Switching heads on the vivi nova - what importance are the ohms?

[boipayn]

Hello. I bought a vivi nova tank that came with three different ohm heads. I used the one that was already in it for about a month until it died out. I just switched it to the 1.8 and want to make sure i get the best use out of it but am unsure what all of this means. Im using a 650 eGo passthrough and a 650 ego spinner usually set on 4.0 - thats my standard setting. I really appreciate any responses. Im really new to this. Thanks again.

 

[Kent C]

Hello. I bought a vivi nova tank that came with three different ohm heads. I used the one that was already in it for about a month until it died out. I just switched it to the 1.8 and want to make sure i get the best use out of it but am unsure what all of this means. Im using a 650 eGo passthrough and a 650 ego spinner usually set on 4.0 - thats my standard setting. I really appreciate any responses. Im really new to this. Thanks again.

Lower resistance - lower ohm rating equals more heat (watts) - under a constant voltage. In the 510 connection range, 2.2-2.4 ohm is "SR" standard resistance. 1.5-2.0 would be considered "LR" low resistance. 2.8-3.X+ ohm would be "HR" high resistance (sometimes referred to wrongly as "HV" - high voltage which refers to batteries, not resistance coils, but the intent was to show which attys/coils could be used with higher voltage).

The importance of ohms on a fixed voltage is that if you have different ohm'd coils you can determine the amount of heat (Watts) from your PV. And Watts not only affects vapor production and throat hit but more importantly, imo, flavor. In general, strong flavors require more watts/heat. Light flavors - less watts/heat. High watts on light flavors can wash them out or burn them. On some strong flavors, low watts won't be enough heat to have any or little flavor. Some flavors can take both high and low watts, but taste differently.

So the importance of ohms is how they affect watts. On the other hand, if you have a fixed ohm rating, then the you can vary your watts by varying voltage - hence the VV batts.

And you can get the same wattage different ways:

1.8 ohms + 3.7 volts get @7.6 Watts
3.3 ohms + 5 Volts gets @7.6 Watts

Some would say that you'll burn up less coils and it's easier on the batt, using the last - 3.3Ω + 5 Volts. I prefer the former mostly....

See this chart for your 4.0 volt setting:

http://i.imgur.com/Ohn8o.png

Staying in the green will get you more longevity from your coils and batts. But espresso doesn't come alive below 10W

 

[Katya]

There isn't much that can be added to Kent's excellent explanation. I just have one tiny piece of advice; ViVi Nova is a top-coil model and thus provides somewhat warmer vapor than bottom-coil heads. Start with lower wattage and work your way up. If you use too much wattage with your Novas you may encounter burnt taste and/or dry hits.

Good luck and happy vaping!