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Thread: 18650 Extender for JetBeam RRT-01/TC-R1?

  1. #1
    Enlightened jedirock's Avatar
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    Default 18650 Extender for JetBeam RRT-01/TC-R1?

    I'm sure I'm not the first person to think of something like this, but I don't see any others posts about it, so I'll ask.

    If there anybody who might be willing to make an 18650 extender for the JetBeam RRT-01 and/or the TC-R1? I got a TC-R1 the other day, and while it seems to be a great light, it seems that my LiFePO4 batteries don't quite have enough voltage to drive the light to its full potential. I was going to order some LiMn 18350 batteries for it, but if I'm able to use my existing 18650s, that'd be even better. I don't mind an extra 30-35mm on the light (it'd make it easier to hold anyway), get a bit more runtime, and mean that the power draw will be well under the 2C limit for LiCo, even with 2400mAh 18650s (750mAh 16340s don't quite cut it, as based on JB's quoted runtime, it's approaching 3C on those batteries).

    Titanium extender would be preferred, give I already have the TC-R1. No special finish is needed other than a polish. There may be more people interested in something like this too, so maybe we could organize some sort of group buy or something.
    Last edited by jedirock; 05-16-2012 at 08:18 PM.
    Fenix TK-11 R5 | Olight SR90 | SWM V10R Ti XP-G R5 | JetBeam TC-R1 #167

  2. #2

    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    It is possible to do this without major effort if it is a simple polished surface.

    However it depends on what size is going to be popular ... 18500, 18650 or both?

    Simple polished surface is the easiest to execute.
    Last edited by mohanjude; 05-25-2012 at 12:50 PM.
    During the day when I don't need a torch ... RC is my hobby http://rc.runryder.com/helicopter/gallery/47842/Always on the lookout for McGizmo/Kuku Titanium torches with Trits..

  3. #3
    Enlightened jedirock's Avatar
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    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    That's a good question about the battery size. I hadn't thought about 18500 myself as I don't own any batteries of that size, but I could see it being popular given it wouldn't increase the size of the light nearly as much as an 18650 extender would. Personally, I would go for an 18650 extender. I don't know if that's representative of people who would be interested in this though.

    Would you have a rough estimate on how much an extender might cost to make?
    Fenix TK-11 R5 | Olight SR90 | SWM V10R Ti XP-G R5 | JetBeam TC-R1 #167

  4. #4

    Buttrock Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    I have the TC-R1 and would like an extender for the 18650, so send me a note if possible please.

    Regards.

  5. #5

    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    Making an extender should not be expensive. I estimate it to be around $50 for an extension in titanium. Until I price it up by buying the materials and asking the machinist do the job I cannot give a accurate price. I will get a prototype done in the next 2-3 weeks and report back to see if it is a viable option. I am hoping to make a few anyway regardless of cost.
    During the day when I don't need a torch ... RC is my hobby http://rc.runryder.com/helicopter/gallery/47842/Always on the lookout for McGizmo/Kuku Titanium torches with Trits..

  6. #6
    gunga's Avatar
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    Default

    I'm interested. 18650 or 18500 (for AA use)

  7. #7

    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    Quote Originally Posted by gunga View Post
    I'm interested. 18650 or 18500 (for AA use)
    Mike - will you posted.
    During the day when I don't need a torch ... RC is my hobby http://rc.runryder.com/helicopter/gallery/47842/Always on the lookout for McGizmo/Kuku Titanium torches with Trits..

  8. #8

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    Count me in for one in 18650 flavor please.
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  9. #9
    Flashaholic Tofty's Avatar
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    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    For that range of price i'd go for one as well (for the TC-R1, 18650 length)

  10. #10

    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    Quote Originally Posted by Tofty View Post
    For that range of price i'd go for one as well (for the TC-R1, 18650 length)
    I am a flashaholic and don't want to make a profit. I will try and make it and hopefully be able to share it at the cost incurred to me. The extension should be approx 30mm long to accommodate a 18650 battery. Buying 25mm Ti bar is not prohibitive. However the longer bar I buy the cheaper it becomes. Making the 1st pro type is the most expensive as it takes time to make a drawing, turn that drawing into a Cnc programme etc. eventually when you get the prototype there are inevetible changes that need to be made.

    I am hoping to make a 20mm and 35mm extension that is a simple polished tube with no additional machining on the surface to keep costs down. It may end up not looking nice as it may be too plain and will need to get feedback from you.
    Last edited by mohanjude; 06-02-2012 at 12:42 AM.
    During the day when I don't need a torch ... RC is my hobby http://rc.runryder.com/helicopter/gallery/47842/Always on the lookout for McGizmo/Kuku Titanium torches with Trits..

  11. #11
    Flashaholic Tofty's Avatar
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    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    Quote Originally Posted by mohanjude View Post
    I am hoping to make a 150mm and 300mm extension that is a simple polished tube with no additional machining on the surface to keep costs down. It may end up not looking nice as it may be too plain and will need to get feedback from you.
    Those are long extension pieces, i'm not sure how many people would risk running 5 or even 9 CR123s. But seriously, looking at a TC-R1 the head piece has about 12mm of untextured surface before the joint, the extention piece should blend in well with this. It might look a little strange but probably not 'wrong'.
    It's a shame that the Jetbeam uses square threads though.

    I certainly wouldn't be surprised or upset if the final price was quite a bit higher, if it isn't i've got to start talking to the machinists you use.
    Last edited by Tofty; 06-02-2012 at 12:08 AM.

  12. #12

    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    Quote Originally Posted by Tofty View Post
    Those are long extension pieces, i'm not sure how many people would risk running 5 or even 9 CR123s. But seriously, looking at a TC-R1 the head piece has about 12mm of untextured surface before the joint, the extention piece should blend in well with this. It might look a little strange but probably not 'wrong'.
    It's a shame that the Jetbeam uses square threads though.

    I certainly wouldn't be surprised or upset if the final price was quite a bit higher, if it isn't i've got to start talking to the machinists you use.
    I'd think he meant 30mm and 15mm respectively. The current tube is about 35mm long, with the stated extensions they'll fit a 18650 and 18500 nicely.

  13. #13

    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    Tofty - sorry for any confusion

    A IMR 18350 is 18mm in diameter and 35mm in length.

    A 18650 cells is 65mm in length but in reality almost all the cells I measured is 69 to 70mm long

    So I would need to make a 35mm extension for the 18650 cell or 20mm extension for 18500 cells.

    I don't think cr123 are going to work as they will be doubling the voltage - I don't know if the driver on the TCR1 can take 6v?
    Last edited by mohanjude; 06-02-2012 at 12:43 AM.
    During the day when I don't need a torch ... RC is my hobby http://rc.runryder.com/helicopter/gallery/47842/Always on the lookout for McGizmo/Kuku Titanium torches with Trits..

  14. #14
    Flashaholic* Larbo's Avatar
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    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    I am in for a 18650 tube.

  15. #15
    Flashaholic Tofty's Avatar
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    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    @ Mohanjude: sorry i was just being deliberately obtuse.

  16. #16

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    I'm in also! 18500 please!

  17. #17
    Enlightened
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    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    I have someone drawing up some designs for a 18650 body. Would a full knurling body be preferred? What about the tail with the lanyard hole? I was thinking or just getting rid of it. Also does anyone know the threading on it?

  18. #18
    Enlightened jedirock's Avatar
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    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    Quote Originally Posted by nMotion96 View Post
    I have someone drawing up some designs for a 18650 body. Would a full knurling body be preferred? What about the tail with the lanyard hole? I was thinking or just getting rid of it. Also does anyone know the threading on it?
    I had just been thinking of an extender with the existing body myself, but I guess it would be possible to just replace the whole rear end instead, given there's not even a switch in it. If that were the route chosen instead, I'd personally go without the lanyard hole. I use the clip myself, and I've had a couple people mistake the nub for a switch, and then confusion ensues when it doesn't move.
    Fenix TK-11 R5 | Olight SR90 | SWM V10R Ti XP-G R5 | JetBeam TC-R1 #167

  19. #19
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    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    Definitely interested. It would have to be posted to Aus though.

  20. #20

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    I like the idea of the full body. Maybe a removeable lanyard ring can be sandwiched between the clip and body?
    This is my signature. They're many like it but this one is mine..

  21. #21

    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    I will take a 18650 extension in titanium for my TC-R1.

    Regards.

    Quote Originally Posted by mohanjude View Post
    Making an extender should not be expensive. I estimate it to be around $50 for an extension in titanium. Until I price it up by buying the materials and asking the machinist do the job I cannot give a accurate price. I will get a prototype done in the next 2-3 weeks and report back to see if it is a viable option. I am hoping to make a few anyway regardless of cost.

  22. #22
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    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    This tube would likely work with an EYE10, right? Basically the same light I believe. If that's the case then I would be interested in an 18650 tube.

    BTW guys, you might want to re-think the 18500 tube. I've done testing at a 3 amp load between AW 18350s (better than 750mah at this load with VERY LOW voltage sag!) and AW LiCo 18500s (can't remember the numbers exactly but I can dig them up) and there's not as much difference in energy outputted as you probably think. Not worth the length increase over the excellent AW IMR 18350, IMO. If you're going to go longer you might as well go 18650 so that you can get a real increase in capacity.
    Last edited by Colonel Sanders; 06-13-2012 at 10:28 PM.
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  23. #23
    gunga's Avatar
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    Could it work with AA? Does this circuit work with 1.5v? That is the reason for 18500.

  24. #24
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    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    Quote Originally Posted by gunga View Post
    Could it work with AA? Does this circuit work with 1.5v? That is the reason for 18500.
    O now I C. I kinda doubt it'll work so well or perhaps not at all with 1.5v. With a LiPo 3.7v cell it should work fine I would think.
    SPY 007 XM-L2, BVH 150w Vec192 HID, Gen III Maxabeam, Barn Burner, FireFox III, Mac's Customs 3840L & Damascus/Cu/Al Tri-EDCs, ma_sha1 FrankenMag, Drake, MF Scorpion 4x XM-L2, Tri-219 EYE10, XP-G2 X10

  25. #25
    gunga's Avatar
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    Ah. Tis too bad. The sunwayman circuit, like in the v10r ti, works well with AA, with a little less top end. I was hoping the jetbeam circuit would be similar.

  26. #26
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    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    I can test it on my EYE10 and let you know. You're talking about using an alkaline cell, right?
    SPY 007 XM-L2, BVH 150w Vec192 HID, Gen III Maxabeam, Barn Burner, FireFox III, Mac's Customs 3840L & Damascus/Cu/Al Tri-EDCs, ma_sha1 FrankenMag, Drake, MF Scorpion 4x XM-L2, Tri-219 EYE10, XP-G2 X10

  27. #27
    gunga's Avatar
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    Default Re: 18650 Extender for JetBeam RRT-01/TC-R1?

    Alkaline is fine, though I will be using eneloop if possible. 14500 is another option, but I would like eneloop as an good alternative. Alkaline should be fine for level testing.

    THANKS!

  28. #28
    gunga's Avatar
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    Any updates? Does the circuit work with aa?

  29. #29

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    I will check on machining shop on Sunday where I might be able to get a slot to get some work done.
    During the day when I don't need a torch ... RC is my hobby http://rc.runryder.com/helicopter/gallery/47842/Always on the lookout for McGizmo/Kuku Titanium torches with Trits..

  30. #30
    gunga's Avatar
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    Confirmed. Works with AA.

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