VaporChase Review - SmokTech 2.5ohm DCT carto (and what it all means)

[Mindfield]

This is in part a review, but more on the order of an explanation of what the real difference is between low voltage+low resistance and high voltage+high resistance and why the latter really is better than the former for those that have the capability.

[Nomoreash]

Can we make this mandatory for people to watch before they purchase their first first vv. It sure would avoid headaches for those that insist on using LR with VV.

Awesome job and explanation, I'm sure it's going to get many views. I know I'm putting it on my link list for reference to save a lot of typing.

[bseven]

Nice work Mindfield.

[Mindfield]

Can we make this mandatory for people to watch before they purchase their first first vv. It sure would avoid headaches for those that insist on using LR with VV.

Awesome job and explanation, I'm sure it's going to get many views. I know I'm putting it on my link list for reference to save a lot of typing.

Nice work Mindfield.

Thanks! Yeah, seeing people still using LR on a VV or HV device is pretty much why I wanted to explain this in the video, because it didn't really make sense to me why anyone would want to other than by force of habit when upgrading from eGos and 3.7V mods and such and not really knowing any better.

[Goldenkobold]

Dual Coils are such strange things, in practice I vape the 1.5 at 5v...this is giving me 8ish watts per coil and while its probably more vapor than a 3 ohm boge at 5v its not twice the vapor, Certainly not twice the heat.

[Mindfield]

Dual Coils are such strange things, in practice I vape the 1.5 at 5v...this is giving me 8ish watts per coil and while its probably more vapor than a 3 ohm boge at 5v its not twice the vapor, Certainly not twice the heat.

Well, the "twice the vapor" thing is in ideal conditions of course, but as DCCs use up juice, the top coil generally dries out first and the vapor drops so it's not an exact science by any means. Also keep in mind that 1.5ohms @ 5V is pulling 3.3A from the battery. Unless you're using an IMR battery (and presuming the switch on your mod can handle the load), there's a good chance that the internal resistance of the battery you're using may not be able to supply that much instantaneous current, so you may not actually be getting all 8.3 watts per coil like you think you should be.

[Goldenkobold]

I am using a 5v pass through but I just checked and it is only rated for 3 amps. Not sure how that is affecting it probably vaping it at slightly less than perfect. I hear the new Saber touch has a 5amp option for these so you can get 4.7v under load with a 1.5 or you could get a Darwin for 5v on the 1.5....honestly these things are just too much trouble, in my opinion. I would rather vape a 2 ohm boge at 4.2 than these dual coils at 4.7.

I suppose a 7.2v li-ion mod would have no problem running the 2.5 ohm dual coils amp wise?

[Mindfield]

I am using a 5v pass through but I just checked and it is only rated for 3 amps. Not sure how that is affecting it probably vaping it at slightly less than perfect. I hear the new Saber touch has a 5amp option for these so you can get 4.7v under load with a 1.5 or you could get a Darwin for 5v on the 1.5....honestly these things are just too much trouble, in my opinion. I would rather vape a 2 ohm boge at 4.2 than these dual coils at 4.7.

I suppose a 7.2v li-ion mod would have no problem running the 2.5 ohm dual coils amp wise?

Well, it isn't just the rating of the switch but also the internal resistance of the battery you have to be concerned with. If the battery's internal resistance isn't low enough to deliver all 3 of those amps then you're not going to get that. Using an IMR or similar high drain battery then you will though. The switch rating just means that it can handle that much instantaneous power coursing through it without frying.

I don't really see it as being too much trouble, it's just a matter of keeping the electronics involved in mind. And yes, a stacked battery configuration will handle higher amperage much better than a single battery with a booster circuit, just as long as the switch can handle the current too.

[Diagasa]

Great video! This should indeed be required for all dual coil/variable voltage users out there.

[Slurp812]

I don't totally agree. In order to get higher voltages at the carto, more current must be drawn from the battery. Knowing ohms law, and setting the different cartos for the same power will (aside from the voltage boost circuits efficiency) draw the same average amount of power from the battery. The difference , I believe is the heat is spread out across more turns of wire, or in the case of DCC's across two separate coils. For example, say we have 3 cartos. a 1.5, a 3.0, and a DCC 2.0. and all are made with the same size wire. And we drive all of them to 8 watts. And for this example lets assume the 1.5 has 3 coils, the 3 ohm has 6 coils, and the 2 4's in the 2 ohm dcc have 4 each. Now the 1.5 heating element is the shortest of course, and has all of the power (heat) in a very small area. And the opposite end of this example, the DCC 2 ohm not only has longer coils, but 2 of them. A total of 8 turns, laid out in different areas of the carto, thus heating more e-juice, but not as hot in a small area as the 1.5. I believe this would have an effect on the vapor, as well as the taste. What I have also found, is the LR cartos having higher heat in a smaller area tend to get that burnt taste sooner. And in the case of the DCC, the hear is spread out across more coils and can be cranked to more wattage total before getting that burnt taste. Looking at the limits of the ProVari, 2.5 amps, and 6.0 volts, we can calculate the best carto resistance for the highest power, and it comes out to 2.4 ohms. which does make the 2.5's the best you can get for the most output. And dual coils allows you to spread the heat across more area. IMHO....