Now that that's the first parts over, I'm going to present my Spartan. The idea is that the Ancients used the Land Raider almost solely as part of exploration efforts, with this larger and more combat capable design fulfilling the roll of a heavy IFV for their elite forces. For an actual battle tank, they had the Baneblade patterns.
As a side note, if any of these tech write ups seem to be too slow, feel free to increase them proportionally. I'm basing these things on Forge World material, and we all know about Brittan's traditionally poor understanding of industry and engineering. (If you don't get the last part, feel free to google it. British Leyland was merely the cap stone of their institutional problems.)
Helheim pattern Spartan
The Helheim and Anvilus patterns of Spartan Assault Tank are only somewhat closely related designs. The impetus for their creation came from the same set of tactical necessities, and both draw from the same knowledge base, resulting in similar vehicles. Like the Anvilus pattern, the Helheim pattern was developed from the Land Raider Proteus. The difference is that the Helheim pattern is a proper STC creation, resulting in a substantially more refined and effective design. The internal framework is 20% smaller while being 10% stronger, and reactor is nearly 50% more powerful. The armoring scheme is 5-7% more effective against beam weapons. As a Helheim pattern vehicle, the track system uses 60% less internal volume, enabling radical repositioning of the vehicle's internal components.
In terms of hull shape, the Helheim Spartan follows many of the conventions set forth by its peers. The upper portions of the tracks have be lowered to be inline with the main hull, and the cupola ring has been removed. The front mounted weapons have been moved .5m down the assault hatch. The overall length has been shortened by a full meter, with the height being reduced by a somewhat less impressive .7 meters. These changes make up the majority of the weight reduction. The side doors have been removed as being of limited use, an enabled a substantial revision of the sponson mounts.
Visually, the most obvious difference is the sponsons. Instead of the hanging Lascannon arrangement of the Anvilus pattern, the Helheim pattern has low profile ball turrets armed with Dual Heavy Neutron Cannons. Thanks to a sophisticated set of beam diverters, the entire weapon is concealed within the turret ball. The emission points are a set at a 90 degree angle on an outer portion of the ball, with the magnetically moved mounting providing a full 180 degrees of elevation. The increased power consumption of the Neutron mounts is readily counteracted by the increased power generation, which manages to achieve a net reduction in required capacitors.
The transport capacity remains a full 25 power armored soldiers. While there is slightly less head room, this is only noticed by those in Shock Trooper or Destroyer pattern armor, whose immense size proves to be problematic no matter the vehicle. The assault ramp has gained several sets of fragmentation launchers, providing protection for troops charging directly into close combat. Overall protection is further enhanced by the inclusion of a Ion Shield.
Spartan
Planet of Origin: Avernus (Helheim)
Known Patterns: I-IV
Crew: Commander, Driver
Powerplant: Open-core Plasma ioniser
Weight: 150 tons
Length: 9m
Width: 5.2m, with sponsons
Height: 4.4m
Ground Clearance: .5m
Max Speed -Road: 60 kph
Max Speed -Off Road: 45 kph
Main Armament: Sponson Dual Heavy Neutron Cannons
Traverse: 180
Elevation: 360
Secondary Armament: Heavy Neutron Repeater
Armor
Superstructure: 95mm
Hull: 95mm