After thinking about it there is a fatal with just 2 lift hoists; mass hauled is equal to the mass on the vehicle, plus cargo mass. So this version is limited to carrying a 50 ton mech, not 70 ton. Unless the 70 ton mech in question was in pieces.
So add 2 more lift hoists to the truck, see below.
This renders the larger mech hauler obsolete. But a 35 ton mech hauler has the 70 ton limit I'm looking for.
Big Boy Mech Hauler M50
Mass: 50 tons
Tech Base: Inner Sphere
Motive Type: Wheeled
Rules Level: Advanced Rules
Era: Age of War/Star League
Tech Rating/Era Availability: D/C-C-B-A
Production Year: 0
Cost: 581,250 C-Bills
Battle Value: 141
Power Plant: 180 I.C.E.
Cruise Speed: 43.2 km/h
Flanking Speed: 64.8 km/h
Armor: Standard Armor
Armament:
None
Manufacturer:
Primary Factory:
Communications System:
Targeting and Tracking System:
================================================================================
Equipment Type Rating Mass
--------------------------------------------------------------------------------
Internal Structure: Standard 25 points 5.00
Engine: I.C.E. Engine 180 14.00
Cruise MP: 4
Flank MP: 6
Heat Sinks: Single Heat Sink 0 0.00
Control Equipment: 2.50
Lift Equipment: 0.00
Turret: 0.00
Armor: Standard Armor AV - 32 2.00
Armor
Factor
Front 10
Left/Right 8/8
Turret 0
Rear 6
================================================================================
Equipment Location Heat Spaces Mass
--------------------------------------------------------------------------------
4 (R) Lift Hoists RR 0 4 12.00
Infantry Compartment (0.5 tons) BD 0 1 0.50
Cargo, Standard (14.0 tons) BD 0 1 14.00
BattleForce Statistics
MV S (+0) M (+2) L (+4) E (+6) Wt. Ov Armor: 1 Points: 1
4w 0 0 0 0 2 0 Structure: 3
Special Abilities: ENE, EE, TUR()