Phase two of my experiment is under way, as I now have both cartos refilled, again with the same methods are they were first filled. I have them both beside me now, still labeled, but I'm trying to avoid looking at the labels as I randomly pick up one of them, with some attempt at equal alternation. I try to not look at the labels because I don't want to put a bias on my opinions of the tastes as I attempt to see if one tastes different than the other. So far, no difference is detected.
One side note, I posted in the first phase that the one filled with a needle leaked at the battery seam, where battery and cartomizer are screwed together. This time, it was the one filled from the threaded end that leaked at that seam. So, this points to there being no difference... so far.
In this experiment, I am leaving the one filled from the battery end completely unaltered. No piercing of the fill port, the barrier still in place. The one filled with a needle, I put the barrier back in place after filling, as most people would do.
Here is a visual aid, showing the exploded view of the cartomizer beside the assembled view. You can now see where the "barrier piece" fits in the the assembled view, with the mouth piece on top of it. The barrier has a little plug in the middle that nestles into the fill port. This barrier is intended to keep juice from being drawn into the mouth, and it has two small holes in it, about the diameter of a paper clip, through which air passes, allowing vapor to pass through it. It works rather well, but if you overfill the carto, using any method, you'll still get juice coming up from below, through the air flow duct that runs along the side of the cartomizer from the atomizer at the bottom to the mouthpiece chamber at the top. It's half-moon shaped and runs along the side of the carto.
Here's a picture showing approximately how air flows from the atomizer at the bottom, up along one side of the carto body through an air flow duct, and into a chamber surrounding the fill port, up through two small holes in the barrier (kind of like the holes in a man-hole cover), then out through the mouthpiece.
I hope these visual aids help some people to understand the construction of the Joye cartomizers. As I said previously, the main picture here is from Joye, showing the fill port of the eGo cartomizer. But since the construction of the eGo and 510 cartos is so similar with the Joye products, the illustration is pretty accurate for the 510 carto.
Hope this helps.
BTW, I've been sitting here vaping my refilled cartos, one from syringe fill and one from threaded end fill, and I can still taste no difference. No TF difference either, and no leakage from either one, once I wiped up from the initial leakage I described above.
I'll continue this experiment through vaping both these cartos equally until empty, then repeat. I'll keep you posted.
