Wattages confusion

[danield2332]

So, planning on getting the nautilus today and watching some reviews as I am sure I am not the only one that loves to hear people say good things about a prospective purchase, and then one of the reviewers is running the 1.8 ohm coil (1.9 on his provari reading) at 15 watts....

The owner of the vape shop near me, and any chart I have searched for online says that is quite a ways into the danger zone....soooo am I missing something? I tried my standard aspire bvc on that and it was a nice vape, but I could tell it could go at any minute....why is he sticking with that wattage and not choking out on camera from the burn? The vape shop near me is great, but only for hardware, the juice is made there which is good but he does not steep it, there is barely any flavor unless you request more and then there is apparently more things you have to take into account for ejuice, plus my coils burn out soooo quickly with his juice, no matter the mix.

 

[djsvapour]

The owner of the vape shop near me, and any chart I have searched for online says that is quite a ways into the danger zone....soooo am I missing something? I tried my standard aspire bvc on that and it was a nice vape, but I could tell it could go at any minute....why is he sticking with that wattage and not choking out on camera from the burn?

You are rightly confused. The "charts" are now way out of date and refer to all the stuff we used to use. You cannot take a Kanger single coil Protank anywhere near even double figures for long - it'll be dry hit city and then a kick down the road to coughsville.
15 watts is possible with Nautilus, less easy with standard BVC, pretty tricky with Kanger dual coils and out of the question with Kanger single coils.

I don't know what "burn" you refer to? 15 watts with a GOOD atomizer is just lots of vapour and lots of flavour.

 

[vince01]

The best advice is to start low and work your way up till the taste and vapour are what you're looking for.The only time I notice the wattage is to make a mental note of a particular juice in a particular tank when it tastes right

 

[State O' Flux]

So, planning on getting the nautilus today and watching some reviews as I am sure I am not the only one that loves to hear people say good things about a prospective purchase, and then one of the reviewers is running the 1.8 ohm coil (1.9 on his provari reading) at 15 watts....

The owner of the vape shop near me, and any chart I have searched for online says that is quite a ways into the danger zone....soooo am I missing something?

"Danger zone" tends to be applicable, mostly in a past tense. Those old charts are beginning to cause more trouble than help... as they applied to primarily the low cost clearomizers and cartos, rather than the current line of low resistance and/or multiple coil glassomizers... not to mention the wild card builds for RBAs.

You can apply a good amount more than 15 watts to a 1.8Ω atomizer... if you take into account all the variables. Primary variables are net resistance... and wire gauge. Two 1.8Ω coils, one of 28 gauge wire and one of 32 gauge, require different wattages to produce the same heat flux value. ("Heat flux" is a measurement of radiant heat produced, in milliwatts per square mm of coil surface area)

Using the Steam Engine modelling calculator (see hyperlink below)... a single coil, 1.8Ω atomizer made with 32 gauge will produce a very warm 595 mW/mm² at 15 watts. It takes 60 watts applied to a 28 gauge, 1.8Ω coil, to produce a similar heat flux.

Does this mean that juice flow (capillary action) to wick-in-coil can keep up with that much heat? Not necessarily. One must adjust current applied to find a happy medium between desired "warmth" of the vape and adequate juice flow for the individuals subjective vaping habits.

This is where @vince01's recommendation comes into play. ;-)

 

[dw117]

So, planning on getting the nautilus today and watching some reviews as I am sure I am not the only one that loves to hear people say good things about a prospective purchase, and then one of the reviewers is running the 1.8 ohm coil (1.9 on his provari reading) at 15 watts....

The owner of the vape shop near me, and any chart I have searched for online says that is quite a ways into the danger zone....soooo am I missing something? I tried my standard aspire bvc on that and it was a nice vape, but I could tell it could go at any minute....why is he sticking with that wattage and not choking out on camera from the burn? The vape shop near me is great, but only for hardware, the juice is made there which is good but he does not steep it, there is barely any flavor unless you request more and then there is apparently more things you have to take into account for ejuice, plus my coils burn out soooo quickly with his juice, no matter the mix.

15 watts on a nautilus, especially a BVC coil (make sure you get these and not the older BDC), is fine. Not sure why your local vape shop thinks it's a highway to the danger zone. Ahem sorry.

I suppose like other people have mentioned he could be thinking about that wattage from back in the day when cartomisers or earlier clearomisers weren't capable of handling 15 watts.

And like others have said the best thing to do to start off with is start off at a low power and work your way up until you're getting a satisfying vape for you.

 

[sixstringer85]

on the side of the BVC coils under where the it says either 1.8 or 1.6 ohms resistance, there is a voltage range that the coils are designed for. I believe it is 3.3V - 5V.
If you exceed 5V (which on a 1.8ohm coil would be more than 13.9 watts, and 15.6 watts on a 1.6ohm coil) then I find you can get a burnt taste.

I personally use the 1.6 ohm coils on a regulated box mod, and my usual wattage is 14.5 watts, giving me a comfortable 4.88V. I'm not pushing the coil, and my vape is perfect (for a non rda atomiser).

 

[rurwin]

Ye olde Protank single coils were recommended for use at about 5-6W. A dual coil splits the power in two, so theoretically a dual coil atomiser should take twice the power of a single coil. So 10-12W.

In practice, the wicking is sufficiently different that this is only a very rough guide.

The Nautilus also has variable airflow, which can be used to change the wicking efficiency as well as the temperature of the coil for a given power.