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Backwards actually Mac. As the coil developes alumina the shorts(wire touching wire) are removed therefore your res will INCREASE until you reach your final res. Fact
If your res is DECREASING during the first vapes it's happening somewhere in the grommet area. Probably because you torched your wire before install or winding or you didn't get your parts clean enough.
I don't think I have it backwards cig.
It's decreasing from a point above the spec wire res, e.g. a 1.87Ω return for a 1.78Ω wire spec. Assuming the wind were otherwise geometrically sound, that would be typical and caused by deviations in wind tension and wire imperfection. Smaller than human visual limits but not as small as caused by impurities. By the time the subject ones resolve the much smaller have likely all been as resistance usually locks then.
Agree with you, if after you hit target res in pulsing to micro you then experience drift to the low, lower than the wire spec, you have an actual short. Take care of it or there goes your vape.
It's more unusual but happens. The oxidation issues cure and 20 mins into your vape you've suddenly got a hanger short pushing you .12Ω down. It's possible you can have BOTH deviation drift to the high and an actual grazing contact drift headin' south. That is the ultimate waddafaux moment for res because you were after all right on target when you started (or so it seemed). These are the kinds of situations where the chip can sometimes get fooled and send you spectacularly high res. Check for the hanger.
Point being if you're getting a 3.0Ω read on a 2.0Ω build you could have multiple issues.
The downward progression does happen because oxidation is a process. Whereas, upward progression from a short or intermittent short I don't see happening or don't understand your meaning. It's fixed, or it's not. However, you can get different value reads on an intermittent depending upon the contact. That I've seen and plenty thanks to squirrely grommets.
Hope that's clearer.
Good luck all.
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Chanel, as vision spinners do not have a digital display (no ohms check) how do you know it's shorting. Probably not shorting. Probably open ( no connect) because your spinner pos pin has dropped.
To fix:
Turn off your spinner. Remove clearo. Using a small flat blade jeweler's screwdriver gently pry the pos pin up by lifting (tilting) it all the way around a little bit at a time. This will return it to its original height so that it can make contact with your clearo pos pin.
Hope this helps.
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Muddier Mac. Doesn't make sense to me and I'm formally schooled as an electrical tech.
First lets look at it from the wire standpoint itself. Although the wire can be higher or lower in res than the manufacturer's spec it can only "increase" in res from what it actually measures on "your" spool. First by tensioning which slightly stretches the wire thereby reducing its diameter and second by loosing aluminum/chromium/iron atoms during oxidation which also reduces its conductive diameter. Either way res "increases".
Now wind a nice tight tmc., put it on a dripper where grommets are not a concern and measure the res. It will have turn to turn shorts all over it where bare wire is touching bare wire and will measure the lowest res you will ever see from it. Now fire it and measure. Res increases. Fire again and measure. Res increases. Res will continue to rise as oxides develope until all the turns have stopped shorting.
If you are seeing something other than this I don't know what's happening Mac. Faulty meter maybe.
Now put a perfect tmc in a kanger. The same factors as described above still apply but now we have a grommet to contend with. The lowest res achievable is to have electrical contact of the legs occur at the point where the legs from the coil enter the grommet . If they make contact further down the grommet res will "increase".
Not going to address hangers here as there is really no excuse for them to exist.
So increase increase increase in res is what we all should see during coil breakin. If you are seeing decreases look to the grommet or hangers.
Hey watch where you sling that stuff!
I'm only the messenger cig. You're a scientist in reasoning as I am. Figure it out. Be the scientist. Don't tell us what it can't do. Explain the phenomena. Scratch and I are actually seeing it. If you simply say it's just the opposite, you leave us in mystery. I know what it must do. Should do.
[It] never increases in resistance. The wire can't do that of its own and I've never claimed it. Resistance returns do because of electron jumping across turns in the absence of the thorough insulation afforded by uniform alumina oxidation. To my understanding an APV's chipset interprets the increase in temp, draw, etc. and gives us a higher res result. A t.m.c. has the potential to achieve the most perfect isolated relationship of turns in practical terms. Standard winds can't avoid it (they short in contact even insulated by alumina) and conventional microcoils fall short of that optimal condition. Tensioned micro's can be the most efficient vaporizing circuit we can build if oxidized to the optimal potential of that particular wind. What is it I'm saying? It sometimes isn't…ready for prime time.
That's the subject here. And it's an all too common source of confusion for beginners. The fact that we're dealing with a continuous short that must be optimized, cured, broken in to the fullest insulation state that it can be. And it varies each wind and broadly overall. All new application cig…a t.m.c. Let's keep the notebook handy.
I qualified my response...Assuming the wind were otherwise geometrically sound. That precludes the possibility of an actual short (that would produce a low res return). So the subject here at all is the curing or proofing of the final accurate form of a t.m.c. And there I've narrowed it down quite a bit.
I am reporting what I've persistently seen throughout along with others, and right here on ECF as well. I try to explain the attributes as precisely as I can without leaving too many behind (sorry chanel if that's so on occasion). Two B&M owner's this week alone. Meeting on this very subject of high resistance drift of t.m.c.'s. Pacing them through the process of clearing it, definitely and conclusively. I'm a practiced hand at this. On coils built by a half dozen interns, trainees and a good proportion mostly myself. All kinds of different wind styles arriving at the same consistent geometry. Picked at random out of a variety of lots. All share exactly the same behavior. And that performance in a certain proportion exhibit the resistance characteristics I describe and as noted by scratch. It's not at all that uncommon cig. I've cited the two primary causes per the numbers.
This is not Mac talking here. I have my opinions and preferences. They're rarely heard here. I'm talking for the cross-section. A fairly sizable sampling for what was to be a simple study and poll. But yeah, how that has influenced my perceptions and deductions. So there's wiggle room in the observations. But not much.
It doesn't account for everything including t.m.c.'s that end up with low res after pulsing. That would be atypical and signals to me a departure from the norm, not a proper t.m.c. physically in it's geometry, orientation and termination. As for what you're seeing I would have to do a much broader sampling to know better what's happening. But as many have noted on this thread over the past year. I'm pretty good at capturing the moment and analyzing the snapshot.
Suffice it to say that with the direction formulated on this thread I have a very high confidence level that the average user will produce a stable and efficient t.m.c. If applied with a modicum of faithfulness, they will see the result. If not, and they have...vape it baby! You'll get there if you built a good one. I could've just said that but you see that would have been opinion.
Your turn. You're free to take a stab at it and deliver the layman's terms. Have at it. Just please let's us both try not to dilute the paradigm and stay on topic. Or we between us can confuse the sh!te out of everyone here. I'm sure I've done my fair share as hard as I try otherwise.
Good luck cig.
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Not to derail but... Mac, Cig, Jamie, Chanel, just wanted to thank you guys for the thread and help! My full size PT2 arrived this morning.. Immediately threw one of my new micro 1.8s in, filled with some Killer Juice Blue Raz I've been hanging onto (looks like it had exactly 2.5ml left even). Man.. Its blowing away my mini PT2!!! Soooooo much flavor and the thickest clouds I've ever blown! So stoked I took the jump into microcoils! There is no going back now! Gotta pick up another PT or two before they're all gone.. Too bad I can't rebuild my iClear I bet it would be rad with dual micros and cotton!!
Think next month its time to get my first RBA.. Now to decide Kayfun, Russian, Rose V2.. SEE WHAT TROUBLE YOU GUYS CAUSE!!!
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