Among the unique lineups that give you a glimpse of the early Gunpla spirit, there's something called the Mechanical Model — a product that maximizes the mechanical aesthetic by exposing the frame on one half of the body. Two kits, Gundam and Zaku, were released in November 1981. This kit is the RX-78 Gundam Mechanical Model released at that time, and it looks just like one of those internal mechanic diagrams from an old Gundam comic book brought to life in three dimensions. ^^
First off, 1/72 is a scale you rarely see in Gunpla — it's an oddball one. As the number suggests, it sits between 1/100 and 1/60, leaning closer to the 1/60 side. As you can see in the comparison photos above, factoring in the stand and backdrop, it has about the same volume as a 1/60 kit, and thanks to its larger size, the internal frame could be depicted with a fair amount of detail.
The frame structure only exposes the right side — the left arm and left leg have no frame, just the outer armor. The right arm, right leg, torso, and head have the full frame built in, with only half of it exposed. The mechanical frame design is a bit dated, but considering the molding technology of the time, it's quite well made, and the use of wire parts for detail accents here and there gives it a surprisingly impressive look.
In particular, metal parts and wiring are included so you can insert separately purchased bulbs into four spots — the head, Core Fighter cockpit interior, crotch, and knees — for a lighting effect. I separately bought 3mm diameter LEDs (the same ones used in the old 1/60 kit) and installed them. However, the included wires were too thin to be suitable for power connections, so I replaced them with appropriately thick wires that are easy to find at any electronics store.
The wiring work for the lighting is pretty tedious — it took far more time and effort to route and connect all the wires than it did to actually build the kit. And after all that, when I popped in 2 AA batteries at the bottom of the stand and flipped the switch, the lighting effect was honestly a bit disappointing. T_T If you're not confident about dealing with complex wiring, it's totally fine to skip it.
Separate armor parts are also included for the exposed frame sections, so if you put them on you can build it as a normal 1/72 First Gundam. The gaps at the joining surfaces are pretty noticeable so it doesn't look the cleanest, but the color separation is actually better than the 1/100 or 1/60 versions, so even a straight straight build gives you better visuals than you'd expect.
Since the main point is the exposed frame, articulation is kept to a minimum — the legs are completely fixed in place (literally glued to the stand), but the shoulders, arms, and neck do have basic movement. The weapons are also pretty well stocked, including a beam rifle, shield, and beam saber, plus even a beam javelin.
This kit has such a unique concept, and true to its old-school roots, you get a satisfying build experience and a surprisingly large finished product for the affordable price of ¥2500. The color separation is also better than you'd expect, making it a fun kit to just build straight out of the box without any painting or modifications. That said, given the nature of the kit, painting the frame nicely would make it look absolutely stunning. Either way, this is a nostalgic item well worth recommending to old-school fans who have a soft spot for the romance of the '80s. :-) [ Updated at 2016.7.5 ]
AIThis page was translated by Claude Sonnet.