...I believe the 2.1Ω MC I'm vaping on now is 11 wraps; and I'm pretty sure when I do only 10 wraps of 30ga, I always get about 1.8-1.9Ω resistance reading on my eVic
Linking back to your post #30 M which got me questioning some of my results. And the reason I brought this up you probably realize by now. As we edge out minute shorts by tightening our builds the resistance values go down. And this has very much been one of the objectives of the tables I've been building and excerpted here. I think the tanks have sweet zones Kanger targets. I've been trying to tightly target them myself. How? At the nominal wind diameter spec/s. We know their values in resistance. I've endeavored to find the corresponding wire lengths through stabilized quantified builds.
My question to you was about your 10/11 wrap result for which I've had a lowest minimal tight build of 2.23Ω with many exact confirmations. Your results were far lower. My doubts were prompted by possible equipment error, including eVic false reads, on my end. So I promised to redo one for you. And I did do a 9 turn and posted that picture for you but never metered it on a proper ohmmeter. This morning I built three m.c.'s at 9/8, 1.75mm i.d. resulting in two at a new stat low of 1.99Ω and one at 2.03Ω (I got tired and sloppy). That last though has been the number I most often hit; and, I've lost count for this particular wind. I'd estimate a few dozen and a half builds so I stopped logging them. I have two matching desktop ohmmeters and both register identically and exactly. And all registered precisely across two separate eVics. I did not meter them externally which I should do and will as I have the opportunity. I pull these out routinely but less so with the 10 wraps like the one I mentioned and answered you about at
post #40.
Anyway M here are some pic's of one of those builds
The first one may give you an idea what wear and tear I've put these tanks through. The last the confirmed resistance for this 9/8 wind. I also take this opportunity to show a slight fudge evident in the 4th and 5th pic. I broke a procedural rule in that I did not ensure the legs were diametrically opposed before setting the grommet fully in place. I had to go back and fix this to get to 1.99Ω or that would never happen. It's a matter of wire length. Now this should be doom. You can't just pull on the positive leg to the right without further dislodging the outer loop. The trick is to
place the thumb on the wire end then rotate the grommet. The wire will rotate freely into place with it. I pulled the grommet out slightly and pulled in that leg once rotated into position. Also, to add to a point you raised earlier, I do a final burn on each coil; and, yes, do compress them in place at least a couple of times. In this instance, I don't recall if perhaps another 2 to 3 burns were required to perfect a join of all coils
Bottom line: Knowing those optimal
best targets for the tank and a given wind i.d. is what keeps us from having to poke around in the shadows for answers. We shouldn't have to by the 10's of thousands of newb's. We need them to adopt and adapt. Why? Because we face a strong headwind M. And the storm is coming in the form of antagonism and opportunism towards our activity. I am highly motivated. I need to do this to survive for reasons I won't expound on here but to say I tried to quit eight times with not the best results. So it's not out of a mere sense of altruism but some genuine and freely acknowledged self-interest.
I guess what I'm proposing here is that more of us should post such specific results. Perhaps encouraged by a pinned spreadsheet or log of user events the best results logged and nominal averages noted. In other words a guide. Perhaps I am quite far off in my build. I don't believe I'm far off and more likely mainstream of what can be achieved. I'm not going to the moon here. While not practical for other rebuildables, for a common mass-produced article like the Protank this info is extremely helpful. Noted therefore an update for achieved lowest resistance for PT1/2, 30 AWG at 1.75mm
30AWG, 10/9 1.58mm i.d., microcoil = 2.23Ω √
30AWG, 9/8 1.75mm i.d., m.c., tight = 1.99Ω √
30AWG, 8/7 1.58mm i.d. (XC-132), microcoil = 1.81√
30AWG, 7/6 1.75mm i.d., microcoil = 1.78 √
30AWG, 7/6 1.58mm i.d. (XC-132), microcoil = 1.57Ω √
If a broomstick's a better template for you thereafter, more power to you. At least you know where you started.
Good luck all!
