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Earth Eagle 145WD is a Balance-Type Beyblade released as part of the Hybrid Wheel System. It was released in Japan as Earth Aquila 145WD in September 2009 for 893円.
Face Bolt: Eagle
Main article: Face Bolt - Eagle
The Face on this Beyblade depicts Aquila, one of the 88 constellations in space. In mythology, Aquila represents an eagle, which is featured on this Beyblade's Face Bolt.
Energy Ring: Eagle
Main article: Energy Ring - Eagle
Aquila was first released in a translucent purple colour. Each side of this Energy Ring represents an Eagle's pair of wings, with the notches on either side representing its head. It was clearly designed to fit with the aesthetic of the Earth Fusion Wheel with its two spikes/notches fitting nicely over the small notches on the inner section of Earth.
Fusion Wheel: Earth
Main article: Fusion Wheel - Earth
Earth has four thick, textured wings surrounding its perimeter, with each pair facing each other on a slight incline. The space created between the wings is quite small, and the resulting effect is similar to any Wheel that has no spaces: minimal recoil. Though it is on the lighter side of Metal Wheels, its almost unperturbed circular design, and minimal recoil made it one of the best, Defense-oriented Wheels available for competitive play. However, it has since been severely outclassed by the extremely heavy 4D Metal Wheels and Zero-G Chrome Wheels paired in Synchrom, such as Duo, Revizer and Genbull.
IMPORTANT: Mold Variations
Earth Fusion Wheel (second mold) Earth has two different molds. The first mold was released in BB-47 Starter Earth Aquila 145WD, and the second in both the purple WBBA "Event Special" MF Earth Aquila 105HF/S, and SonoKong manufactured Earth Fusion Wheels. However, TAKARA-TOMY has since ceased production on the first mold, thus making it a difficult part to obtain. The second mold addressed breaking problems that the original mold faced by modifying the inside of each of Earth's wings. The new mold is up to three grams heavier than the old mold (30-31 grams versus 33 grams on the new mold), which makes it significantly more effective for Defense customizations. Therefore, the new mold is the preferred choice for Defense customs using Earth, while the original mold would be the best for Stamina.
Use in Defense Customisation
Earth is best utilized in the top-tier Defense customization, MF-H Earth Bull/Kerbecs BD145CS. Earth's low recoil can be put to good use in combination with BD145 which prevents many KO's by top-tier low track attackers and adds a fair amount of weight making it difficult to knock around. CS, being the tallest Defense Performance Tip currently, is the only suitable choice in combination with a BD145 in normal mode and due to BD145's weight, it makes up for CS' lesser defensive prowess compared to the completely rubber tip, RS. When you add Bull or Kerbecs for extra weight along with MF-H you essentially have a very low recoil, decently heavy defensive beyblade which can withstand attackers from all heights. Nevertheless, even Basalt outclasses it due to its sheer weight, rendering Earth completely useless in the metagame.
Use in Stamina Customisation
Earth also has exceptional Stamina capabilities because of its low recoil and good weight distribution. Earth can be utilized in the top-tier Stamina custom, Earth Bull AD145WD. Bull is chosen due to it being one of the heaviest Fusion Wheels with with a great distribution of weight.
Spin Track: 145
Main article: Spin Track - 145
145, along with its variants (C145, DF145, etc.), was once the highest Spin Track available, until the 230 Spin Track was released with Flame Byxis 230WD. It can be used in Stamina customs to great effect due to its tall height, which allows for more wobbling as the Beyblade loses its spin velocity. However, gimmick-paired Tracks such as BD145 have immensely outclassed their original bare variant, as have several taller gimmick Spin Tracks, against heavy, mid-height Attack customisations. Even in Stamina battles, 145 does not offer enough balance: Spin Tracks such as AD145 and WD145 provide a good center of gravity, and aid with a slight downforce to maintain stability.
Performance Tip: WD
Main article: Performance Tip - WD
This brings numerous advantages, but also some disadvantages when compared to the other “Defense” Performance Tips, specifically D. The advantages include its ability for abnormally long precession times due to its massive width that reaches the edge of the Performance Tip's perimeter. This allows it to wobble at a significantly larger angle for a longer period of time than D, and at a much lower spin rate. However, depending on the position of the Beyblade using WD and the spin rate of the opponent, this can be disadvantageous because of how easy it becomes to knock over the precessing WD custom. This low spin rate towards the end of the battle is created because in the process of wobbling at such a large angle, more friction is made with the stadium floor, thus decreasing its Stamina. Nevertheless, this is more often an advantage than it is a disadvantage.
Newer parts such as CS, EDS and B:D have overshadowed WD to some degree: CS and EDS due to their ability to be paired with the popular BD145 Spin Track without scraping, and B:D because of its height and even longer precession times, but WD is still one of the best pure Stamina Bottoms available. However, when selecting high Spin Tracks such as TH170 and 230, WD's tendency to wobble at larger angles should be kept in mind, as its extreme precession can often become problematic.
Although the name suggests defensive characteristics, WD does not possess any inherent defensive qualities. However, its proficiency can be increased significantly when facing left-spin Attackers through the utilization of the Weak Shooting technique.
Use in Stamina customization
WD is arguably the best of the “Defense” series of Spin Tracks, and its effectiveness can be utilized in the custom Phantom Bull AD145WD.
Earth Aquila 145WD uncustomized is a quite strong Stamina type by itself, and, taken separately, Earth used to be top-tier in Defense, and 145 serves no purpose anymore due to its lack of gimmick. Even if WD remains top-tier, it has been released in many subsequent Beyblades and Sets. There is little or no reason to buy this Beyblade, aside from collection purposes.