VW/VV —.Clarification Questions — Can you get sub ohm coil results?

[AwaxJago]

Researching VW/VV mods, though I am unsure about how that works with sub ohm coils. I've read that they won't fire sub ohm, though, with the VW/VV I am guessing that is not an issue. I've found that my sweet spot is a fully charged 3.7V battery (lets say 4.2V; meter on the list of "must buys"), running on dual 28 gauge 1.4 ohm coils (.7 ohms, have that meter at least ;P); then that's 4.2V, 6A, and 25.2 W.

VW — If I wanted to get the same results (vaping quality) on a VW device, and had to use a 2 ohm coil, would I then just set the Watts to 25.2? That would be 7.01V, 3.55V, and 25.2W. Would that produce similar vaping results?

VV — If I wanted to get the same results on a VV device, and had to use a 2 ohm coil, would I then just set the Volts to 7.01V? That would be 7.01V, 3.55V, and 25.2W. Would that produce similar vaping results?​

I've recently gotten a mech mod, and I'm working on building the .7 ohm coils consistently before messing around with more/less resistance. I am very happy with the results. I am a PAD smoker, today I've been home for 5 hours and had one 'social' analog with a neighbour ~ completely unheard of for me ~ I'm normally trying to hold off so I don't smoke a pack+ at this time of night.

Any help, advice, or clarification about how to achieve similar to sub ohm results on VW/VV devices would be infinitely appreciated!

 

[kiwivap]

Hi AwaxJago - this really depends in the range of the vw/vv mod, and the capacity of the battery you use. Most vw/vv mods haven't been designed for sub ohm vaping and have a cut off point. That may be changing though with some of the newer mods coming out.

The new DNA 30 mods which are appearing now can go up to 30 watts. There's also the Sigelei 20 and DNA 20 which go to 20 watts. And there are mods which in AVG instead of RMS can hit up over 20 watts. Previously mods had a 6 volt limit. Now that is changing. For example, specs for the DNA 30 show a maximum output voltage of 8.3 volts.

You would need to use ohms law and work out the watts you require and whether your device can give that kind of power, and also the amps and then check your battery and device amp limits. e.g. some devices have a 3 amp trip limit, some a 5 amp trip limit, etc.

On variable wattage and voltage - If you set it at certain wattage, it reads the ohms of your attachment and then sets itself to the right voltage for the power (watts) you set.
If you set the voltage then it doesn't adjust - so you can either calculate the watts you want or go by taste.
Either way don't start with a high setting - start low and work your way up.
There's a link in my sig below with a bit more explanation.

 

[Baditude]

Variable voltage and variable wattage get you to the same place, they just use a different route to get there. On a regulated device, you will be either in voltage mode or wattage mode at any given time.

Variable voltage mode will require you to be aware of what the resistance of the coil is, and then do some math to find the ideal voltage to use. For example: the ohms plus the number "2" formula. 2 ohm coil + "2" = 4 volts.

In variable wattage mode, say you know from experience you like to vape at a certain wattage. Set it and forget it, even if you change atomizers which may have a different resistance. The processor will recognize the change in ohm resistance, make the calculations and make the necessary adjustments to continue to give you the previous watts that you set originally.

No regulated mod goes up to 7 volts. 6 volts is the optimum voltage level.

Ohm's Law Calculator

 

[AwaxJago]

Thanks for the replies!

Kiwivap, thanks for the info. I was using ohms law calculator to pose my question. I was also looking over the graph Baditude posted, but in another thread, to help figure out the question I was looking to ask.

I just don't have anything to relate it to, as the best experience I've had before going sub ohm was with my aerotank and 2 ohm coils, though it didn't really do the trick for me (the trick being, keeping me away from cigs).

I guess what I'm getting at is, as I've been reading about the DNA 30, and the other 20W VW devices out there, I am wondering if it will produce the effects I've decidedly enjoyed so far with .7 ohm coils. Being new to mech mods, and jumping right into sub ohm, I am at a bit of a disadvantage as I do not know what dripping on a 2 ohm set up on my current device would be like. Looking on the chart, with a fully charged battery it would be running at about 8.82 watts (in the red, just).

Thanks again

ps ~ for info's sake, I'm running a Nemesis (hcigar), with a IGO-W5, dual 1.4 ohm coils (.7), and either efest 1000mAh 18500 3.7V (15A) or efest 2000mAh 18650 3.7V (10A)

 

[kiwivap]

Thanks for the replies!

Kiwivap, thanks for the info. I was using ohms law calculator to pose my question. I was also looking over the graph Baditude posted, but in another thread, to help figure out the question I was looking to ask.

I just don't have anything to relate it to, as the best experience I've had before going sub ohm was with my aerotank and 2 ohm coils, though it didn't really do the trick for me (the trick being, keeping me away from cigs).

I guess what I'm getting at is, as I've been reading about the DNA 30, and the other 20W VW devices out there, I am wondering if it will produce the effects I've decidedly enjoyed so far with .7 ohm coils. Being new to mech mods, and jumping right into sub ohm, I am at a bit of a disadvantage as I do not know what dripping on a 2 ohm set up on my current device would be like. Looking on the chart, with a fully charged battery it would be running at about 8.82 watts (in the red, just).

Thanks again

ps ~ for info's sake, I'm running a Nemesis (hcigar), with a IGO-W5, dual 1.4 ohm coils (.7), and either efest 1000mAh 18500 3.7V (15A) or efest 2000mAh 18650 3.7V (10A)

I haven't used a DNA30 either. I don't see why it would be any different within its limits - I'm inclined to think if anything the stability given by regulation with a DNA 30 would be a bonus. No voltage dropping.

I'd like to read more user reports - but you know, the quality of the vape is a lot to do with the wick and coil too, and if a regulated device can handle your RBA within its limits then it should be ok I would think. e.g. The DNA30 has max 8.3 volts output.
So say we put a 0.5 ohm coil on there at 20W - should be ok, and the amps would be 6.324. It has a 10 amp limit so ok there.