These new contacts make me sick...

[B2L]

What a great explanation, thank you very much for taking the time and for the drawings!

I'll have to do some more experimentation with coil set ups especially with these RM2s as I have been struggling with the very limited wick issues. I have tried several different configurations but all have been contact coils ranging from nano to macro with very mixed results. Nano is out, just can't wick fast enough. Micro seems to be working OK for the time being. Macro worked ok but there wasn't enough coverage as they were still contact coils so the vapor and flavor were diminished.

Thanks for the advice, I'll try it today!

Rip trippers can be annoying and showboaty (is that even a word?) at times, but he has pushed the envelope with coil builds, or at least made other people's coils more accessible.

http://m.youtube.com/watch?v=9MNJuYuwgwI

I have a 24 gauge parallel macro going in my Cyclone at .2 ohms and it is awesome. It's a paired wrap of 24 gauge wrapped 4 times around a 1/8 inch bit. Super low resistance but more surface area for better flavor. It works well in the Cyclone but I'm not sure how it would work in the RM2 because you really need cotton under it to hold more juice or it will dry out too fast. With the hole on the bottom of the RM2, I'm afraid it would get blocked and not feed back to the bottle.

Forgot to add, if you build this please check it on your ohm meter with the top cap on your atty. The coil is so big it's easy to contact the cap or the post in such a confined space. I had to keep adjusting to make sure it was clear.

 

[solace.discord]

love reading through these threads- get me some edjamacashun!

I don't sub, I like 1.3-1.5ish, 30g A-1 on a 14 or 16g blunt needle. some wraps are close together, some aren't.. they work for me.. easy to wick.. some would call these "ugly," but I think my coils are beautiful, only because I made them..

did have to drop my nic down when I started using RM2s- got that green feeling after chaining on 6mg for a few hours the first night!

looking forward to the extended battery life with the kits!

 

[Craybee]

These new contacts make me sick
No, literally
You don't understand
My vapor clouds are far too thick
Six hits and I threw up
(without using my hand)
I think I have to lower my nic
o-tine again, obviously
These hit so obscene
-ly well.
Damn.

that was a lovely poem.

 

[B2L]

that was a lovely poem.

He's the Dr Suess of vaping

 

[ltrainer]

Here's what I don't get. I keep hearing about more surface area with a smaller diameter coil. I would define surface area as the length of wire that is actually touching the wick. If you use the same gauge wire and you get the same ohms in two different configurations then the length of the wire touching the wick is the same because each gauge of kanthal has so much resistance per inch no mater how its shaped. Surface area is the same. One configuration using a 1/16 inch diameter and one using a 1/8 diameter, if the same ohm output, would have the same surface area. THe same amount of wire is on the wick, providing the legs lengths are the same. I think this is why some people can make micro coil and others can wrap an ugly big coil and both users are happy.

If I go one step further one can argue that a big ugly coil is better because theres more wick which can hold more juice than a microcoil. More juice held means less squonking.

THe above is assuming the same gauge wire is used for both builds. If different gauge wire is used then surface area changes for equivalent ohm coils.

 

[e30ernest]

I almost wish someone would do a blind vape test experiment. Different coil builds/sizes with cotton at the same resistance, atty, voltage and juice scored on taste, throat hit and vapor production to get more empirical results on which coils are better.

 

[knotin1]

I almost wish someone would do a blind vape test experiment. Different coil builds/sizes with cotton at the same resistance, atty, voltage and juice scored on taste, throat hit and vapor production to get more empirical results on which coils are better.

I agree. I just made an ugly .8 using 28gauge and then a 1/16 bit 8 wrap tight 1.26 28gauge. I like the the 1.26 better. But really not sure if there is a difference or not.

 

[B2L]

I almost wish someone would do a blind vape test experiment. Different coil builds/sizes with cotton at the same resistance, atty, voltage and juice scored on taste, throat hit and vapor production to get more empirical results on which coils are better.

The best coil in the world, without a doubt, is the one that works best for you.

 

[Dconnor]

Here's what I don't get. I keep hearing about more surface area with a smaller diameter coil. I would define surface area as the length of wire that is actually touching the wick. If you use the same gauge wire and you get the same ohms in two different configurations then the length of the wire touching the wick is the same because each gauge of kanthal has so much resistance per inch no mater how its shaped. Surface area is the same. One configuration using a 1/16 inch diameter and one using a 1/8 diameter, if the same ohm output, would have the same surface area. THe same amount of wire is on the wick, providing the legs lengths are the same. I think this is why some people can make micro coil and others can wrap an ugly big coil and both users are happy.

If I go one step further one can argue that a big ugly coil is better because theres more wick which can hold more juice than a microcoil. More juice held means less squonking.

THe above is assuming the same gauge wire is used for both builds. If different gauge wire is used then surface area changes for equivalent ohm coils.

Lately I have been wondering the same thing. I have traditionally used micro oils because of the surface area argument, ease of use etc. I am wondering if we shouldn't be more focused on more surface area of wick.
The more wick we have, the more juice available to vape, and with correct air flow should theoretically produce more flavor?

 

[e30ernest]

The best coil in the world, without a doubt, is the one that works best for you.

That is definitely true. However, wouldn't it be nice to know which kind of coil at 1 Ohm for example, produced the most or least flavor, has the harshest or mildest throat hit, warmest or coolest vape? For many, the ideal vape is a combination of these factors. The objective is not to find which is the best coil, but the overall characteristics of each coil.

Lately I have been wondering the same thing. I have traditionally used micro oils because of the surface area argument, ease of use etc. I am wondering if we shouldn't be more focused on more surface area of wick.
The more wick we have, the more juice available to vape, and with correct air flow should theoretically produce more flavor?

I think there is a practical limit to wick size. Too thick, you'll get unvaporized juice and cause gunking, too thin and you will run into premature dry-hits depending on your vape wattage. For the most part, I think this is why micro coils work well at a certain resistance range.

 

[Dconnor]

That is definitely true. However, wouldn't it be nice to know which kind of coil at 1 Ohm for example, produced the most or least flavor, has the harshest or mildest throat hit, warmest or coolest vape? For many, the ideal vape is a combination of these factors. The objective is not to find which is the best coil, but the overall characteristics of each coil.



I think there is a practical limit to wick size. Too thick, you'll get unvaporized juice and cause gunking, too thin and you will run into premature dry-hits depending on your vape wattage. For the most part, I think this is why micro coils work well at a certain resistance range.

I agree but for example with cotton, the wick always wears out in the middle where the heat is the greatest. If everything else was equal would some space between the coils not minimize this and supply fresh juice to the center portion of the wick?
Also thinking this would allow a squonk to feed more juice to the center of the wick and not rely as much on the tails to wick it up. Possibly reducing dry hits?

 

[super_X_drifter]

What original led me to wrap a much smaller diameter coil (micro coil) wasn't even driven by heat or surface area but a theory on hydronics.

I thought of how if you wet a tubular object (like a pipe horizontal) the water quickly runs down the sides and collects near the bottom leaving the top dry.

I see the horizontal coil as a similar scenario and was trying to minimize the dry top scenario by minimizing the cross section - hence the micro coil.

I believe that concentrated, more efficient heat transfer is a side effect but the reduced cross section provides fresher juice in better contact with all surfaces of the coil interior.

Squonking less often has never been high on my list of desires. Every time I squonk I'm introducing fresh juice to a very short wick in a coil with a very small cross section. No wonder my vape is so damn fresh and delicious

Squonking is your friend. Be one with it

 

[e30ernest]

I agree but for example with cotton, the wick always wears out in the middle where the heat is the greatest. If everything else was equal would some space between the coils not minimize this and supply fresh juice to the center portion of the wick?
Also thinking this would allow a squonk to feed more juice to the center of the wick and not rely as much on the tails to wick it up. Possibly reducing dry hits?

Alexander Mundy actually answered these questions in the following link:

http://www.e-cigarette-forum.com/fo...icro-coils-increase-vapor-flavor-th-1059.html

My personal, anecdotal and unscientific experience:

I'm inherently lazy. Because I am lazy, I wanted to setup my vape gear so that I didn't have to rebuild every time I wanted clean flavors out of my juices.

Back when I was building "ugly coils" and was just starting to explore cotton as a wicking material, I found that my spaced out coil would still wear out the center of my cotton wick. The fact that I had to rewick often got me looking into contact coils in the first place. Contact coils are easier to wick because they hold their shape better and provide a more consistent contact patch to the wick. So now I had a coil I can potentially vape on for months without needing to recoil, all I needed to do was slip in a fresh sliver of cotton.

After experimenting with diameters, I found 1.4-1.6mm inner diameter coils worked best for my preferred resistance range (0.8-1.4). Larger diameters gunked up quickly while smaller diameters would dry up too fast. So I ended up joining the micro coil wagon.

I also experimented with tail lengths. I found longer tails held more liquid (good) and allowed me to take longer drags for more vapor (good) but also gunked up quickly (bad). I found my juice caramelized badly on long-tail wicks. Shorter tails gave better flavor (good) but meant I needed to drip more (tedious) or I'd get a dry hit and burn my cotton (bad). So shorter tails felt like the way to go (for me) but I had to keep on dripping....

And that's why I bought a Reo. Squonking rocks!

Edit: I didn't mean to sound like I came to all of my conclusions on my own, but the guys at the micro coil thread have been instrumental in helping me build my coils. I'd try some stuff out and I'd refer to that thread to find other stuff to try out. The information there is gold!

 

[ancient puffer]

I've thought about this some too. What I wonder is whether the liquid has to be in direct contact with the wire, in order to vaporize? If that's the case, then all of the above arguments for "pretty" coils holds true. However, if the heat being *close* to the liquid is sufficient to vaporize it, then the "ugly" coils, by definition, should be able to vaporize more liquid, even at the same heat (i.e., resistance).

I'm convinced the "ugly" coils win out, as far as wicking, but I haven't the wherewithall to test out my thoughts about vaporization temperature. Do we know for certain that the eliquid has to have direct contact with the wire?

 

[B2L]

What original led me to wrap a much smaller diameter coil (micro coil) wasn't even driven by heat or surface area but a theory on hydronics.

I thought of how if you wet a tubular object (like a pipe horizontal) the water quickly runs down the sides and collects near the bottom leaving the top dry.

I see the horizontal coil as a similar scenario and was trying to minimize the dry top scenario by minimizing the cross section - hence the micro coil.

I believe that concentrated, more efficient heat transfer is a side effect but the reduced cross section provides fresher juice in better contact with all surfaces of the coil interior.

Squonking less often has never been high on my list of desires. Every time I squonk I'm introducing fresh juice to a very short wick in a coil with a very small cross section. No wonder my vape is so damn fresh and delicious

Squonking is your friend. Be one with it

He said wet a tubular object... Huh huh, huh huh, huh huh

 

[zmauls]

I've thought about this some too. What I wonder is whether the liquid has to be in direct contact with the wire, in order to vaporize? If that's the case, then all of the above arguments for "pretty" coils holds true. However, if the heat being *close* to the liquid is sufficient to vaporize it, then the "ugly" coils, by definition, should be able to vaporize more liquid, even at the same heat (i.e., resistance).

I'm convinced the "ugly" coils win out, as far as wicking, but I haven't the wherewithall to test out my thoughts about vaporization temperature. Do we know for certain that the eliquid has to have direct contact with the wire?

It depends how hot your wire gets. E-liquid will have a specific temperature at which it evaporates. Imagine it on a large scale. A giant (and I mean giant, think like 3 feet in diameter) "ugly coil" would be entirely ineffective, because it would not get hot enough to vaporize the e-liquid in the spaces between the coils. The same diameter "sexy coil" would cover those closed spaces and compensate for the lack of heat. So, in my case, where my wires are running at 0.20Ω, they are certainly hot enough to vaporize all the e-liquid in their area. The same coil built of 30G or 28G, resulting in higher ohmage and less heat, might not be.

 

[Kevin33]

I've thought about this some too. What I wonder is whether the liquid has to be in direct contact with the wire, in order to vaporize? If that's the case, then all of the above arguments for "pretty" coils holds true. However, if the heat being *close* to the liquid is sufficient to vaporize it, then the "ugly" coils, by definition, should be able to vaporize more liquid, even at the same heat (i.e., resistance).

I'm convinced the "ugly" coils win out, as far as wicking, but I haven't the wherewithall to test out my thoughts about vaporization temperature. Do we know for certain that the eliquid has to have direct contact with the wire?

I always assumed that a lot of vapor comes off the wick. When I do a dry burn, there is vapor coming from all around, even long before the coil turns red So maybe with a wick inside the coil, only 0.5mm or less of the wick next to the coil puts out vapor, but I think that it does some.

I do spaced, semi-ugly coils because when I tried tight ones, I lost a lot of flavor. I only like tight ones with a cinnamon roll liquid I've got because it brings out the cinnamon. Other than that, it's no contest for me, although I am usually in the 0.8 to 1.2 range and I am a bit of a noob.

 

[ancient puffer]

It depends how hot your wire gets. E-liquid will have a specific temperature at which it evaporates. Imagine it on a large scale. A giant (and I mean giant, think like 3 feet in diameter) "ugly coil" would be entirely ineffective, because it would not get hot enough to vaporize the e-liquid in the spaces between the coils. The same diameter "sexy coil" would cover those closed spaces and compensate for the lack of heat. So, in my case, where my wires are running at 0.20Ω, they are certainly hot enough to vaporize all the e-liquid in their area. The same coil built of 30G or 28G, resulting in higher ohmage and less heat, might not be.

I follow that. But what I'm saying is, if the wire gets hot enough to vaporize eliquid that's very close to the wire, not just what's in direct contact, then it seems the "ugly" coil has more surface area "close to" the eliquid, due to the juice being, not only inside and outside of the wire, but between it as well.

 

[kachuge]

funny how some of us are reducing the nicotine again and again...........

I started at 18............went straight down to 12 within a couple months.....

and a couple months later I find myself at 9........ wasn't even planning on reducing till December.... and it's barely may!

I couldn't vape as much as I wanted at 12...... I was getting light headed, numb fingers, etc...........

......maybe.. just maybe..... it's cause of the great new coils i'm building now....... getting a lot more nic delivery i'm thinking....lol

anybody else reducing the nic level they're buying because of stuff like that?

g

 

[c3 rolling]

I just placed an order for 3mg nic juices. Cant handle chain vaping 6mg at 1 ohm anymore...