A post mortem was conducted this am on our beloved friend. These are the results.
Dis-regard the scorched marks on the length of the batting, this was saw cutting the chest cavity open as well as the scorch mark on the right of the "protective sleeve"
However, during post mortem there was clear evidence of scorching, burn
through of the batting, Although the protective cover (small piece) shows evidence of scorching, no hole was found and it did do its intended job, prevent burn
through. OTOH whilst the protective sleeve did its job, the heat generated was sufficient to burn a hole in the batting as can be seen in the pics (upper right corner).
This is the evidence displayed by the deceased, what may have cause this to happen based on its life?
Not having conducted a post mortem on the regular 510 cartos it is difficult to say what caused its premature demise. However based on the data collected to date, opening the chest cavity leads us to some possible conclusions:
- It is my opinion that the coil in this particular carto was improperly constructed. One side of the coil was up against the end of the wick. This is an important find as this tidbit of information as been discussed in the past that sufficient wicking material need to be in place at the end of the coil (atomiser mods sub forum) to prevent the coil ends from overheating;
- The wick barely extends past the coil, which is uncommon for most atty as we can clearly see the wick in standard 510s;
- there is clear evidence of carbon build up on the coil, leading to extra current draw, especially at high voltage;
- from testing and as one of my fellow testers have found out, they require topping off quite often, compared to the regular cartos. Topping off at a rate of 10-12 drops whilst a fresh charge is 35 drops, results in 2/3 unusable fluid to the user. In normal circumstances this unusable liquid sits around 20-25% or at best 1/3;
- the aforementioned observation leads me to believe that the batting did not merely hold the liquid in suspension, but held it in. The wickability of the batting is questionable;
- I believe a longer wick might have improved the wickability of this carto; and
- the protective sleeve did its job.
Disclaimer: The following observations are intended for the review of this particular carto only. To encompass the remaining cartos still in testing alongside this review would be presumptuous and pure conjecture.
What kind of life did Silver lead?
The fine bouquet of RY4 was delivered to my senses in clouds of fresh flavourful vapour. I do not use clouds of vapour very often in my observations or descriptions, to do so means what it states: Clouds of Vapour. All this with a straight Dekang liquid which is said to have an 80/20% PG/VG ratio, not dissimilar to my own liquids.
It performed extremely well on the eGo and on my 3.7V box mod. At 5V (4.6V under load) a burnt taste was noticed. Use at 5V was discontinued and previously mentioned device were used for the duration of testing until the BeGo was completed.
With the BeGo, tha maximum this carto could withstand was 4.2V loaded. Anything over 4.2V started to render the burnt taste, even with a fresh top off. Based on the autopsy it is evident that burning did occur and not solely the liquid.
I did not try these cartos at any voltage higher than 5V because of the observations and experiences at 5V. To vape at a higher voltage IMO would have been reckless and absolutely worthless - if it is burning at 5V, it will definitely burn at 6V or higher.
I do not like using other products for comparative purposes, but at times a picture is worth 1K words. If we take the KR8 mega cartos, it can be clearly seen that the wick extends an enormous amount past the coil. In my learned opinion this permited greater wickability of the carto in general, it covered a greater area, and the majority of the liquid charge available to the vaper.
The batting was similar to what is found in the reg 510 cartos. (verified against a reg 510 carto, both 510s have this build method) IMO this is an important observation, because the reg 510 flow and wick extremely well. That being said, vapour production of the regular cartos leave allot to be desired, comparatively speaking.
Because their is barely any wick extending past the coil in this test subject, it can be concluded that only the liquid present at the coil would vaporise, and only the top 1/3 of the carto usable (pics substantiate this). It was also observed that after a rest period where the liquid was once again allowed to permeate the remaining batting, one could vape once again. That being said, this was for a couple of hits before VP and taste started to wane.
In conclusion it is my learned opinion and experience, that this particular carto, in its present configuration, is not designed to be vaped at HV as intended. Would the carto perform better if some of the observed flaws are corrected? I honestly do not know, but in its present configuration with the "blanket" vs polyfill, I doubt it.
This carto is a great performer second to none I have had the peasure to try, but it still requires some looking into if its life is intended as an HV carto.