WTB: Jetbeam RRT01 – Any place to buy it?! + [RRT01 2019 discussion]

I kind of doubt that Jetbeam used at US standard size screw.
Not saying it’s impossible, just not very likely.
I might see if I can ID the screw size.

Any luck with IDing the jetbeam screw size?

Also, does anyone know the size of the metal ball in the TC-R1? I guess it should be the same with the RRT-01, all models.

I believe the screw size is m2.5 (metric 2.5mm).

:person_facepalming:
I had forgot all about it, to be honest. :blush:
It appears the best I can tell to be a 2.5mm x 0.45mm thread.
The detent ball is 2mm. I went with the Silicone Nitride Ceramic which is supposed to be harder than stainless.
This is where I purchased the balls I use…
2mm Si3N4 Silicon Nitride Ceramic Ball Bearings G5 – BC Precision?
I paid about $15 for 50 balls, plenty of spares. :wink:

Thanks guys!

I have a TC-R1 I cannot get smooth, while my 1st TC-R1 is buttery smooth. The second one came from strange origins. It was missing o rings and has the bezel of a Niteye EYE 10 instead of its own. So I fear it may have a wrong or damaged ball.

I found a source for these Silicone Nitride balls in the UK (your source moderator007 wants $23.50 for shipping to the UK). I will let you know if the ball fixes the dial.

Did you notice smoother action with these compared to the stock ball?

Not really over a good ball. But I have seen one that was slightly flat spotted and caused roughness at sporatic times, it helped that one for sure.
What lube are you using?

I think I may have a bad ball :stuck_out_tongue:

I am using Krytox and a sprinkle of PTFE powder. It has made my 1st TC-R1 a joy to use, but not this second one.

That should work great, the more PTFE you add by volume the more the damping effect.
Too much though and it becomes pasty.

Yes, I have seen that, The problem is this light does not want to work well. I have opened, cleaned and lubbed it 3 times and it works semi-OK for 30 seconds and then it becomes thick and uneven. I bet the ball does not even turn.

maybe do a test

take the ball out, and verify if it is affecting the feel of the ring, or not.

> it works semi-OK for 30 seconds and then it becomes thick and uneven

I have never experienced grease becoming denser with use. I did have a problem V11r, that would get looser on part of the travel. The fix was to lube the top outer face of the control ring.

I look forward to your success!

I have taken the ball out and the ring worked freely, but I did not do it for long. As you know, opening the light requires removal of the driver first, so I will do the entire procedure when the new ball arrives, which should be within the week.

I do not think it is the grease becoming denser. I think it is the ball settling in the hole in a way it stops turning. I believe it is not round, even though I have not checked.

I will let you know how it goes with the new ball.

fwiw, some of my lights feel like there is almost no detente. Especially after I add damping grease.

Im not sure a ball is necessary. If the grease is damping enough.

I have removed the ball from an Eye10. I used extra grease to get maximum damping. To be honest, I think I used more than necessary, it is a bit difficult to turn the dial now. But it met my objective. There is no chance the dial will turn unintentionally.

At the other end of the spectrum, I have one light whose ball has an unusually strong detente. I dont actually like it, because the extra effort to turn the dial past the detente, makes the dial turn too suddenly.

Most of my lights, have an almost unnoticeable detente, so I can ramp smoothy off the stop.

I look forward to your effective solution. Totally understand wanting to wait and try a new ball. But I wish you would try no ball, until the new one arrives. You may decide not to use it, and I wont have to wait as long for your results.

Balls are overrated… :wink:

I’ll throw this out there since we are on the detent ball, as a solution for a wore out hole or maybe a track groove from hole to hole where the ball rides.
This ball is about .015” bigger than the 2 mm ball which should let it ride and track in a completely different position than the 2 mm.

I bought a few just encase I ever needed it.

Well, I have found the issue with the ring not working smoothly, no matter what.

Here is a picture of the new 2mm ceramic balls I received today on the top right and the bigger, not to mention corroded ball that was in there - I should have looked!.

I also used a felt wheel and Dremel red polishing paste to shine all the surfaces, but it is obvious the main issue was the ball.

the princess and the pea… LOL

congrats on getting to the root of the problem

prize goes to moderator007 for the correct guess :slight_smile:

moderator007 gets all the credit and my thanks for pointing out the proper size and a good type for the ball. I got 10 to have in hand :wink:

He also pointed out other trade secrets I will look into in due time :wink:

My sincere and deepest gratitude!

Your original ball looks like a 3/32 ball, can you take a precise measure to see.
I measured the original ball at 2mm and have used that size in several RRT-01’s and TCR-1’s.
.
You got me wondering what happened here, so I went and measured the ball out of a brand new never opened TCR-1 I just modded.
It measures 2.38mm which is the 3/32 ball.
Its got me wondering if the ball had been replaced in the TCR-1 I original measured the ball in.
Either jetbeam used two different sizes (which I doubt) or someone had lost and replaced my TCR-1 ball with the wrong size.
I measured my wear replacement 3/32 ceramic balls at 2.38mm and the brand new original TCR-1 ball at 2.38mm so that would be the correct size ball.
I don’t know exactly what happened Pol77, I measured my TCR-1 ball at 2mm and ordered 50 of them with 10 3/32 balls as potential wear replacements.
2.38mm or 3/32 should be the correct size though. Puzzling why they would use a standard size ball and not metric.
It might be best to order a few of both sizes to make sure one will be a exact replacement.

Aha! The plot thickens! I will see how it goes with this ball and if it is smooth, I’m happy. If I do not like the feeling, I will try the larger size.

I have used the 2mm many times and wouldn’t have even known any difference if it wasn’t for your pic, then measuring a original one I know had never been replaced.
.
The Si3N4 balls should be a permanent replacement that shouldn’t flat spot, they’re way harder than steel balls. :wink:
They also have a G5 geometric tolerance rating which makes it more true to a perfect sphere than the steel balls.

can someone verify the claim that there is thermal protection in the 2020 RRT-01 driver

output testing is showing 2020 driver is no brighter than the 2019 model, they reach about 550 lumens, according to tests done by HDS and myself.

there seems to be a difference in the components on the battery side of the drivers (bottom left 2019 vs bottom right 2020):