wire gap vs no wire gap

[charly1954]

I searched this subject but found no info so asking here. If there are threads about wire gap post the link if you want.

I make my own coils for my non rebuildable tanks. From the factory the coils have gaps, tanks like the Kanger T3S and EVod. So when I made mine I made gaps. Resently I built a coil with twisted 2 wire 32g., in order to get high enough ohms for my bat and fit inside the small area I made 8 no-gap wraps, tested 1.7ohms

My question is what is better, no gap or a wire gap. Logic tells me the more surface area making contact with the juice the more the vapor. So with gaps there would be more surface area, with no gap the wire side touch making less surface area.

I am getting my first dripper, a Necter Nano clone from FT. There's more room so I am wanting to know if I should make the coil w/gaps or no gaps. I will be shooting for 1.8ohms cause I will be using a GS Evo II 2200mah standard battery(no VV or VW). I figure 1.8 is about as low ohms as I can go since the bat wil be around 3.7v

 

[LilWhiteClouder]

search spaced vs non spaced coils and you should find something. I'll see what I can dig up. I build much lower than what you mentioned and almost always go with non spaced coils. half the time it must be this way to fit inside the atty. It makes sense that a spaced coil would have more surface area as the sides make contact with the wick.

Here's one: spaced vs compressed coils

 

[edyle]

I searched this subject but found no info so asking here. If there are threads about wire gap post the link if you want.

I make my own coils for my non rebuildable tanks. From the factory the coils have gaps, tanks like the Kanger T3S and EVod. So when I made mine I made gaps. Resently I built a coil with twisted 2 wire 32g., in order to get high enough ohms for my bat and fit inside the small area I made 8 no-gap wraps, tested 1.7ohms

My question is what is better, no gap or a wire gap. Logic tells me the more surface area making contact with the juice the more the vapor. So with gaps there would be more surface area, with no gap the wire side touch making less surface area.

I am getting my first dripper, a Necter Nano clone from FT. There's more room so I am wanting to know if I should make the coil w/gaps or no gaps. I will be shooting for 1.8ohms cause I will be using a GS Evo II 2200mah standard battery(no VV or VW). I figure 1.8 is about as low ohms as I can go since the bat wil be around 3.7v

I believe gapped (spaced coils) is better because the adjacent wraps have to compete for wicking.
When using thick wire and trying to fit into a small space it can become necessary to leave no gap; that is called a 'microcoil'.

 

[charly1954]

tks for the input and link. As I said I'll be useinig a reg. bat with no VV or VW so I can't go with low ohm. Wish I could so I can get more vapor. I guess some do use low ohms with high volts but I thought is wasn't save.
My buddy has a VV VW subox with low ohm coil, I think he said .5. He sets the watts and lets the watt settings pick the volts. He showed me what the volts was and I was suprised it read 3.6. I ask him won't that high of voits burn up the coil, he said thats what the VW picked. I guess its all over my head.

 

[charly1954]

...

Here's one: spaced vs compressed coils

Here's the ohm/bat chart I try to go by, is itpretty close to what most go by.
http://vtpics.vapertrain.com/voltagechart.jpg

tks for the link. Didn't have to go very far reading until I found a good reason to not space coils. Makes allot of since, Here's what it said. So maybe with a tight coil I could run lower ohms and it be safe for the 3.7v battery, is this right?

Microcoils (compressed so the loops touch one another) have less chance to develop "hot spots" or shorts.

Open or spaced out coils have the potential to have one loop of the coil to burn hotter than the rest (a hot spot or short). When vaping, the goal is to avoid shorts at all costs to protect the battery, the mod, and the vaper from a catastrophe.

 

[AndriaD]

tks for the input and link. As I said I'll be useinig a reg. bat with no VV or VW so I can't go with low ohm. Wish I could so I can get more vapor. I guess some do use low ohms with high volts but I thought is wasn't save.
My buddy has a VV VW subox with low ohm coil, I think he said .5. He sets the watts and lets the watt settings pick the volts. He showed me what the volts was and I was suprised it read 3.6. I ask him won't that high of voits burn up the coil, he said thats what the VW picked. I guess its all over my head.

Actually, sub-ohm coils are especially for mechs that don't offer vv or vw; the low/sub ohms are the only means of generating more heat and thus more vapor. But to support very low resistance, you must have a battery that's capable of sufficient amperage to do it safely.

With modern high wattage mods, low or sub ohms isn't necessary.

As for space/non-spaced, it's really a matter of personal preference. I vape at very low wattage (8.5-9w), 1.7Ω, and don't want a lot of heat or vapor, so I use spaced coils; they don't concentrate the heat so intensely.

Andria

 

[93gc40]

I believe gapped (spaced coils) is better because the adjacent wraps have to compete for wicking.
When using thick wire and trying to fit into a small space it can become necessary to leave no gap; that is called a 'microcoil'.

It's called a CONTACT COIL. Micro coil is a coil with very small internal ID. the term has been mis-used here for so long I can't remember if the cut-off is 1/8" or 1/16". But a coil with space between the coils is a "Spaced Coil" and a compressed coil is a CONTACT Coil.

I prefer spaced coil because, for me and the juices I use they stay cleaner longer.

 

[Nikea Tiber]

Spacing your coil wraps does not increase the surface area of a coil. Changing the inner diameter of a coil will only change the surface area of a coil by altering leg length.
Given that the resistance of a wire is determined by its length, coils of the same resistance with the same gauge and type of wire will have identical overall surface areas and identical wicked surface areas for all intents and purposes.

Spacing your wraps is necessary for ni200 as it doesn't form a non conductive oxide layer like kanthal, nichrome, ti, or the various stainless steel alloys.
Personally, I feel contact coils heat a bit more quickly (as the proximity of the wire wraps helps them all heat quickly from radiant heat). I build my coils to match the air intake of the atty I am using, occasionally spaced coils will create a better fit, but I wind tensioned contact coils for the most part.

 

[SLIPPY_EEL]

i used to vape non contacts often and be able to turn the heat up more without killing the wick, which is handy on a mech if you need a fast response.
one thing i have noticed about contact and non-contact is there is a 0.2ohm dif in the two. if i make a coil for two exactly the same attys and the same length of wire but one contact the other non-contact and say the contact is for argument sake 0.8ohms then the non-contact will normally end up 0.6ohms