of a NEW 2019 RRT-01 and the Crelant. imo Archibald Tuttle knows what hes talking about. In no way do I doubt his recommendation that a Crelant 18650 tube fits an ORIGINAL RRT-01
This thread really needs to become a sticky. Sincere thanks to everyone who contributed.
Late last year, I lost my Nitecore D10 to American Airlines, and began using a long stored JB TCR1 as EDC.
The adjustment ring on the TCR1 was just pure trash. I almost treated it as such, and nearly binned it.
Some BLF knowledge and some Nyogel ( it had no grease, none) turned the TCR1 into a world class flashlight.
It’s hard, for me, to go back to another EDC interface after using the dimmer type dial.
A stock BLF Q8, modded Thrunite TH20 & modded JB TCR1 are a extremely versatile trio.