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). :))
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.
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?
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.
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.
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.
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.
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 m18x1. 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!
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).
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.
@#$%! 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. :((
