Gauge, length, or number of wraps?
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I believe it is the length of wire as well as the guage of wire that is actually on the coil itself.
If I remember correctly, the higher the number of wraps/guage, the lower your ohms will actually be
can I get a fact check on this??? someone???
If I remember correctly, the higher the number of wraps/guage, the lower your ohms will actually be
can I get a fact check on this??? someone???
A certain length of resistant wire used yields a certain amount of ohms.
Kanthal A-1 Wire Specs: (Ohms Per Inch)
•28 AWG- 0.439 Ohms/in, 0.0508 Diameter (in.)
•30 AWG- 0.696 Ohms/in, 0.0100 Diameter (in.)
•32 AWG- 1.091 Ohms/in, 0.0080 Diameter (in.)
•33 AWG- 1.383 Ohms/in, 0.0071 Diameter (in.)
•34 AWG- 1.758 Ohms/in, 0.0063 Diameter (in.)
So depending on how much room you have to make the coil, what type of coil you make, how fast you want the coil to heat up, what type of wick material you use, what size battery you use, wether you like a cooler or warmer vape all come into effect.
For example, on a Provari (regulated mod) I use an IGO L dripper. I like a warmer vape, fairly fast heat up of the coil. So I make a micro coil on a 1/16th inch drill bit using 32 gauge Kanthal, about five wraps, cotton wick, giving me about a 1.8 ohm coil resistance. Clear as mud, eh?
Kanthal A-1 Wire Specs: (Ohms Per Inch)
•28 AWG- 0.439 Ohms/in, 0.0508 Diameter (in.)
•30 AWG- 0.696 Ohms/in, 0.0100 Diameter (in.)
•32 AWG- 1.091 Ohms/in, 0.0080 Diameter (in.)
•33 AWG- 1.383 Ohms/in, 0.0071 Diameter (in.)
•34 AWG- 1.758 Ohms/in, 0.0063 Diameter (in.)
So depending on how much room you have to make the coil, what type of coil you make, how fast you want the coil to heat up, what type of wick material you use, what size battery you use, wether you like a cooler or warmer vape all come into effect.
For example, on a Provari (regulated mod) I use an IGO L dripper. I like a warmer vape, fairly fast heat up of the coil. So I make a micro coil on a 1/16th inch drill bit using 32 gauge Kanthal, about five wraps, cotton wick, giving me about a 1.8 ohm coil resistance. Clear as mud, eh?
Yes. At DC the shape of the coil doesn't make a difference. It is purely a function of the length, the cross-sectional area and the material the wire is made from. The thinner the wire the more resistance it will have per unit length.
If you were using radio-frequency AC the answer would be different, but you're not.
If you were using radio-frequency AC the answer would be different, but you're not.
Length of wire - has resistance per foot per gauge. Different ga = different # of wraps which is a different length 
And so enters the comment section regarding microcoils vs standard coils and such...
Wormer? or Warmer
And don't confuse the Newbs
Ohms law is ohm law and construction is construction after all.
Wormer? or Warmer
And don't confuse the Newbs
Ohms law is ohm law and construction is construction after all.
damn spell check!!!!
I have a galaxy 10.1 note and the spellcheck socks wish I could shut it down. The app says not compatible for me darn.
Gotta watch out for those socks! Sneaky little bugger's. ;-)
sent from an undisclosed location on a secret device.
Mark Todd has a handy set of charts Todds Reviews: RESISTANCE/OHMS INFO up on his site that gives a general reference for the relationship between wire diameter, length, and resistance.
Note, however, that he is from Scotland, so all of the measurements are in metric. I have found this guide very helpful for getting me in the ballpark. It also has come in handy for determining equivalent setups, which allows me to alter the overall length of the coils to fit different electrical post differences, without significantly altering the overall resistance.
It goes without saying, however, that these figures should be used as a guide only, and to ensure you do not exceed the capabilities of your batteries or other equipment, you should always check the resistance of your coils with an Ohm meter before you apply current to it.
Note, however, that he is from Scotland, so all of the measurements are in metric. I have found this guide very helpful for getting me in the ballpark. It also has come in handy for determining equivalent setups, which allows me to alter the overall length of the coils to fit different electrical post differences, without significantly altering the overall resistance.
It goes without saying, however, that these figures should be used as a guide only, and to ensure you do not exceed the capabilities of your batteries or other equipment, you should always check the resistance of your coils with an Ohm meter before you apply current to it.
when you wrap ur wire you gots to wrap it too get to your ohm, the more you wrap the more the ohm go up, if you dont wrap much the ohm go down, then you needs to check your ohm on a meter just in case u didnt wrap it right, and dont cross the wires or let em touch metal on the innerds, then you built your good coil
The resistance of the coil and the voltage across it determines how much power is flowing. In order to produce vapour, that power has to be delivered to the eliquid. The form of the coil, it's tightness on the wick and the properties of the wick will all affect the vapour production in complex ways. For example, a bigger wire or a ribbon will have more surface area in contact with the wick. In a wider-spaced coil the wire will vapourise liquid for an area around it, whereas in a close-spaced coil there may not be that area to be affected. However if each part of the coil has too much liquid to operate on, it might not get hot enough to produce a lot of vapour.
Science can tell you how to produce a coil with a given resistance, which will produce a given number of watts at a given voltage. It cannot tell you, without highly complex thermodynamic fluid models, how it will deliver that power to the eliquid. In practice that is a matter of experience and trial and error.
Does anyone know of another site to view an omh chart? Those pics were to blurry to read from my phone. :-(
Go to the madvapes website for a nice ohms chart, or perhaps the kangertech website
sent from an undisclosed location on a secret device.
sent from an undisclosed location on a secret device.
I knew there must be one out there... https://play.google.com/store/apps/details?id=com.valsoft.vaperstoolbox
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