OHMs resistance

[A new begining]

Hi all

I gave up smoking 5 months ago by buying my first disposable e-cig from Tesco supermarket. I have tried chewing gum, patches, mouth sprays and then done them all together including smoking 40 a day, got very sick after that last attempt.

Anyway, I cracked it with the e-cig or it cracked me? since that first day I haven't smoked a single cigarette, instead concentrating only on e-cigs. my progression has been swift and along the way have done the e-pipe the EGO 510 cartomiser system (always leaked in my pocket) and now have arrived at what I consider to be a reasonable compromise.

I use an EGO 510 battery 650 mah, I have 1100 mah batteries as well but they just go on too long. The 650 mah is just long enough for a day so it's a nice routine before going to bed putting the old battery to charge and preparing the next bit of kit for the following day.

I have ditched the old leaky cartomiser heads and adopted the 1.6ml short wick V2 and the 2ml long wick V3 clearomiser heads which have never leaked. The only problem with the V3 2 ml head is that it splits into 2 parts and the number of times I have seperated the atomiser from the tank instead of detaching it from the battery and spilled 2 ml of liquid everywhere is growing fast, such a bad design. I may go back to using the short wick sealed system and ditch the V3 if it happens much more often.

Anyway, after all this twaddle, I have a question for the forum. The one thing I can't seem to get my head around is the OHMs resistance if the atomiser and what effect this has on the vapour. the batteries have a constant output which varies a little and dips at the end of its cycle. The OHMs resistance of the coil in the atomiser is variable. One can buy 1.8, 2.4, 2.8 etc. but I can't get my head around what effect this actually has on the vapour. My current ones are 2.4 but I have just ordered som at 1.8 because I want to see what difference it makes.

Can someone please enlighten me as to the reasoning behind the various OHMs resistances.

Many thanks and I am very proud to join you all and say that I am now a successful none smoker .. Clive

 

[wasabi5858]

if the ohm (resistance) is high, your ego batter which runs at 3.4 volt may not heat it properly, thus your juice does not vaporize. You should see more vapor (and possibly taste) from using 1.8 head with your ego battery.

Some people like it hot, so they use 3.7 volt or variable voltage devices to get higher with same ohm, this will usually mean more vapor production and warmer vapor which some enjoy.

so in short, 1.8 ohm with 3.4 volt ok, 1.8ohm wiht 3.7 warmer ok, 2.4 with 3.4volt, cooler, 2.4 with 3.7, warmer. A lot of ppl dial it up to 4volt ish with 2.4 volts head.

I am sure others will come in with more scientific explanation such as total wattage. W = VxV / R

so with your example. 3.4x3.4 / 2.4 you are only doing 4.8 watts (if you use 1.8 ohm head, wattage become 6.4), some ppl vape at 10+ watts.... so they need high resistance coil + high voltage for that warm vapor.

 

[18SixFifty]

I could get into Ohm's law and tell you exactly how much each volt divided by the ohms will put out. But it's really as simple as this. given the same volts the less ohms the less resistance. (ohms resist) The less resistance the hotter the coil will get.

Too hot of a coil and you burn the juice. Too cold of a coil and you have all kinds of other problems. People speak of sweet spots. That is simply the correct amount of heat applied to the correct juice. Some juices vaporize better at different temps.

For myself I prefer a simple 3.7 volt fully charged with a low resistance atty and a 50/50 pg to vg. A five volt battery with a normal resistance atty will also work, by why bother when low resistance atties are all over the place?

Hope this helps.

 

[tobarger]

Without getting too technical.
The ohm is a unit of measure used to define a conductors resistance to electrical current flow.
1 ohm of resistance will allow 1 ampere of current to flow when 1 volt is applied to the conductor.
Voltage(E), Ohms(R) and Amperage(I) are all related to each other and can be calculated by using Ohms Law (E=I*R).
As you have stated, the voltage of your setup is fairly constant at about 3.4 volts.
So changing the resistance will inversely change the current(I) flow through the conductor.
As resistance goes up the current will decrease, and as resistance goes down the current will increase.
Basically
more current=more heat
less current=less heat
The amount of heat that is applied to the juice effects vapor production and taste.
So by experimenting with different resistances you can hopefully discover your "sweet spot", usually defined in watts.
Watts=(volts*volts)/ohms

 

[A new begining]

Good work, I understand all you have written.

As I have no intention of changing the battery set up that I have then it will be better if I experiment with the resistance of the coil. I do feel though that the heads vary a little as both the V2 and the V3 clearomisers (both 2.4 ohms) vape completely differently. The V3 is very mild without any real depth of flavour and the V2 is full of flavour. You just have to keep the wick wet in the V2.

This reaction may be nothing to do with ohms but related to the slightly different construction of the heads. When my V3 1.8 heads arrive I will have more of an idea.

Thanks to you all for you clarification .. Clive

 

[Supacrazyguy]

Be carful with ego battery's and anything with a low impedance , those battery's are not desigened for high current output

 

[Stef64]

Good work, I understand all you have written.

As I have no intention of changing the battery set up that I have then it will be better if I experiment with the resistance of the coil. I do feel though that the heads vary a little as both the V2 and the V3 clearomisers (both 2.4 ohms) vape completely differently. The V3 is very mild without any real depth of flavour and the V2 is full of flavour. You just have to keep the wick wet in the V2.

This reaction may be nothing to do with ohms but related to the slightly different construction of the heads. When my V3 1.8 heads arrive I will have more of an idea.

Thanks to you all for you clarification .. Clive

The difference in flavor profile might be due to a slight difference in coil resistance but is more likely due to the different wicks. Some people claim that longer wicks filter out some of the flavor resulting in a more muted flavor.

 

[tobarger]

I do feel though that the heads vary a little as both the V2 and the V3 clearomisers (both 2.4 ohms) vape completely differently

I just bought atomizers that were supposed to be 2.0-2.5 ohms
They all measure 1.5-1.7 ohms
I've also stocked up on 1.5 ohm atomizers that turned out to be all over 3 ohms
So unless you actually measure them you can not know their actual resistance
You also can not count on the suppliers description being accurate, often they are way off
And a difference of 1 ohm can make a big difference in taste when the voltage is constant
Its no wonder there is a market for $20+ atomizers that measure what is claimed
One of the great things about VV is that you can adjust the voltage to cancel out large and small inconsistencies in atty/carto resistance

 

[A new begining]

That makes a lot of sense tobarger. the stocks I have need to be measured, I have a meter so I will give it a go.

Ohms law is one thing but common sense is wonderous .. Clive