Several armored combat vehicles i made for for L4oftheWest 's Mass Effect and Starship Troopers crossover fanfic on fanfiction.net and this site here:
www.alternatehistory.com/forum…
M27 Centurion II Universal Combat Tank
An antiquated Federation Main Battle Tank, the type was no longer in service in the mainstay Federatal Army during the Second Bug War,although they are still being manufactured for colonial garrisons which lacked access to high-end equipments and maintenance facilities.
The Centurion design was based on the principle of hit-and-run defensive tactics back during the Disorder Wars period on Earth. Designed to be mobile and small, with greater flexibility compared to its successors, its small chassis means it can move up relatively narrow mountain roads, and more can be fit upon trains and transportation. With the Federation rethinking their mindset on the more defensive doctrines for their armored units, these defense minded vehicles outstayed their welcome. This proved to be a liability for these vintage tanks, when the Federation launched their retaliation campaigns against the Arachnids and the Batarians. But despite its age they maintained excellent defensive capabilities, as everything from Skinnie Chariots to Batarian Varush tanks learned to fear its assault gun variant, the Dustbin.
Already when the 2nd Bug War came to an end, these vehicles showed their age, and it was only made worse with the discovery of the Mass Effect technology. Originally just an old variant for a style of warfare made impossible by the Bugs and Skinnies, it was quickly rendered obsolete by advancing technology from the Citadel League. The most obvious disadvantages was the lack of a kinetic shield, along with inferior metallurgical protection against hi-velocity Mass Accelerators, these quickly proved to be fatal for the unfortunate crew of these tanks which faced raids from the Terminus and Batarians. Nevertheless, they are still being mass produced and constantly upgraded with up-to-date equipment. Examples of these upgrades include ablative laser proof coatings, improved thermal sensors, state of the art armor plating, and improved engines.
The tank has a reputation for being cheap, fast, and reliable. Able to run on anything that burns, can reach up to 88km/h in favorable off road terrain, being relatively easy to maintain, and can mount a variety of weapon systems. It maintains the Federation’s desire for modularity, with the various turrets able to be replaced, and casement weapon’s also able to be swapped out. Typically used for garrisons in defensive actions, the tank has a reputation for being the Colonist’s vehicle of choice, with it pulling double duty in farming, mining, forestry, and many more industries, with the Colony of Neo Novogorsk claiming it as their Planet Vehicle.
Specification (M29 Mark IV Main Battle Tank)
Height:3.56 m
Length:7.4 m
Width:3.53 m
Weight: 36 tons
Ground Clearance: 0.5m
Armor:
-240mm front
-120mm sides
-300mm turret (actual turret protection with ablative coating and ERA is 1200mm)
-70mm rear
Speed:88km/h
Powerplant: 2x Morita Liberty turbodiesel Engines
Shielding:
-Composite armor (baseline tank hull and turret)
-NBC protection system
-EMP immune vacuum tubes
-Explosive Reactive Armor plates
Armaments:
-1x140 mm MW-97B Thunderstrike hi-velocity rifled cannon (with access to HEAT FS, HESH and APDS munitions)
-2 x Morita 12.7mm HMG (coaxial and optional anti-air)
Crew: 3 (Driver, Gunner, Commander)
Suspension: Torsion bar
M40 Susanoo Transitional Combat Tank
The M40 Susanoo is one of the most modern Main Battle Tanks operated by the Terran Federation. Due to being costly technological prototype units to served as "transitional combat vehicle design" to gain experiences with new mass effect-based technologies, only a small quantities of them were produced before the Federation opted to choose the M42 Pluton as the mainstay MBTs for the Army instead.
A combined effort of Turian engineering with Terran simplified doctrines, the M-40 Main Battle Tank was the answer to a modular and effective armored combat vehicle, which can fulfill many specialized roles on the battlefield
Amongst its technological upgrades is the unique Magnetic Levitation Drive system. This new propulsion system utilizes an enclosed loop movement, driving a continuous caterpillar track. Because of the required space to install a cooling system and fuel cells as well as the Eezo core, the tank tracks has to be raised and redesigned in a rhomboid shape with a higher profile than the previous Centurion MBT, giving it a retro-appearance similar to the tanks during the Great War, or the First World War, of the pre-Federation era.
Its deceptive looks can be a valuable distraction in a heated battle, when an exposed track is shot off from its chained link, the track will continue to be linked together thanks to the looping movement of the Mag-Lev drive, and even if all track links were destroyed, the tank can still move on its own road wheels, although at a much slower speed. The only way to disable the tank completely is to destroy its Mag-Lev Drives, which are heavily armored and enclosed on each track. In addition to the innovative Mag-Lev Drive, this tank is also the first Federation armored combat vehicle designed to incorporate a kinetic barrier generator, which greatly enhances its protection in combat compared to previous Federal designs, giving the crew a higher chance of survival on the battlefield and increasing its defense.
Due to the high production cost, the Susanoo have a lower procurement rate compared to the older Centurion. 5 Centurion MBTs can be produced for every Susanoo being made. After the first Batarian War, the Terran Federation Army was reported to have a total of 225 of these vehicles in service, while the System Alliance was in possession of 81 exported tanks (33 standard MBT variant and 38 anti-aircraft tanks).
Specification (M40A1 Main Battle Tank)
Role: Main Battle Tank
Operators:
-Terran Federation
-Systems Alliance (M41 export variants)
Armaments:
-1 x 125 mm Rosenkov RD-10 Plasma Railgun
-2 x Morita 12.7mm HMG (coaxial mount and in remote-controlled turret)
Armor:
-330mm front
-150mm sides
-300mm turret (actual turret protection with ablative coating and ERA is 1200mm)
-90mm rear
Shielding:
-Kinetic Barrier generator
-Composite armor
(baseline tank hull and turret)
-NBC protection system
-EMP immune vacuum tubes
-Explosive Reactive Armor plates
Height: 3.57m
Length: 8.3m
Width: 3.59m
Speed: 75km/h
Powerplant: 1 xNashan Stellar Dynamics NS-40 multi-fuel gas turbine (1600 hp), 2x Twin Mag-Lev Drives
Crew: 3 (Driver, Gunner, Commander)
Weight: 45 tons
Suspension: Torsion bar