It seems that 34tons is the optimum tonnage for a faster version of the ubiquitous Scorpion, but cheaper than a Vedette.
Scorpion II (STD)
Mass: 34 tons
Movement Type: Tracked
Power Plant: 170 ICE
Cruising Speed: 54 kph
Maximum Speed: 86.4 kph
Armor: Standard
Armament:
1 Machine Gun
1 AC/5
Cost: 464,087 C-bills
Technology Base: Inner Sphere (Introductory)
Battle Value: 432
Overview
Scorpion II is a crossover between the original Scorpion Light Tank and the Vedette Medium Tank, using the same turret and armament of the first in a slightly larger hull and engine. The speed and mobility is similar to the Vedette with similar armor protection. With 34tons is is much lighter than the Vedette and only 9tons heavier and slightly more expensive than the Scorpion.
Equipment Mass
Internal Structure 3.5
Engine 170 ICE 12
Cruising MP: 5
Flank MP: 8
Heat Sinks: 0 0
Control Equipment: 2.0
Power Amplifier: 0.0
Turret: 1.0
Armor Factor 88 5.5
Internal Armor
Structure Value
Front 4 24
R/L Side 4/4 16/16
Rear 4 16
Turret 4 16
Weapons
and Ammo Location Tonnage
Machine Gun Turret 0.5
AC/5 Turret 8.0
Half Machine Gun Ammo (100) Body 0.5
AC/5 Ammo (20) Body 1.0