Coil questions!!!!

[AttyPops]

Attypops i`ve stripped and rebuilt 1.8ohm and 2.5ohm Evod heads and they both have 6 wraps welded to NR wire so it seems they do change the gauge.

Cool. Thx.

I know for atomizers the LR stuff used to burn out faster at the same watts (but maybe it's me).

For evod heads...good to know.

 

[Coastal Cowboy]

Can someone explain to an old fart why "they" keep recommending LR ranges on VV devices?

The 2.3-2.5 ohm stuff generally is tougher and lasts longer and produces a great vape at say 4.2 - 4.5 volts.

The 1.8 or 1.5 ohm stuff just burns out faster, IMHO.

P.S.
Bonus point pop quiz (pun intended): How do they make a lower ohm coil? (think about it)

Maybe I missed something, but I'm pretty sure the OP is using a fixed, unregulated battery system with an average output of ~3.7v. With that level of electromotive force, a 2.5Ω coil will likely produce a cooler, less satisfactory vapor. At 2.2 or 2.0, or even 1.8Ω, the energy delivered will produce more vapor and more flavor.

It's all in the tastebuds of the user, but most folks find the sweet spot a little south of 2.5Ω with a standard eGo battery system.

 

[AttyPops]

^This^ I have a couple 400mAh Vision Spinners, and I run 1.8ohm coils in them at 3.8v. Difference in battery life is 6 hours vs. 4 with 2.2-2.4ohm coils - which HAVE TO BE RUN at 4.0v or above to get decent vapor.

See...that's where it depends. For example, on my regulator, higher voltages are more efficient. It's a bucking, not boosting, regulator though. And for ohm's law (and Joule's law) higher is more efficient.

But for a lot of the buck/boost mods...it doesn't seem so for the same watts. However for your example...the 1st is 8 watts the other is 8.8 watts (using 2.3 ohms) so that may account for some difference.

 

[AttyPops]

Maybe I missed something, but I'm pretty sure the OP is using a fixed, unregulated battery system with an average output of ~3.7v. With that level of electromotive force, a 2.5Ω coil will likely produce a cooler, less satisfactory vapor. At 2.2 or 2.0, or even 1.8Ω, the energy delivered will produce more vapor and more flavor.

It's all in the tastebuds of the user, but most folks find the sweet spot a little south of 2.5Ω with a standard eGo battery system.

OMG. I thought the Evod battery was VV. (goes and hides)

Ignore all attypops questions in this thread....delete...delete...delete.....

 

[Jim Diamond]

Here you go Jim

http://www.e-cigarette-forum.com/fo...7-evod-rebuild-ok-i-know-its-not-rba-but.html

Thanks! JD

 

[cramptholomew]

However for your example...the 1st is 8 watts the other is 8.8 watts (using 2.3 ohms) so that may account for some difference.

And that is the predicament I found myself in, upon my first purchase. I wanted the 400mAh, because if their size, but I couldn't run them very long at all with standard 2.4oHm heads. I switched to 1.8ohms, and they ran another 2 hours. I bought a 650mAh Spinner, and a Twist, and I can run them for hours on 2.4ohm coils, at 4.2v. Size really does matter (when it comes to vaping, and/or batteries).

 

[tzellmer]

Maybe I missed something, but I'm pretty sure the OP is using a fixed, unregulated battery system with an average output of ~3.7v. With that level of electromotive force, a 2.5Ω coil will likely produce a cooler, less satisfactory vapor. At 2.2 or 2.0, or even 1.8Ω, the energy delivered will produce more vapor and more flavor.

It's all in the tastebuds of the user, but most folks find the sweet spot a little south of 2.5Ω with a standard eGo battery system.

In my case, vapor production is more important than flavor. Will a higher ohm produce more vapor?

 

[AttyPops]

That's OK. It's total preference as to ohms on a non-vv device. My bad. So many batteries to keep track of.......
I just did a total brain cramp that's all. Carry on...........

(goes off to make an AttyPops facepalm for just such an occasion)

 

[AttyPops]

In my case, vapor production is more important than flavor. Will a higher ohm produce more vapor?

Less vapor. Because higher ohm = cooler for any particular voltage.

 

[KimchiMonger]

I've used 1.8, 2.5, and 2.8 and the 1.8 by far is the better head for eGo style battery. If VV eGo then I would use 3.8-4.0 range voltage. Good luck

Just tried 1.8 tonight and WOW what a difference! The lower resistance on my eGo 3 volt is the way to go. Awesome vape and flavor of same juice I was using with 2.0-2.5. Immediate results noticeable so far.

 

[tzellmer]

what voltage do you use?