1955 - Fairthorpe - Atom Mark III

Technical Specs of This Model
1. Atom Mark III 1955
General Information
Make Fairthorpe
Model Atom Mark III
Production Year 1955
Country
Designer
Production Number
Model Code
Model Family
Chassis and Dimensions
Chassis Type 2S FHC
Number of Doors 2
Wheelbase 2261 mm     (89 in)
Front Track 1143 mm     (45 in)
Rear Track 1219 mm     (48 in)
Length 3658 mm     (144 in)
Width 1524 mm     (60 in)
Height 1372 mm     (54 in)
Ground Clearance 191 mm     (7,5 in)
Length / Wheelbase Ratio 1,62
Weight 431 kg     (949,3 lb)
Weight Distribution (front/rear)
Fuel Capacity 20,5 litre   (4,5 Imp gal ,  5,4 US gal)
Aerodynamics
Drag Coefficient
Frontal Area
Cx
Engine Specifications
Engine Manufacturer BSA
Engine Location Rear
Engine Alignment
Engine Construction
Coolant Type Air
Engine Type OHV
Number of Cylinders and Placement S-2
Valves per Cylinder 2    (Total of 4 Pieces)
Engine Displacement 646 cc     (39,42 cu in)
Bore 70 mm     (2,76 in)
Stroke 84 mm     (3,31 in)
Bore / Stroke Ratio 0,83
Unitary Capacity 323 cc/cylinder    (19,71 cu in/cylinder)
Number of Main Bearings
Compression Ratio 6,5 : 1
Fuel System Type 1 Am carb
Aspiration Type Normal
Compressor Type -
Intercooler Type None
Catalytic Converter No
Maximum Engine Power 35 HP     (26,1 kW)
Maximum Engine Power rpm 5700 d/d
Maximum Engine Torque 49 N.m     (36,2 lb.ft ,  5 kg.m)
Maximum Engine Torque rpm 3750 d/d
Engine Torque at Max. Engine Power rpm 43,7 N.m    (5700 d/d)
Power / Weight Ratio 81,2 HP/ton    (60,6 W/kg)
Power / Engine Displacement Ratio 54,2 HP/litre    (40,4 kW/litre)
CO2 Emissions
Fuel Consumption
Performance
0 - 80 km/h
0 - 60 mph
0 - 100 km/h
0 - 160 km/h
80 - 120 km/h (in top gear)
0 - 400 m Acceleration
0 - 1000 m Acceleration
Top Speed
Gearbox and Transmission
Transmission Type 3M
Top Gear Ratio 1 : 1
Final Drive Ratio 4,9 : 1
Drive Wheels RWD (Rear Wheel Drive)
Handling, Suspension Geometry and Brakes
Steering Type
Steering Turns (lock to lock)
Turning Circle Diameter
Suspension (front) I.CS.
Suspension (rear) I.CS.
Brakes (front/rear) Dr/Dr
Brake Disc Diameter (front)
Brake Disc Diameter (rear)
Wheels (front)
Wheels (rear)
Tyres (front)
Tyres (rear)