Mercedes-Benz T 80 record car, 1939

Mercedes-Benz T 80 record car, 1939
  • Engine type
    DB 603 RS special aircraft engine
  • Inlet valves
    2 overhead valves per cylinder, actuated via finger followers
  • Ignition sequence
    1-11-2-9-4-7-6-8-5-10-3-12
  • No. of cylinders / arrangement
    12 / 60° V
  • Outlet valves
    2 overhead valves per cylinder, actuated via finger followers
  • Configuration
    In front of rear axles, longitudinal; inverted cylinders
  • Valve operation
    1 overhead camshaft per cylinder bank
  • Ignition adjustment
    Automatically
  • Combustion principle
    Four-stroke Otto (with direct injection, supercharger and charge-air cooling)
  • Crankshaft
    7-bearing
  • Bore x Stroke
    162 x 180 mm
  • Fuel system
    Direct injection, Bosch 12-plunger injection pump PZ 12 HP
  • Total displacement
    44500 cc
  • Spark plugs
    2 per cylinder, Bosch DW 250 ET 7/1 D
  • Fuel supply
    Gear-wheel double pump with pneumatic governor
  • Compression ratio
    7.5
  • Fuel tank capacity
    80 l
  • Maximum / output / rated output
    3500 hp at 3460/min
  • Cooling
    Glycol circulation cooling via rotary pump
  • Lubrication
    Dry-sump lubrication, 1 pressure pump
  • Cylinders
    1 silumin block per cylinder bank with steel liners
  • Cylinder head
    Silumin, cast in one piece together with cylinders
  • Starter
    Bosch AL-SGC 24 DR 2 inertia starter
  • Battery
    Fitted
  • Ignition
    High-voltage magneto ignition
  • Ignition system
    Bosch twin magneto with trembler-coil starter ignition
  • Hand brake
    Not fitted
  • Foot brake
    Acting on all 6 wheels
  • Steering
    Worm-and-nut steering, system Porsche with divided steering linkage
  • Wheels
    Wire-spoke wheels, center mounting
  • Front tires
    7.00 x 32 Continental Special
  • Frame design
    Double-tube frame
  • Rear tires
    7.00 x 32 Continental Special
  • Front wheel suspension
    Double trailing arm, torsion bar springs, friction shock absorbers
  • Drivetrain
    By spur gears to differentials and rear wheels
  • Rear wheel suspension
    Swing axles with torsion-bar springs, friction shock absorbers
  • Brake system
    Hydraulically actuated, including brake compensating device
  • Front brakes
    Inside shoe brakes with finned light-alloy drums, 500 mm diameter
  • Rear brakes
    Inside shoe brakes with finned light-alloy drums, 500 mm diameter
  • Transmission
    Not fitted
  • Clutch
    Dry triple-disc clutch with automatic flyweight governor
  • Gear ratios
    Transmission via spur gear 58:34
  • Final drive ratio
    Bevel-gear drive 25:12
  • Maximum speed
    650 km/h
  • Wheelbase
    3550 mm
  • Front track
    1320 mm
  • Rear track
    1180 mm
  • Length
    8240 mm
  • Width
    3200 mm
  • Height
    1270 mm
  • Vehicle weight
    2800 kg
  • Comments
    Planned fuel quality: Fuel: 50 % XM + 50 % WW Calorific value 5,930 kcal/kg XM - 40 % methyl alcohol 32 % benzene 24 % ethyl alcohol 4 % petroleum ether light Density: 0.813 Calorific value: 6,900 kcal/kg - 5,600 kcal/l WW - 86.0 % methyl alcohol 8.8 % acetone 4.4 % nitrobenzene 0.8 % ether Density: 0.816 Calorific value: 4,960 kcal/kg - 4,050 kcal/l Special equipment: The whole body could be taken off the double-tube frame for maintenance work, e.g. for changing tires or for working on the engine-transmission unit. The body is connected to the chassis with 8 quick mountings. The designers provided for centrally-operated pneumatic jacks in four different places.
  • Engine weight
    807 kg
  • Seats
    1
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