Hard to say just where Devo fit into all that. They seemed more like “dopes on punk” at the time to me …
My 3 mm diameter, ~5 mm long coils wound with #28 SS 316L coils tend to get “wrenched around” more than I would like (upon insertion of new wicks that are nice and snug). It’s kind of tedious to “wrench and bend” them back, wondering when the “tails” may be giving out from the mechanical stresses imparted on them at those times. Swap wicks often, but find the (tiny) coil mounting tedious. Hard to see what I’m doing.
So I looked into the possibility of a 3 mm diameter, ~5 mm long (slightly “sturdier”) #26 wire gauge coil. Haven’t gone over 12 Watts coil power vaping NETs yet (with voltage-boosting, PWM controlled system), so I don’t need to specifically reduce Ohms (unnecessarily stressing the single Li-Ion battery cells used).
Regardless of numerical value of the particular Ohms in question, for a Constant Wattage system:
The same length of coil (~5mm using #26, as opposed to #28 wire) increases the load current draw by 37.5% (a factor of 1.375) while also increasing the 10%-90% (temperature) rise-time (from cold coil to the equilibrium temp, whatever that may be for a system) by 79.0% (a factor of 1.79). Thus, no free lunch there !
The 10%-90% (temperature) rise-time is also inversely proportional to load Wattage. However, increasing rise-time (by increasing the coil power, in order to warm the coil faster) increases battery current draw (by the square-root of the geometric increase in power). No free lunch, once again. Cost = more battery stress.
#27 gauge wire might represent a useful compromise in between (being a bit sturdier, as I have envisioned and desire) - but such an item does not appear to be available (at least, in Stainless Steel 316L grade wire). Some internet searching did locate one particular type of Nichrome wire that is manufactured at #27 gauge.
For those soon finding themselves even more uninterested in analysis, note that (for constant load power systems), the 10%-90% coil-temperature rise-time changes with the multiplicative product of the (Wire) Mass and the Heat Capacity of the coil, for any Wire Gauge (results from “classic” Steam Engine calc).
Haven’t tried to model Constant Temperature controlled scenarios [which may vary, due to different (non-linear) wire temperature coefficients and control systems]. To the extent that sensed temperature (may) not necessarily closely “track” wattage, somewhat different rules might apply ? To the extent that it does - same.
Yes. It’s more of a “density” thing. It may not be possible to hand-cram enough cotton in a coil to block juice flow. More fibers (hand tightened) seemingly = more capillary action
Need to be careful Cotton Bacon V2, there are clones out there, I got a clone once and when working with it noticed something was off. Upon further inspection noticed a slight difference in the packaging and found out I received a clone. Unfortunately there are clones of nearly all premium cotton out there, that is why most are putting authenticity codes that you can check on there website.
My favorite cotton is Cotton Bacon Prime followed by Native Wicks Platinum Blend. Just got some Kendo Gold Edition and it is shit and yeah, I checked the authenticity via there website and it is authentic. Juice has a harder time absorbing into this Kendo garbage.
The other talking about Rayon are onto something, just picked some up yesterday and wow does it wick fast. Have only wicked up 2 tanks with it so far and pretty pleased with the performance.
That said use what works for you, most of the time it is about “How” you wick than what wick you use.
Amidst a pile of complex, complicated and tedious analytical descriptions found, here is one simple clue:
Question: Is burning a wick related to capillary action ?
Answer: … A fluid such as heating oil will tend to flow upwards against gravity due to capillary motion. … oil atoms will keep moving up unless the forces between them cause them to clump together so that intermolecular forces weaken and their collective mass is too much to repel the force of gravity. …
… Typically the density of the fiber itself prevents the oil particles from clumping enough to reach this threshold, so they continue to move upward … this allows the oil to reach the top of the wick and burn.
Source: https://www.quora.com/Is-burning-a-wick-related-to-capillary-action
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Cotton, like rayon and wood pulp fibers, is made of cellulose. … Cotton cellulose differs from wood and rayon cellulose by having higher degrees of polymerization and crystallinity. Degree of polymerization is the number of repeating units that are linked together to form a molecule of cellulose. Crystallinity indicates that the fiber’s cellulose molecules are closely packed and parallel to one another.
Fiber ------ Average Degree of Polymerization ------ Average Degree of Crystallinity
Cotton ---------------- 9,000 - 15,000 ---------------------------------- 73
Rayon ------------------ 250 - 450 -------------------------------------- 60
Source: https://www.barnhardtcotton.net/technology/cotton-properties/
I liked Rayon when I used it, and never had any complaints re: wicking or general comparative functioning. My Cotton Bacon Prime edges out everything I have used by a small margin (IMHO)
Thanks for the tip, it works well on my last recoil. Felt weird to put that much cotton in. One thing for sure is that this one won’t leak
Less clear/straightforward where it comes to wick structures that are dripped-upon from above - but (in my experience so far), in the case of juice from a tank wicking upwards to the coil(s), physical (shape/density) asymmetries can lead to unilaterally increased temperatures (and corresponding unilateral gunk buildup).
Zues dual is one of my goto rta. Make sure you comb the cotton really well after you put it in the coil. I use a small wire brush for ceramic pottery to comb and thin the cotton. Initially when I used it I would get dry hits using cotton bacon until I seen a guy use the wire brush to comb it. And vollia hasn’t happened since