Conductivity... Do You Buy It ?

[Deleted]

Ive been having a rummage around Youtube over the past couple of days and have noticed a lot of talk about conductivity within mech mods...Oh this one hits like a train seems to be the used term, to be honest i dont buy any of it, 

Lets say Mr X is convinced that copper has the best conductivity, fine that may be so, but, people then go and put a stainless steel atty on the top which has less conductivity, so as far as im concerned you lose any of the added copper benifit once it hits the atty, if stainless is less conductive it aint going to carry all that copper goodness to the coil, which as we all know is the last piece in the chain, a far as i can see your mod is only as strong as its weakest point which in this case would be the atty, in comparison to the copper mod that is......  its like joining a thick wire to a thin wire, sorry but i dont buy any of it... do you ??

[Greg]

No @agenthoover your no grasping the theory. If you think of every connection point as a resistance and all these up the resistance increases and the greater the resistance the greater the voltage drop, if you can minimise the resistance at any of the contact points then it's makes it better electrically. The final element does not dictate the efficiency but the cumulative resistance of all elements.

The effect of this is reality is of course subjective but in theory it makes a difference. Copper is one of the best conductors hence it's use for cable, gold and silver have better conductivity than copper but it's prohibitive due to cost

[thatguy]

Each component does have an effect.

Total resistance =resistance of electrical path on mod(including contacts) +resistance of path in atty+coil resistance+internal battery resistance.

To increase the voltage drop and thus power across the coil, you need to minimise the resistance of the other parts of the circuit. So lower resistance materials in the mod will deliver the maximum voltage to the coil. If you intend to go down this path, it's worthwhile to select batteries that display a consistent low internal resistance as well.

[Greg]

robby did a great post on this topic explaining in laymen's terms with pictures and stuff

[Greg]

There you go @agenthoover

allaboute-cigarettes.proboards.com/thread/40391/mech-voltage-drop-important-updated?page=1&scrollTo=699989

[leo]

Not sure if I buy 'conductivity', but have definitely noticed the effects of varying voltage drop on different mech/battery/coil/atty combinations.
Don't know if conductivity and voltage drop are connected... any scientists on here???
Twisted420 did a huge test of voltage drop, but I fell asleep before the end of the vid....................



EDIT: ooh look, all the science appeared while I was typing!! ^^^^
time to read...

[thatguy]

Conductivity is the inverse of resistivity. It measures how well a material conducts electricity.

The higher the conductance of a material, the lower resistance a material will have, so a high conductance mech body material will create a lower voltage drop.

[Deleted]

Im gonna wish i never started this thread, i can feel it in my bones ....lol

[Greg]

Jul 27, 2014 15:19:43 GMT @agenthoover said:

Im gonna wish i never started this thread, i can feel it in my bones ....lol

Well you did ask 

Here an answer in simple terms then - high conductivity is good, you wants lots of it, high resistance is bad you want as little as possible in your mod. If you achieve this then there will be minimal voltage loss (drop) other than across your coil which is where you want it 

[thatguy]

Another note on this matter is that shorter mods and thicker mod walls will reduce resistance and thus voltage drop, so material isn't the only factor.

Copper has lower resistance than Aluminium, and aluminium is better than steel.

[Greg]

Jul 27, 2014 15:25:27 GMT thatguy said:

Another note on this matter is that shorter mods and thicker mod walls will reduce resistance and thus voltage drop, so material isn't the only factor.

Copper has lower resistance than Aluminium, and aluminium is better than steel.

Technically your correct but the values we are talking about here are minuscule, the key areas are physical joints like 510 to battery and 510 to atty and the switch contacts, oh and the threads.

[enjay]

I'm with Gregb on this one for sure, tests have shown no difference between stainless, copper and brass but dirty threads and design of the mod seem to make the difference.

[Deleted]

The bottom line. Is low voltage drop the be all and end all of a satisfying vape?

I agree that making the best of what you've got by regular cleaning of contact points and threads is important, but I have some sympathy with the point @agenthoover makes, chasing the very smallest voltage drop is folly imo

[Greg]

Jul 27, 2014 16:53:50 GMT @scooby said:

The bottom line. Is low voltage drop the be all and end all of a satisfying vape?

I agree that making the best of what you've got by regular cleaning of contact points and threads is important, but I have some sympathy with the point @agenthoover makes, chasing the very smallest voltage drop is folly imo

Of course it's not the be all and end all of a good vape, you can get a good vape with a CE4 and an ego battery but some as enthusiasts like to look at the finer points.

Each to their own but the OP makes some incorrect statements which various members have corrected.

[Deleted]

Yes Greg, but I was was commenting on the gist of @agenthoover opening sentence.

Some 'enthusiasts' look for the finer points and miss the whole point imo, but as you say, each to their own.