Mechanical vs. VV/VW Wattage

[eMats]

I was wondering what the difference is between mechs and VVWs as far as vaping at certain wattages. I find using the same liquid, that my mechs at 15 watts (using an ohms law calc) is best and using a VW I can only go up to 11 or so watts before I get a burnt taste. Why is that?

The comparison was done using a Chi/KFL (1.1 ohm) vs. Vamo 5/Protank 2 (rebuilt head at 1.8 ohm)

 

[pmcode]

Are you using the same gauge wire on both? I have noticed, that if I build the same resistance coil, but with different gauge wire, the higher gauge seems to burn my juice easier. Especially thicker, or sweeter/more sugary juices.

I think it would be because, with higher gauge wire, you need less wire to get the target resistance, less surface area, "hot-spot" kind of effect. Lower gauge wire, more wraps to hit same target resistance, more surface area, less "hot-spot" effect.

If that makes sense........

 

[eMats]

Actually opposite. I use 28 g on the KFL with larger coil diameter and 30 on the Protank.

 

[tj99959]

With a mechanical you change the resistance to change what you get. So look at a mechanical as being VR instead of VV/VW.

The example you gave is compairing apples & oranges, a KF and a PT are different animals. That plus the fact that a VAMO will only say that it's providing xx watts, who knows what it's actually providing. Also with the mechanical, how did you measure the voltage? Use one of these, so that you are calculating using the actual "under load" voltage.

 

[eMats]

With a mechanical you change the resistance to change what you get. So look at a mechanical as being VR instead of VV/VW.

The example you gave is compairing apples & oranges, a KF and a PT are different animals. That plus the fact that a VAMO will only say that it's providing xx watts, who knows what it's actually providing.

I know they're different animals but what's the logic behind it? I was thinking the same about the Vamo.

 

[eMats]

Ok, voltage under load would be 3.5 v which gives me 11 watts so it's the same. I didn't realize you had to use voltage under load instead of actual voltage of your device only.

 

[tj99959]

I know they're different animals but what's the logic behind it? I was thinking the same about the Vamo.

A 3 ohm carto would FRY at 15 watts, while a 3 ohm RBA could be in 7th heaven at the same wattage.
All depends on the build. Volts-ohms-watts are only part of the equation.
Thermodynamics is a branch of natural science concerned with heat and temperature and their relation to energy and work. It defines macroscopic variables. Even the length/diameter of your drip tip will alter the thermodynamics.

 

[Hiding]

The other thing to consider is that the protank isn't going to wick as quickly as the kayfun. You don't get enough juice to the coil it's going to get hot and burn.

Try comparing the KFL on both devices. Or the protank on both devices.

 

[eMats]

The other thing to consider is that the protank isn't going to wick as quickly as the kayfun. You don't get enough juice to the coil it's going to get hot and burn.

Try comparing the KFL on both devices. Or the protank on both devices.

This makes sense too. Thanks.