Design: AS-LFV-1 "Protector" [4, 3-1, 3-1]
This design is quite ambitious, but nothing our Mathemagicians can't handle.
Riffing off our experience with the Restless, the Protector is a large box-shaped vehicle on wagon wheels outfitted with an HC1-E and a HAC-1 that can carry up to 8 soldiers uncomfortably.
Standing at about a man-and-a-half tall, the Protector features a bubbled driver-side compartment on the left-hand-side, where an operator can control the output of the single steam engine that sits directly behind him. This is done through three levers; one that controls whether the right-back wheel is receiving engine power, one that controls whether the left-back wheel is receiving engine power, and one that controls the brakes. Through this innovative method the vehicle can go forward, right, or left (but not backwards). The control devices that dictate power to the wheels and apply the mechanical brake are quite bulky and delicate, so they're encased in crystal with a steel-door hatch for repairs on the bottom of the Protector.
Power is provided through a brand-new innovation known as an "Internal Detonation Engine". Originally a new design of the Steam Engine, the IDE is a new method of transferring power. The original design would heat water to steam, and then put it through one of two chambers. This caused a piston to slide in one direction; once the piston reaches its max extension, the steam exits the chamber and begins filling the sister chamber. This caused a back-and-forth motion that could be used to turn a circular crank. After one apprentice asked why we were even using steam at all, it was upgraded to Detonation powered. This removes the bulky boiler and instead replaces it with a very complicated series of scroll-work that controls timing based on input, stress, and state. Much like the R1 it can generate the combustion through a pair of crystal wires in each chamber, provided a nearby apprentice constantly powers the device. A sizable array of AA magegems takes up a considerable amount of space, but at full charge will allow the device to travel for a minute before running out of power. In the seat next to the driver is an HC1-E on a swivel and rail that pokes out of a small steel hatch in the crystal. The cannon can be aimed and fired, deafening everyone in the vehicle, or pulled back and stowed. Racks provide room for 12 explosive shots, or 16 if the gunner doesn't mind standing hunched-over. The cannon, ammo, engine, gem array and control devices means there's next to no room in the forward compartment, and the only way in or out is a small hatch on the roof.
The rear can store eight soldiers in full gear standing up. The rear door is a steel hatch that drops down into a ramp and is secured by a bolt on the inside. The door is thoughtfully rubbed with tar, to prevent slipping. A hatch in the roof leads to an HAC-1 mounted on the top of the vehicle, although the hatch is so narrow that a soldier can't wear armor. The HAC-1 doesn't have a decent angle to shoot down, so is primarily aimed upwards for carpet riders. Passive nickel circuitry lines the walls and engines, keeping everything at a comfortable temperature that is measured in Celsius, you pedantic pricks.
The wagon wheels the Protector rides on are quite thin compared to the incredible weight of the machine, and it's not uncommon for them to sink deep into the mud or crack when the Protector hits a bump. Even then the ride is quite bumpy without any sort of suspension, so accuracy for the cannon and HAC are virtually non-existent while on the move. The transfer of power from the engine to the wheels uses gears, which are prone to stripping from frequent changing at high speed. Turning often involves stopping, disengaging a wheel, turning, stopping, and re-engaging that wheel. The engine is more powerful than our standard steam engines, but the design is complicated enough that it can't be readily retro-fitted onto our existing ships and trains. The entire device is heavy enough and enough power is lost from the conversion to the wheels that the Protector could probably outrun an unencumbered man on foot, but not a horse.
The Protector relies on two apprentices; one to power the engine, and one to operate the guns (although the engine-operator can pause to climb up to the HAC-1 in a pinch). This device is Very Expensive.