No place like ohm

[Mawsley]

I thought my post in an Evod thread had become lost and I'd like to get some pronto so I'm starting this thread.

I was about to order a couple and suddenly noticed that there was the option of 1.8 and 2.2 ohm replacement heads...and that Fasttech's are 2.6 ohm.

And then I realised I have no clue what difference that makes.

I know V=IR but I'm clueless as to its effects on vapour and taste...someone please educate me.

Thank you

 

[ecignet]

throw a big spanner across the battery terminals of a car battery.
big sparks, spanners gets hot,if you are lucky it'll melt/explode. Film it for youtube

that is zero ohms. AKA spectacular short circuit. Mega heat.

so...
More ohms, on a standard voltage=less heat.

thats the easiest explanation I can come up with

edit to answer your actual question: depends on the juice, and your battery and so on really...on a broad scale, I prefer 2.0 or 1.8 on ego types...it gets them crackling enough to make the vapour yummy for me. Each to their own though, that is why we have this variety

 

[Vapemonkey1980]

Are you using an ego battery Mawsley?

If so, probably go with the 1.8 heads. 3.7v through 1.8ohm = happy days

3.7v through 2.6ohm = far less happier days, as the battery has to work harder to heat the coil.

Ish....

 

[Blossom]

Does that mean that with higher Ohms you can use higher voltage on a vv? Sorry, didn't listen enough in physics lessons, never thought I'd need this kind of info!!!

 

[Vapemonkey1980]

Does that mean that with higher Ohms you can use higher voltage on a vv? Sorry, didn't listen enough in physics lessons, never thought I'd need this kind of info!!!

In a nut shell.

I certainly am no physicist, but i have played lots

2.8ohm coil you CAN whack up to 6v

Conversely, if you try using a 2.8ohm coil at 3.7v it is most likely to be hugely disappointing, and give the vape equivalent of a gnat fart in the sahara.

Other way round, if you use 6v on a 1.8ohm coil you are looking for grief, but 3.7ish is pretty cool

 

[ecignet]

kinda got it right Blossom.

you can play around here to see the numbers
http://www.ohmslawcalculator.com/ohms_law_calculator.php

but the gist of it is, you can get the same vape from e.g. 3.7v and 1.9ohm (this is around 7.2w) as
4.2v and 2.4ohm (7.3w)

BUT, if you plumb these numbers into the calculator, you will see the amps value changes....the higher V and higher ohm=less amps (so your battery isnt working so hard=longer battery life)

 

[Mawsley]

Sorry, should have said - yes, it is on an Ego battery - but I'm also interested for when the Vamo arrives in the next day or so.

Thank you all for your contributions

 

[Mawsley]

...and I'm right in thinking that I'm not going to get 6V out of a 3.7V 18650?

 

[ecignet]

you do..on a vv or vw mod.

probably google for "buck boost" as a start...old circuit to boost the output of batteries to different voltages.

the modern world:-)

 

[Vapemonkey1980]

...and I'm right in thinking that I'm not going to get 6V out of a 3.7V 18650?

Pretty fecking close to it mate.

P Busardo did his full test on the vamo. One 18650 was pretty close upto the early to mid 5v range.

With 2 18350s it was 6v