New 16650 li-ions, ¿15mm extension tube for Sipik SK68 & clones?

24 posts / 0 new
Last post
Barkuti
Barkuti's picture
Offline
Last seen: 1 day 9 min ago
Joined: 02/19/2014 - 14:46
Posts: 5636
Location: Alhama de Murcia, Spain
New 16650 li-ions, ¿15mm extension tube for Sipik SK68 & clones?

Hello!

 

Well, having recently stumbled with these new UR16650ZTA 10A 2400mAh batteries at GB, and given that current 14500s still Sir Suckalot, I thought it may have sense to suggest such an idea. After all:

  • SK68 clones' market penetration is huge: lots of potential customers (LOL). LOL
  • The thing is about machining very simple tube extensions of, roughly estimating, nearly 17/20mm∅ ID/OD, and almost 22mm total lenght (15mm of body + threads' male, sorry if my technical jargon sounds odd).
  • Both shipping and manufacturing seem to be über-cheap and easy.

 

0K, the main reason for this is to see if enough people would like the idea and chime in, so 1/2 someone(s) would dare to turn on the lathe, work on some alu/brass tubing (for me no need for a paintjob), and earn a few bucks and thank yous.

 

Cheers Party

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

kiriba-ru
kiriba-ru's picture
Offline
Last seen: 3 days 2 hours ago
Joined: 01/17/2016 - 02:34
Posts: 2143
Location: Russia

Im not sure you are right.
There is not enought place to screw in extra tube than is 15.9 ID as I think.
Dont have sipik in my hands now, but I remember that threads are m18. Lowest threads diameter is about 17mm.
16.9-15.9/2=0.5mm. To thin.
Can you measure this cells OD?

kiriba-ru
kiriba-ru's picture
Offline
Last seen: 3 days 2 hours ago
Joined: 01/17/2016 - 02:34
Posts: 2143
Location: Russia

Also it will look awfull if you screw extra tube to the tail side.
While 65mm cell may fit with low profile pill that is screwed in by few mms.

kiriba-ru
kiriba-ru's picture
Offline
Last seen: 3 days 2 hours ago
Joined: 01/17/2016 - 02:34
Posts: 2143
Location: Russia

I think the main problem in aa sipiks is autopen-style tail switch.
Biulding powerfull light requires other switch, but there is not enought place for standart decisions.
I would better make custom tail for normal switch if smb could design it.

Barkuti
Barkuti's picture
Offline
Last seen: 1 day 9 min ago
Joined: 02/19/2014 - 14:46
Posts: 5636
Location: Alhama de Murcia, Spain

kiriba-ru wrote:
Im not sure you are right.
There is not enought place to screw in extra tube than is 15.9 ID as I think.
Dont have sipik in my hands now, but I remember that threads are m18. Lowest threads diameter is about 17mm.
16.9-15.9/2=0.5mm. To thin.
Can you measure this cells OD?

 

Hi kiriba-ru.

 

There's space my dear, you can be sure. No caliper at hand, sorry (I'm going to check out if I find it), but great eyesight, basic ruler and common sense to align the stuff straight to my eye. Just took a more careful look at it.

Well, let's see if I'm properly understood:

  • Bore of the tube is 17mm, so there is a full of 17mm∅ inside, threads are wider than this.
  • Diameter of the tube entry, where the tailcap threaded male inserts, seems to be about 18'5mm.

Hope this helps.

 

Cheers Party

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

kiriba-ru
kiriba-ru's picture
Offline
Last seen: 3 days 2 hours ago
Joined: 01/17/2016 - 02:34
Posts: 2143
Location: Russia

Once again.
If threaded tube bore is 17mm and cell hole is 16mm, there is only 0.5mm for extenders wall. To thin as I think.
Take a piece of paper and draw how do you imagine it.

Barkuti
Barkuti's picture
Offline
Last seen: 1 day 9 min ago
Joined: 02/19/2014 - 14:46
Posts: 5636
Location: Alhama de Murcia, Spain

kiriba-ru wrote:
I think the main problem in aa sipiks is autopen-style tail switch.
Biulding powerfull light requires other switch, but there is not enought place for standart decisions.
I would better make custom tail for normal switch if smb could design it.

 

Well, I'd not go above 1'6ish amps for this torch so, if you are saying that because of the shabby tailcap spring, maybe a nice coil made of a sufficiently lavish amount of copper wire could help with that.

 

Cheers Party

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Barkuti
Barkuti's picture
Offline
Last seen: 1 day 9 min ago
Joined: 02/19/2014 - 14:46
Posts: 5636
Location: Alhama de Murcia, Spain

kiriba-ru wrote:
Once again.
If threaded tube bore is 17mm and cell hole is 16mm, there is only 0.5mm for extenders wall. To thin as I think.
Take a piece of paper and draw how do you imagine it.

 

Aah 0K, got it now: cell hole is 17mm.

 

Cheers Party

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

kiriba-ru
kiriba-ru's picture
Offline
Last seen: 3 days 2 hours ago
Joined: 01/17/2016 - 02:34
Posts: 2143
Location: Russia

If cell hole is 17mm, there is no place at all for any visible tube wall.

kiriba-ru
kiriba-ru's picture
Offline
Last seen: 3 days 2 hours ago
Joined: 01/17/2016 - 02:34
Posts: 2143
Location: Russia

Also hosts cell hole are 16mm with “-” tolerance, 15.9-15.98 as usual. So 16.5mm cells wont fit without boring.

DavidEF
DavidEF's picture
Offline
Last seen: 11 months 1 hour ago
Joined: 06/05/2014 - 06:00
Posts: 7699
Location: Salisbury, North Carolina, USA

kiriba-ru wrote:
If cell hole is 17mm, there is no place at all for any visible tube wall.

kiriba-ru, OP says estimated ~17mm ID and ~20mm OD of the battery tube. In other words, he’s saying that the tube looks to be already ~17mm inside, with a wall thickness of ~1.5mm. Real measurements are better, but if the cell already fits, there doesn’t need to be any more boring anyway.

The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy

kiriba-ru
kiriba-ru's picture
Offline
Last seen: 3 days 2 hours ago
Joined: 01/17/2016 - 02:34
Posts: 2143
Location: Russia

DavidEF wrote:
kiriba-ru wrote:
If cell hole is 17mm, there is no place at all for any visible tube wall.

kiriba-ru, OP says estimated ~17mm ID and ~20mm OD of the battery tube. In other words, he’s saying that the tube looks to be already ~17mm inside, with a wall thickness of ~1.5mm. Real measurements are better, but if the cell already fits, there doesn’t need to be any more boring anyway.

I had tons of sk68 clones and I remember measurement close enought. Threads are m18×1. There is no way to fit any additional tube that will be 17mm ID.
DavidEF
DavidEF's picture
Offline
Last seen: 11 months 1 hour ago
Joined: 06/05/2014 - 06:00
Posts: 7699
Location: Salisbury, North Carolina, USA

kiriba-ru wrote:
DavidEF wrote:
kiriba-ru wrote:
If cell hole is 17mm, there is no place at all for any visible tube wall.

kiriba-ru, OP says estimated ~17mm ID and ~20mm OD of the battery tube. In other words, he’s saying that the tube looks to be already ~17mm inside, with a wall thickness of ~1.5mm. Real measurements are better, but if the cell already fits, there doesn’t need to be any more boring anyway.

I had tons of sk68 clones and I remember measurement close enought. Threads are m18×1. There is no way to fit any additional tube that will be 17mm ID.

Well, you may be right. I don’t have any way of knowing. It just seemed that you and he were talking past each other. So, I thought I’d try to help explain what he was saying. Either way, if he has both the cells and the light in his hand, and the cells fit, there can be no more argument about whether they should. But, I’m not even clear about whether that is the case, so we’ll have to wait for Barkuti to tell us.

Edit: By the way, kiriba-ru, I just want to say that your posts sometimes are hard to understand, possibly because of translation of cultural and language norms. Sometimes, the way you express yourself seems very direct and maybe a little bit gruff. But, I very much appreciate your contributions to this forum. I hope you never leave, but keep trying to help us understand things that maybe we don’t know yet. Thanks for everything! Big Smile

Barkuti – same to you. Wink

The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy

Barkuti
Barkuti's picture
Offline
Last seen: 1 day 9 min ago
Joined: 02/19/2014 - 14:46
Posts: 5636
Location: Alhama de Murcia, Spain

Hello!

 

0K fellows, I saw this coming. LOL

Measured the tube outer diameter before going onto my business just before my last reply: 19mm∅ (with the perspective compensated advanced eyesight device integrated in my head -ROFL-). Tube wall thickness is probably not above 1mm. At the tailcap end the tube is machined much thicker for a few millimeters, yet anyway you can see the threads go deeper than this in:

This image matches how my clones are, except for the tailcap (with a much smaller spring).

 

Cheers Party

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

kiriba-ru
kiriba-ru's picture
Offline
Last seen: 3 days 2 hours ago
Joined: 01/17/2016 - 02:34
Posts: 2143
Location: Russia

imagebam.com imagebam.com
I suppose you have sk98 clone.

BobbyMK
BobbyMK's picture
Offline
Last seen: 4 hours 5 min ago
Joined: 09/10/2015 - 05:50
Posts: 379
Location: Macedonia

What about this silly idea

Attaching some extension tube with some bolts and nuts to the body of the flashlight, it wont look pretty but it actually might work Smile

 Olight i3s, Olight S1, Olight S Mini, JetBeam Jet-1, BLF 348, Astrolux S41S, UF SK-98, Convoy S2+ 3*XP-G2, Convoy S2+ 3*XPL, Convoy S2+ 219CT, Convoy M1, Convoy C8, Brinyte B158, Courui D01, Convoy L6, Noctigon M43

kiriba-ru
kiriba-ru's picture
Offline
Last seen: 3 days 2 hours ago
Joined: 01/17/2016 - 02:34
Posts: 2143
Location: Russia

This hosts cost about 2$. It is more simple to buy second one and cut it and do as you suggest.

kiriba-ru
kiriba-ru's picture
Offline
Last seen: 3 days 2 hours ago
Joined: 01/17/2016 - 02:34
Posts: 2143
Location: Russia

DavidEF wrote:
By the way, kiriba-ru, I just want to say that your posts sometimes are hard to understand, possibly because of translation of cultural and language norms. Sometimes, the way you express yourself seems very direct and maybe a little bit gruff. But, I very much appreciate your contributions to this forum. I hope you never leave, but keep trying to help us understand things that maybe we don’t know yet. Thanks for everything! Big Smile

Im not using google traslator or smth like that and I dont translate text word to word from russian. I was learning english from small years and I was able to think in english directly, but it was long time ago and I had no practice for long time. I would be happy if anyone will fix my texts and show what is wrong. But as for me messages that I read here from fluent speakers are full of mistakes. Usualy EU members gives much more attention to the rules of english language that you americans. If some member from the US sent me PM usualy there are so many mistakes that I can understand nothing.
Barkuti
Barkuti's picture
Offline
Last seen: 1 day 9 min ago
Joined: 02/19/2014 - 14:46
Posts: 5636
Location: Alhama de Murcia, Spain

Well kiriba-ru, what I see matches my ruler eyesight measurements, including that one of the tailcap plastic disk.

For the outer diameter I finally settle at ≈19'5mm∅ after helping me out with the small holes at the end of the tube. Wink

 

Back onto what you said with regards to making a custom elongated tailcap, it really sounds sweet, but we'd need someone with the spirits to make something beautiful and worthwhile. Smile

 

Cheers Party

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Barkuti
Barkuti's picture
Offline
Last seen: 1 day 9 min ago
Joined: 02/19/2014 - 14:46
Posts: 5636
Location: Alhama de Murcia, Spain

BobbyMK wrote:
What about this silly idea

Attaching some extension tube with some bolts and nuts to the body of the flashlight, it wont look pretty but it actually might work :)

 

@#$%! Evaluated this sort of crazy idea just a few moments ago; however, I think the holes are just too close to the tube wall, could be possible yet maybe too tight of a fit for screw heads and/or nuts. Crying

 

Cheers Party

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

DavidEF
DavidEF's picture
Offline
Last seen: 11 months 1 hour ago
Joined: 06/05/2014 - 06:00
Posts: 7699
Location: Salisbury, North Carolina, USA

kiriba-ru wrote:
DavidEF wrote:
By the way, kiriba-ru, I just want to say that your posts sometimes are hard to understand, possibly because of translation of cultural and language norms. Sometimes, the way you express yourself seems very direct and maybe a little bit gruff. But, I very much appreciate your contributions to this forum. I hope you never leave, but keep trying to help us understand things that maybe we don’t know yet. Thanks for everything! Big Smile

Im not using google traslator or smth like that and I dont translate text word to word from russian. I was learning english from small years and I was able to think in english directly, but it was long time ago and I had no practice for long time. I would be happy if anyone will fix my texts and show what is wrong. But as for me messages that I read here from fluent speakers are full of mistakes. Usualy EU members gives much more attention to the rules of english language that you americans. If some member from the US sent me PM usualy there are so many mistakes that I can understand nothing.

No, not saying that your words are wrong. Different cultures and different languages have different ways of conveying thoughts and ideas. We are a multi-national forum. What I was saying before is that sometimes the cultural/language difference is so great that it makes things hard to grasp for others. I know people on here have given you grief before about things you’ve posted. So, I was saying that I hope you don’t let it keep you from continuing to post here. As far as I’m concerned, you are welcome to keep posting as you always have.

The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy

kiriba-ru
kiriba-ru's picture
Offline
Last seen: 3 days 2 hours ago
Joined: 01/17/2016 - 02:34
Posts: 2143
Location: Russia

BTW congrats with 3000nd post

DavidEF
DavidEF's picture
Offline
Last seen: 11 months 1 hour ago
Joined: 06/05/2014 - 06:00
Posts: 7699
Location: Salisbury, North Carolina, USA

kiriba-ru wrote:
BTW congrats with 3000nd post

Thanks! I’ve been watching that number rise the past couple weeks and trying to figure out what to do for a GAW. I don’t have a huge collection of nice lights to draw from like so many of these guys. But, I’ve gained so much by being here, I want to give back somehow.

The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy

hank
hank's picture
Offline
Last seen: 4 weeks 1 day ago
Joined: 09/04/2011 - 21:52
Posts: 9638
Location: Berkeley, California

I’ve been able to Frankenstein together parts of SK68 and “3W Police 2AA” lights, to use 3xAA alkalines.
That has been talked about here for a long time: When it works it’s fine, you get a nice solid feeling 3xAA light with the SK68 as the bright end.
https://www.google.com/search?q=site%3Abudgetlightforum.com+“3W+Police...

But the results are inconsistent because the “3W Police 2AA” threads aren’t reliably the same from one batch to another.