Greetings all, I've been pulled on as a judge for this one, so none of the following should be construed as competition so much as... encouragement.
This is the Mogcat:
It's designed to exactly nail the minimum specs, while being relatively easy to produce and long-legged. It sports a 3"/76mm main gun, a bunch of machineguns and the sort of conveniences you'd expect from a late-40s design (gunner's panoramic sight, wet ammo racks, internal firefighting equipment and smoke launchers). It's otherwise very bare-bones, and comes in at all of 10.3st/9.3mt.
I'll add further specs as this goes along, but for the moment all you have to know is that this is the minimum, lowest bar that I can think of. This thing is intended to be the product of unimaginative minds working at what passes for the ordinance department in the Lone Free State - men who spent their lives designing incremental improvements on machineguns and recoilless guns, and think that their lightweight 3" gun is a world-beating novelty.
For what it's worth; what I would like to see is something that grabs the requirements by the balls and works out a way to wring something that can beat @N-L-M's Norman design in a reasonably fair fight out of the thin gruel that the Provisional Government has put out. Remember that the Texans don't know what they don't know - their official line is that the arrival of Deseret light tanks is some sort of shocking revelation. But they aren't stupid - the smarter engineers will already be looking at what they could do with their given automotive and gun tech, and what was achieved in the pre-war era, and are probably staying up late at night worrying about their conclusions.
I had a think last night, and decided to swap out the turret crew to a commander-loader and gunner configuration instead of the T-34-esque commander-gunner and loader configuration (now included with the rest of the pictures).
Here's a bonus picture of the vehicle in travel configuration - turret rearward and gun in cradle:
Here's some more stats on the vehicle, in the prescribed units...
The Mogcat is a 6x6 armoured scout car designed for mobility and extended operations. The design boasts an innovative engine, drivetrain, suspension package and gun, all built with an eye to ruggedness and light weight. The Mogcat's 3-inch cannon is able to provide useful anti-armour (APHE and HEAT-FS) and anti-infantry (HE, canister and shrapnel shell) firepower, while the plethora of machineguns it sports allows it to tackle dismounted infantry and light vehicles with confidence. The combination of purpose-built drivetrain components, long operational range and firepower makes the Mogcat a strong contender for the present production contract.
Major dimensions and mass
Crew: 3 (driver, commander-loader, gunner)
Length: 16'/9" (hull), 19"/4' (gun forward)
Height: 9'/6"m (top of commander’s cupola)
Unloaded weight: 8.7 ton
Loaded weight: 10.3 ton
Ground pressure: 4900lb/ft2 (unloaded, muddy ground) to 5785lb/ft2 (loaded, muddy ground)
Axle loading: 3.4t/axle loaded
Engine: 4-cylinder turbodiesel, 732cu displacement, 200-280HP
PWR: 19.4HP/t loaded, detuned
Ground clearance: 17.7"
Max road speed: 60mph
Max offroad speed: 20mph
Operational range (on road/offroad): 850mi/500mi
2" LOS on hull front (1" RHA @ 60°)
0.8" LOS on hull sides with 30° angle (0.8" RHA @ 90°, 0.5"mm @ 45°)
0.6" RHA on hull rear
0.5" LOS on hull bottom (0.4" RHA @ 45°)
2" LOS on turret front (1.8" RHA @ 30°)
2" CHA mantlet
0.8" LOS on turret sides with 30° angle (0.6" RHA @ 25°)
0.6" RHA on turret rear
0.4" RHA on roof
0.4" RHA on turret floor
2" RHA turret neck ring and splash guard
0.4" Aluminium turret basket, skeletonised
3.2" smoke dischargers (2 reloads).
Fuel tanks on driver’s sides improve protection against threats from the front.
Ammunition stowage in wet racks in turret bustle, turret floor and driver’s compartment.
Internal fire control system (BCF canisters in engine compartment and fighting compartment, driver has access to removable CO2 extinguisher).
Turret ring diameter: 4'/5"
Main gun: 3" L/40 medium-pressure gun, 12" recoil travel
Ammunition stowage: 50 rounds main gun ammunition stowage
+30/-10 degree elevation.
3"x15.2" cartridge (3.7" base, 19lb max all-up weight)
APHE: 13.9lb, 2425ft/s, 3.5" RHA penetration at 1000m
HEAT-FS: 15.4lb, 2295ft/s, 9.8" penetration
HE: 13.7lb (1.35lb fill), 2460ft/s, 0.4" RHA penetration
APFSDS (spindle-type, 15L/D ratio, maraging steel penetrator): 1.5lb, 5900ft/s, 6.5" RHA penetration at 1000 yards.
.30 cal coaxial MG (600 rnds)
.30 cal gunner's MG (600 rnds)
.50 cal commander’s MG (500 rnds)
Long-range transistor radio.
Vehicle intercom system.
Ancillaries (fire tables, gunner’s quadrant, traverse markings etc) for indirect fire missions.
Commander has access to panoramic sight (x1) and telescopic sight (x4) for target acquisition and lay-on.
Turret traverse is electric (30 degrees per second rotation).
Fume extractor on main gun
Large hatches in hull rear allow easy servicing of engine and gearbox.
Storage lockers in hull rear flanking the engine for personal/supplies stowage.
Hydraulic jacks on the hull bottom between the first and second wheels and at the rear make changing tires easier.
Update 3: I reworked all the images.