Rules for mag shields can be found here.
The most common of field manipulation technologies in the Solar System it enables travel through the Kessler Belt and it graded from 1 to 7. One common misconception that magnetic shields are just pure repulsive energies. Instead it uses charged dense particles and suspends them at a distance from the surface. These now highly charged particles are rotated at near the speed of light around in a sphere (quality of shield is more dictated by how small the field is, as a smaller field means faster acceleration. Which in turn gives it more force to stop potential impacts). These now kinetically charged atoms collide at extreme speeds with any obstacle in its way. Each mag shield is good at stopping small projectiles and thermal energy. It suffers from the inability to defend against constant fire as it takes time for the field to fill out again. The 7 grades do a multitude of things, each of those grades have specialized shields that are side grades, but ultimately have theses characteristics.
Grade 1 (red): The smallest shields, it uses a single layer of iron atoms. They can be seen on off world ships and high end gears. It provides fairly strong protection from most small projectiles. They are expensive, but generally come standard stock on most equipment created after unification. Its field can be made into a sphere or cylinder to accommodate terrestrial vehicles, but cylindrical fields cost more energy to maintain and often suffer in strength for it.
Grade 2 (green): Medium shields, it utilizes a single layer of copper atoms. Most commonly seen in military operations on frigates or other large vessels. It is also found on the very powerful gears. Same as grade 1 shields, it can also be a sphere or cylinder.
Grade 3 (bluish white): Tac shields, a single layer of silver atoms. This incredibly valuable shield is only seen on destroyers or other specialized military vessels. It is the strongest shield a gears can possibly equipped with. They boast the strongest “small shields” available. Is the last of the cylinder shields, but it boasts full control of the field down to a a quarter meter. This allows strange and specialized shapes on the fly. Often these can be seen as a traditional medieval shield of energy. Also some enterprising engineers have modified grade 3 shields into offensive weapons…
Grade 4 (bluish grey): Large shields, the clunkiest and first shields ever made. They make use of a single layer of Lead atoms. This is only seen on very large vessels like battle cruisers and cities. There have been gears outfitted with this shield, but they have all been decommissioned due to their ineffectiveness against the smaller more agile gears found on the battle fields of today. They can only be found in sphere configurations, but some home modifiers have found ways to get other shapes.
Grade 5 (mirror like): Torrent shields, suspended mercury, these shields are the only one that uses a liquid as its suspended material. Often called mirror shields, they are found on only the most rare and exotic gears and ships. They also have the high prestige of “unbondable”, every shield here suffers from a weakness to bonding weapons, except this one. This weapon fires stabilized mercury, which aggressively bonds to any metal shield. Due to this property grade 5 shields are much sought after. It is exclusively a sphere configuration shield.
Grade 6 (green): Line shields, they are a multi-layer shield consisting of Platinum, Gold, and Uranium. These neigh impenetrable shields are on space stations geared for interplanetary war. Only the Empire, the Colonies, and Station 0 have operating Line shields. Only found in sphere configurations, but due to its multiple materials it has a “thickening” nature. This allows it to take much stronger and more frequent shots from the same location for longer.
Grade 7 (chromatic): X shields, exclusively found on Silent Lines, their strange and unique properties are hardly justified as traditional “mag shields”. But they are not quite their own category. They are poorly understood and are just lumped together as “unknowns”. Found only in spheres, it’s speculated that how the Silent Lines get their abilities is from the manipulation of shape, speed, and position of their field.
Application: Mag shields use actual matter to do most of the heavy lifting instead of the field. As such that stuff has to come from some where. Each vehicle equip with a mag shield is coated in a many layer thick surface of that specific material. It is then pick up by the field and suspended at the appropriate distance from the generator. After which time it begins rotating those atoms at a uniform speed. When active anything that touches the shield is “annihilated” as it is violently thrown away from the field. Only grade 3 and grade 7 shields are capable of lowering their shield in a area to manipulate the environment (pick up a rock for example). Shields need a certain amount of time to activate each one different then the next.
Lorentz factor: Due to the nature of mag shields being a whirling mass of metal at the end of the day it suffers from what gives it strength, the Lorentz factor. The Lorentz factor is the relativistic changes a atom undergoes when it is moving at very high speeds. It changes by which it is in time, length, and relativistic mass. All this amounts to incredibly dense atoms layered and spread over the mag shields field. When two of these fields meet they will collide at these incredible speeds in dilated time. This on a by atom basis does little to large vehicles, but when done a trillion times releases enough energy to be compared to a nuclear bomb as matter is annihilated into energy. The result is colliding shields if not held together strongly enough by their field generators cause fission and fusion. This results in many carriers of mag shields to be destroyed, except for some very strategically minded people with grade 3 shields.
Recharging: All shields no matter how powerful or monolithic require a certain amount of upkeep when sustaining fire. In most cases just staying out of fire will return the field to its full strength, but each has its limits. For example, the smaller the vehicle the less “durability” it has. Each coating of material costs weight and many opt for less layers and more maneuverability. details about this can be found in the rules section.
Modifications: There are plenty of ways to personalize mag shields in terms of performance, but generally the look is bound to what type they are. more options for mag shields can be found in the rules section.