Okay. I got 6ml through it by early afternoon yesterday, but we had a Derby Party to go to and then I finally passed out as soon as we got home and I got the girls to bed, so I didn't have a chance to punch and tank the carto until about 5:30 this morning. I topped off the carto, punched it, and have it swimming in about 3.5 ml. Since I am vaping this carto/tank exclusively for this experiment, I should have the second 6ml through the carto by late this evening or sometime tomorrow morning. I decided to continue on at the 7 watt power level since it will provide a continuous baseline and is a decent "average" of most carto users. I will up the power to 10 or 11 watts once this carto dies--unless I get 15 or 20 ml through it before then, in which case I may just up the voltage to see what happens. While I know the "5ml" number you gave was an approximation based on a best guess, I feel that I've reached a point where observations have become relevant, so...
Equipment:
- Joyetech eVic--to facilitate relatively precise measurements and control of electrical parameters throughout the experiment
- Boge 2.0 ohm regular (35mm) carto--metered at 2.1 out of the wrapper
- Phiniac tank--coloured pyrex in cobalt, with a custom-etched Firefly design, if that makes a difference to anyone
Observations:
- At this point (approximately 6.5 to 7ml) the cartomizer has actually dropped in resistance from 2.1 ohms to 2.0. This is in direct contradiction to the normal observation of slowly increasing resistance over the useful life of a carto. I noticed it immediately after tanking it, and did not think to check the resistance before punching it, so I do not know if this is an effect of the Calipitter Chow or if it is an artifact of the punching process.
- I have noticed no change in the quality or flavour of the vape (other than the obvious improvement of continuous wicking from being tanked).
- I really love the eVic (though this is obviously unrelated to the experiment at hand).
Hypotheses:
It is obviously to early too draw any conclusions since there are no
results at this point, but I have formed a tentative hypothesis based on the assumptions that your experience is repeatable (rather than a bizarre series of coincidences, which is also possible) and that the "common knowledge" of the life-cycle of a cartomizer
* is accurate. The net effect so far is that the eVic has dropped the voltage from 3.82 to 3.74 to maintain 7 watts, so it seems to me that
if the falling resistance of the coil
is an effect of the Calipitter Chow, continued use at the same "level" would result in a burned carto sooner than expected--and that this effect would be heightened at higher voltages.
Notes:
I have put another milliliter though the carto while composing this post and neither the resistance of the coil nor the perceived flavour of the vapour has changed.
* The accepted life-cycle of a cartomizer
as I understand it is that the build-up of "carbonized" material on the coil slowly increases the resistance of the wire and the build-up of thickened juice in the wick and surrounding fluff slowly decreases their wicking efficiency. The result is that over the life of the cartomizer, either the voltage and/or firing time have to be increased in order to maintain proper functioning. The death of a cartomizer occurs when one or more of the following happen:
- Too much voltage is pushed through the coil, resulting in mechanical failure (the coil pops)
- The coils vapourizes the juice too quickly for the wicking to keep up, resulting in burning the juice
- The power through the coil is too high for optimum performance but not high enough for thermal stress to pop the coil, resulting in burning of the surrounding fluff
- Build-up on the coil and in the wick and surrounding fluff increases the thermal mass leading to the eventual "re-vapourization" of the gunk, resulting in a (relatively) slowly increasing burned taste
When (1) or (3) happens it is an acute, catastrophic failure of the
"Ack! Bad carto!" type while (2) and (4) are more of the
"Plbplbplb.... I think it's time to change the carto" thing.