Space or no space between wraps

[Evanagreer]

Hi All - I am still pretty new to the rebuilding world but have been doing well at getting functional builds done on my Subtank Mini.

I've seen many pictures of different builds you all have done and have seen some coils with wraps that have equal spacing between them and some where the wraps are pressed together so they are touching.

when would one want to build one way or the other? Space or no space?



thanks in advance!

 

[SkvLTD]

To have it heat up faster and hold the heat better since links are all together, or more spread out evenly along the wick. Entirely up to your preference.

 

[cinetrope]

When I first started to build, I was hand wrapping 28 AWG around a section of silica wicking material and it worked fine. For the last year or so I've been using a jig to wrap contact micro coils, then pulling organic cotton wicks through them. I personally prefer the later method, especially on an RTA like a kayfun which has a much narrower build deck than most RDAs.

 

[93gc40]

Most find that spaced coils offer more flavor and slightly slower gunking of the coils and contact coils tend to offer a bit more cloudiness. I prefer spaced coils with cotton-ball wicks, in my Kayfun. FWI, the coil in my Kayfun now is a spaced, 2.15ohms 29awg wrapped at 3.5mm id stuffed with cotton, running at about 10watts. coils is a around 5-6mm long. Difference for me is wicking, I can run the spaced coil about 2x as long between wick changes. Really the need to dry burn.

 

[AndriaD]

I've always preferred a bit of space between my wraps; it doesn't concentrate the heat so much, so there's less risk and less instance of wick-burning, and it also keeps it cooler on my lips. At first I needed to slightly compress them, to get them fairly tight but not touching; with experience, I've gotten better at just wrapping them very closely, so that now I rarely ever need to compress them at all, they're closely-wrapped without touching. My current favorite coils are about 1-3-1.5 ohms; I use 29ga wire, and switch off between 3/32 and 7/64 inner diameter, so it's usually about 5-6 wraps. Usually I prefer the 7/64s for cotton wicks, and the 3/32s for rayon wicks, just because cotton wicks need to be loose in the coil to allow for expansion, and rayon needs to be much tighter in the coil.

Andria

 

[WharfRat1976]

 

[Ryedan]

I've been using contact coils for quite a while now. Lately I've been experimenting with non-contact coils and I find I'm getting better flavor with these. I've been using rayon for about the last half year.

I'm still going back and forth between the two styles, which takes me a while because I typically vape one setup all the time. I do have two bottom fed Cyclone RDAs, so maybe I'll set one up with contact coils and one with non-contact and really see how they differ, but I have not done it yet

 

[Exchaner]

I am looking for a screw to wrap my coils evenly but have trouble finding the right threads. Tried one machine-screw with 40 threads per inch and the spacing was too large. Tried another at 56 threads per inch and it turned out to be too small. Is there something in between, and where do I find it? Couldn't find it at Home Depot, mainly because some screws do not carry such specs. The one I am using has specs like this: #2-40-1. #2 is the diameter, 40 is the number of threads per inch, and 1 is the length. I probably need something like this: #2-46-1.

 

[Evanagreer]

Thanks for all of the good information! Just did a couple new builds with the tips above. Very much appreciated.

 

[Evanagreer]

I even put together a twisted coil. It came out to 0.9 ohms. I'm going to put space into the next one to keep it a bit cooler.

 

[inspects]

View attachment 422406 I even put together a twisted coil. It came out to 0.9 ohms. I'm going to put space into the next one to keep it a bit cooler.

Nice job........

 

[Ryedan]

Nice job........

I second the motion

 

[Libbydude]

I'm glad this came up. Motivated me to try the spaced coils. I jumped into rba when squeezing and torching just became all the rage. Was almost convinced I needed one of them there gizmo's so I could make tensioned micro "coals". It seems to be easier to make a good performing spaced coil. I think I will keep on torching and squeezing for my kayfun but I'll keep my rda's and subtank spaced.

 

[MacTechVpr]

I'm glad this came up. Motivated me to try the spaced coils. I jumped into rba when squeezing and torching just became all the rage. Was almost convinced I needed one of them there gizmo's so I could make tensioned micro "coals". It seems to be easier to make a good performing spaced coil. I think I will keep on torching and squeezing for my kayfun but I'll keep my rda's and subtank spaced.

Some people doodle. I reach over grab a pin vise and spin up 3 or 4 coils. Perfect coils. Coils that will oxidize as perfectly as nature allows because you can't get 'em closer. And all of that took about all of 5 mins, if that.

How do you define easy?

Good luck.



p.s. For the Sub Mini you've got 2.7mm post to post. Look what you can do with it…

 

[inspects]

Really nice work, Mac.........

Don't remember ever seeing one so evenly heat, ie...picture three.....!

 

[MacTechVpr]

Really nice work, Mac.........

Don't remember ever seeing one so evenly heat, ie...picture three.....!

A footnote, just sayin'. Key feature of a micro, contrary to popular myth, is that they don't fire inside-out. What tension does is put 'em right smack up against each other…pullin' in arm-to-arm. Like The Rockettes kickin'! That's what perfects the micro. Gettin' 'em as close as they can be. When you pulse them then that's when the nature does the best work…they oxidize in that superbly uniform state. Result? You get that even heat distribution that you see. And, the best part, the more you use them, the more that stabilizes. ALL vape elements can warp or twist out of shape with the rigorous reheating of vaporization. Tension winds lock in that symmetrical geometry inhibiting distortion in use and so run cooler. That efficient concentration hugely bumps the heat sink effect of the wick and coil. You have a finely mated union of the concentrated heating surface of a microcoil with the tension optimized uniformity of electron flow. A perfect recipe for enhanced vaporization. That's what a tensioned micro coil does.

Hope ya gotcha some.



Good luck.

Protank MicroCoil Discussion!
!Tensioned Micro Coils. The next step.

 

[Exchaner]

Some people doodle. I reach over grab a pin vise and spin up 3 or 4 coils. Perfect coils. Coils that will oxidize as perfectly as nature allows because you can't get 'em closer. And all of that took about all of 5 mins, if that.

Silly question, what is a pin vise? Is it available at any hardware store, or only at a specialty shop?

 

[MacTechVpr]

Silly question, what is a pin vise? Is it available at any hardware store, or only at a specialty shop?

Amazon.com: Professional Quality Brass Pin Vise - 4 Collets Chucks 0.0mm to 3.0mm

Solution is so elegantly simple and inexpensive it's ridiculous Ex. We've been winding on a metric for precision for thousands of years. But it seems we're stuck on the challenge of it all in vaping.

Not difficult to do and then important tools like Steam Engine | free vaping calculators become meaningful and helpful.

No faster or easier way to a predictable and productive vape.

And used drill bits you got layin' around no doubt.

Good luck Ex.

 

[Exchaner]

Thank you very much Mac. Does the vise grab the loose end of the wire for added tension or would I have to rely on my thumb for that? Again, sorry for the newbie question

 

[mightymen]

I've been wrapping my coils hand tight for over a year. I use three foggers from 1 ohm to 2.2 ohms with cotton wicks and all of them started giving me leaking issues about a week ago. I tried wrapping my coils end to end and the leaking went away thank God. I vape up to 12 watts and haven't noticed any difference at all.