Question About 28 guage Kenthal Wire

[cocacola31173]

Im thinking about trying my first rebulidable. Decided on a IGO l cause Im only interested in single coils. The place I shop from only has 28 guage wire and I was wondering how many wraps would I need to get 1.5 to 2 ohms. Im planning on getting 2 MM wick. Any suggestions would be highly appreciated!

Thanks!

 

[Coastal Cowboy]

You'll need a multimeter before wrapping coils. It's not the number of wraps that determines resistance. It's the length of wire between the two terminals. You need to get familiar with the specs of the wire material you'll be working with and learn how much wire it takes to build the coil to the target resistance. With practice, you'll hit it with 0.1 or 0.2 Ohms every time.

But a means of checking the resistance of the finished build is absolutely necessary. Don't rebuild without one.

 

[Harlen]

You'll need a multimeter before wrapping coils. It's not the number of wraps that determines resistance. It's the length of wire between the two terminals. You need to get familiar with the specs of the wire material you'll be working with and learn how much wire it takes to build the coil to the target resistance. With practice, you'll hit it with 0.1 or 0.2 Ohms every time.

But a means of checking the resistance of the finished build is absolutely necessary. Don't rebuild without one.

You really need one , for safety .

 

[suspectK]

I second the multimeter, or at least an ohmmeter. Rebuilding can be tedious when you first start. That can cause you to overlook areas a short is located. You really need it for shorts. At room temperature, 28gauge per foot is 5.27 Ohms.

 

[cocacola31173]

Would a Vamo 3 be enough to check the ohms be ok?

 

[Coastal Cowboy]

Would a Vamo 3 be enough to check the ohms be ok?

Yes, a Vamo V3 will check the resistance of your coils and it's accurate to within 0.1.

I have that device, but I also own a multimeter and getting that second opinion is always good. They're not expensive at all. A good one costs less than a Vamo and has a multitude of other uses around the house.

 

[suspectK]

You need a ohmmeter to be safe. If you have a short, it could cause your battery to go into thermal expansion.

 

[cocacola31173]

Would it cause a short in the Vamo just checking the ohms without firing it? I don't want to spend a lot of money at first in case I don't like it but I don't want to mess up my Vamo either. I understand the need to check the ohms first though.

 

[Coastal Cowboy]

Would it cause a short in the Vamo just checking the ohms without firing it? I don't want to spend a lot of money at first in case I don't like it but I don't want to mess up my Vamo either. I understand the need to check the ohms first though.

If there's a short in the circuit, the Vamo V3 will display 9.9 on the ohms reading when testing with the + button. It will not fire under those conditions.

It will read a resistance lower than 1.2 ohms, but it will not fire below that threshold, either.

Unlike other mods, the Vamo does not need to "pulse" the coil with a nominal voltage (3.7v) to test resistance.

The Vamo won't work with sub ohm coils or coils that are shorted. It's a nifty safety feature, but at the end of the day you're relying on an inexpensive, mass produced circuit board. That's why I still recommend an inexpensive multimeter. They can be had for ~$20 right now at any box store or auto parts chain joint.

 

[suspectK]

I don't know if a vamo can do that ..don't own one.. If it can run the ohmmeter without firing, that will suffice, but check it multiple times before glowing up your coil.

 

[Sundodger]

You should also go to the E-cig maintenance section. There is a good chart there that will show you what ohms you should use for the battery voltage. You need to check your battery at full charge, then again at its lowest charge that still works. You have an ego? If its like mine it blinks yellow when the charge is low. Having the volts that your battery runs at and then looking at the chart you will be able to tweak your coils safely and get the most out of them.
On my EVODs I'm using 32AWG kanthal, six wraps and pegging a perfect 2.4 each time. I don't know what head you are using but the 28AWG might be to thick and you may not be able to get enough wraps to get it to cook the liquid into a nice vapor. Just a thought, it might be fine, I just don't know but wanted to point it out as a possibility.

 

[suspectK]

^This is why an actual multimeter is a good tool to have. Rather than using the regulation circuit in the battery/PV to verify your battery is functioning properly, you can do a quick internal resistance check and voltage check on the battery.

 

[cocacola31173]

Well I went ahead and ordered an IGO L 2 mm silica wick and 28 gauge kantal wire. I guess I will just experiment with how many wraps is needed for what I want.

 

[suspectK]

... At room temperature, 28gauge per foot is 5.27 Ohms.

Length and gauge is your concern for resistance, diameter and coil spacing for heat distribution.

 

[JulesXsmokr]

If there's a short in the circuit, the Vamo V3 will display 9.9 on the ohms reading when testing with the + button. It will not fire under those conditions.

It will read a resistance lower than 1.2 ohms, but it will not fire below that threshold, either.

Unlike other mods, the Vamo does not need to "pulse" the coil with a nominal voltage (3.7v) to test resistance.

The Vamo won't work with sub ohm coils or coils that are shorted. It's a nifty safety feature, but at the end of the day you're relying on an inexpensive, mass produced circuit board. That's why I still recommend an inexpensive multimeter. They can be had for ~$20 right now at any box store or auto parts chain joint.

How low of an ohm reading will the Vamo read accurately??
I have to use my ohm meter, cause my PV won't read lower than 1.2

 

[JulesXsmokr]

with 28g. probably more than 14 wraps.. with a 1/16" drill bit - maybe--
try 30g. wire...

 

[Coastal Cowboy]

How low of an ohm reading will the Vamo read accurately??
I have to use my ohm meter, cause my PV won't read lower than 1.2

I've had mine read 1.0 and 0.9 on the same horribly mis-built coil.

 

[bmace72]

There is also several phone apps out there to assist. I use Vaper's Toolbox for Android. It will give you the wire length & wraps for a specific ga. & wanted ohm.

 

[JulesXsmokr]

close, but it needs a bit more: all on your input values..
It would be nice for an app to be able to tell you the wire size, the i/s coil diameter, how many wraps, and how long the legs are, and then tell you the resistance.. That would be an APP...
I don't measure my wire..

 

[cocacola31173]

with 28g. probably more than 14 wraps.. with a 1/16" drill bit - maybe--
try 30g. wire...

So the higher the g of the wire the less wrap I would needs?