3 days ago •
This thick Bowl Ring with no Outlet ("fumet") Collector Holes has a mass around 10.4 g so i'm guessing it's OKay to drop the decimal in "Plan-A" IH-driven Dual-Core Near-Symetrical Reversible LAVACapsule scenarios. Each of the Hybrid Core susceptors was evaluated to weight around 0.75 g using simple calculation, which means the Susceptor to Flux Concentrator Mass Ratio would range around 15 %:
This early in such preliminary process that was meant to evenually lead to my "Plan-A" transition i still don't have access to Induction Heat experiments just yet, though at least i can bet that once a Flux Concentrator's Mass is complemented with that of each Full-Metal tops it should become quite possible to raise temperature in a susceptor pair much faster than in the rest of a LAVACapsule.
Ideally the Bowl Ring must not be allowed to reach beyond 135 °C or so, which means the susceptors may need peripheral support pads in order to loosen up thermal coupling somewhat further...
Having no susceptor alloys handy (much less Curie alloys!) this still seems like a remote concern but i have to wonder how 0.75 g 17-Holes Metal Discs will behave when falling back to "Plan-B", because right now all i got is pieces made of light non-magnetic stainless steel weighting at most ¼ g per unit only...
Nonetheless i feel compelled to pursue my initial goal, step by step, convinced that walking the path is no less important than to reach its intended destination.
Good day, have fun!!
07/11/2019 at 21:12 •
This remains to be put in convenient graphical form but that's requiring more time/energy investment than i can afford to comit at the moment, so here's a simple list reflecting my notes so far...
1st of all my aluminium Full-Length Yellow-flame/Classic Compatible top is crafted into some bulk material rod that measures 26.0 mm x 31.5 mm or 1¼" (dia.) once finished as an outer shell. Its Flame-Catcher side was performed using a large 14.3 mm or 9/16" (dia.) drill bit then i manually shaped it into a conduit of spherical profile. The Base-side (Monobloc cavity) was done using 15.9 mm or 5/8" (dia.) and penetrating no farther than 19.4 mm deep instead - or was it 13.8 mm? That's why i'll need a drawing...
Ayway it leaves behind a ~6.6 mm long path for my Flame-Catcher aperture. Also, there's a 25 mm (dia.) x ~2.6 mm deep annular Base Recess into which i dig a 19 mm (dia.) x 1.6 to 2 mm deep Internal (hidden) Annular PinHole Channel in order to connect with an On-Top Core-PinHole path directly, while an auxiliary PinHole path can be reached from the Base-side connecting to a handle using this "universal" Mating System:
This is actually fall-back compatible, with both internal PinHole paths partly isolated by a "Top-of-Bowl SiC Puck" wrapped in Brass Screen for mechanical support. That way a genuine VG Classic or Bronze Sherlock handle only disables the Base-side path while the finger-resting site on a top remains functional, not to mention such split dual-path strategy proved to be convenient as this is tolerant of permanent leaks (as when no effort is made to gain manual control, for example)...
When installed a genuine-length 20.2 mm tall/deep VG Monobloc effectively separates both annular recesses while a copper O-Ring seals the space between it and my Flame-Catcher aperture; its Screw-Base Mating Disc is nearly 0.9 mm thick so this reduces the Base-side recess to about 1.7 mm deep, with the rest of a Monobloc's Screw-Base protruding over a length of ~1.3 mm if i'm not mistaking. Overall assembly length amounts to 27.3 mm deep/tall, keep in mind a Base-side recess exceeding 2.5 mm may result in friction with its mating handle depending on the model, the Bronze Sherlock handle to be more specific. Total mass of my complete/finished Full-Length cylindrical aluminium top ranges around 43.4 g, while experimenting with a shorter brass version i found it could reach 92.9 g - which is excessive in Near-Symetrical Reversible LAVACapsule scenarios.
Future attempts may eventually aim for some closer emulation of VG's Sphere which is ~35.15 mm deep/tall with a ~40.25 mm diameter.
07/11/2019 at 01:29 •
Electromagnetic injection of a Heat Charge involves considerations about mass, e.g. the more ferro-magnetic metal there is to get "excited" wirelessly the more power an/or time it takes to reach a target temperature. By the way, previous simple evaluations refered to this formula below:
...and also a couple on-line "calculators".
The important idea to keep in mind is that i'm sort of gambling on some hypothetical possibility to perform IH-driven powering of a Hybrid Core (or even a pair if using my Near-Symetrical LAVACapsule layout) based on the difference of masses and in relative absence of thermalization, or at least pulse-mode enough to avoid turning capsules into heaters as well. Actually, looking at preliminary numbers i realize a pair of susceptors don't even represent 2 % of a Full-Length Aluminium LAVACapsule joined by a Bowl Ring which also behaves like a "Flux Concentrator"... For example:
So it we add together 2 alu. tops + 1 ferro-magnetic Bowl Ring with Outlet ("fumet") Collector holes (+ 1 Containment Jacket with cotton inside) then total (heat-conductive) metal mass amounts to almost a hundred grams... Take note if it's IH-driven while airflow is made unidirectional then this should result in 2-stage heating similar to the Sublimator of Enrico Bouchard, which has been claimed to generate a fumet composed of thinner microscopic droplets, in turn offering an easier inhalation experience in principle.
A safety (water-toy) buffer would be most desirable in preliminary testing, just to be cautious while exploring Power "Micro-Bursting" that operates on induction.