"Very impressive vaping performance when set up properly, but several design issues make the setup/reloading far more of a pain, & so imo much less desirable than more conventional designs like the Mesh Pro"
This is a dual mesh device with a more complex deck design than more conventional designs than the Mesh Pro. It's also physically much larger and unlikely to be the cheapest option.
Once set up properly, it does ime perform very well for dimitri emesh, however the design means that both setup and reloading become much more of a chore than otherwise might be needed. Sure, inventive designers may come up with innovative workarounds, but imo these can never completely compensate for the inherent design flaws.
If you are looking for an emesh RDA, I'd say that the Hadron is likely worth considering. But first, I'd suggest looking for a more conventional alternative like a good Mesh Pro, Wotofo PS, or perhaps even the Profile RDTA which has recently been reported as a more annoyance-free & viable option
Dual mesh deck might look impressive at first sight but it introduces several hassles
1. The meshes have to be cut almost mm perfect in both width and length. There is insufficient space to mount in the usual (and more forgiving) mushroom shaped mesh, so mesh lengths need to be cut far more accurately. Also, if one mesh is narrower than the other, then its resistance will be higher and (because it's a series deck) will dissipate more heating power. So handling two unusually small meshes with close tolerances presents an unwelcome installation issue that doesn't exist on more conventional designs
2. Having to load two tiny meshes. Ideally the dimitri should be split equally between the two (so that we avoid smoking leftover residue on one mesh whilst clean vapour is still coming from the other). But even if you consider equal splitting superfluous, the hassles of loading two tiny meshes when accustomed to just one larger one are impossible for me to ignore.
Looks great at first, but two16x6.8mm meshes need to be cut to close tolerances & twice as much of a pain to load.
Two Stage Assembly/Dual Unlike more conventional designs, the Hadron's main body is divided into two sections, both of which have their own O rings. Unfortunately, these have proved annoyingly problematic for me, with the upper set prone to damage, and easily coming off, especially when trying to remove the lower part, which remains an overly tight fit, despite application of VG. This makes loading even more of a chore, which was the final straw for me.
I strongly suspect that all O rings will need frequent replacement.
Multi-stage design introduces a few issues.
Very Impressive Vaping Performance. I tested a procedure described by a Discord member (reproduced below) and found it to work very well for me. Maybe this is a result of the RDSA only capable of assembly when the airflow vents in a certain orientation to the mesh, and I also suspect that the honeycomb style helps create the type of air current eddies which help keep ventilating the mesh at an impressive range of toke speed. But for sure, I have no complaints about vaping capabilities for emesh.
Air vents remain aligned with the meshes like this when assembled
Ensure the meshes are cut as close as possible to the correct size and match each other in dimensions or one will glow brighter than the other.
Single or dual sets of airflow holes can be used. I concur with our Discord member who indicated that three holes open on the single set worked well for the toke rates/wattages indicated below.
Discord Member's Notes On Using The Hadron (wished to remain anonymous)
15mg Dimitri split, evenly between 2 meshes
#200 (75 micron) SS mesh
RDSA ventilation holes set to the smaller set, with all but 3 ports on each side blocked (see pic)
19W Power setting (Geekvape Solo 3, so no SS firmware bug)
approx 5-7 sec gentle toke
Tests performed
15w – Required extremely slow, shallow breathing technique that made it very difficult to get just right. Vaporization occurred but was inefficient and effects were minimal.
16w – Required very careful breath control, though produced more efficient vaporization. Very smooth, no harshness in the vapor, but minimal warmth. Effects were more intense than 15w test, but still minimal.
17w – Required careful breath control, but significantly easier to manage with minimal effort. Produced efficient vaporization. Very smooth, no harshness to the vapour, slight warmth. Significantly more effective than previous tests.
18w – Required minimal breath control. Toke was able to be performed at a slightly-slower-than-normal breathing rate. Very smooth, no harshness to the vapour, more warmth to the lungs. Significantly more effective than previous test.
19w – Required almost no breath control. Toke was able to be performed almost normally
19W seems to be the optimal setup for ventilation/air flow to achieve a comfortable, user-friendly setup that required minimal effort to dial in breath control. 20w could work as well, but my fear based on the experience at 19w would be that it may increase the harshness to an uncomfortable level.
I was able to attain full and efficient vaporization, consistently, at low wattage and without the need for excessive breath control techniques. I see absolutely no reasonable justification for needing to use excessively high wattage settings. Given the ease of use, intensity of experience, and efficiency of vaporization, I see no value that could be added by significantly increasing the wattage, and only significant risk that could be added to the experience.
