Technical Specifications


  • The name "ATOM" registered with the Society of Motor Manufacturers and Traders
  • Chassis
    • Rectangular tube, 2.0 x 1.25 inches 13 guage and 1.25 x 1.25 inches of 18 guage with aluminium overclad panels.
    • Fully patented box frame structure.
    • Self tapping screws and nyloc nuts used for the first time on Astons.
    • All the body panels are original.
  • Suspension
    • I.F.S. with short trailing links and coil springs. Gordon Armstrong patented.
    • Divided track rods providing accurate steering geometry.
    • Semi-elliptical springs to rear.
    • Gordon Armstrong hydraulic level shock-absorbers to front and rear.
    • 5.50 x 17 inch tyres.
  • Transmission
    • Electromagnetic 4 speed "COTAL" semi-automatic gearbox.
    • Salisbury hypoid bevel back axle.
    • Top Ratio 4.55:1, Third 6.68:1, Second 10:1, First 15:1.
  • Braking
    • Lockheed hydraulic on 12 inch drums.
  • Engine
    • (From 1944) 1970cc Claude Hill Pushrod 4 cylinder 82.55mm bore x 92mm stroke.
      • Twin 1.50in S.U. Carburettors with thermo-choke.
      • Inlet valves centred above pistons, exhaust valves angled in recesses to manifold. Direct drive water pump.
      • Wet sump 1.50 gals. capacity.
      • Coil ignition.
    • (1940-44) 1950cc Single O.H.C, 78mm bore x 102 stroke, Zenith Carburettors


Additional Data


Wheelbase: 8ft 6ins
Track: 4ft 2ins
Steering: 2.25 turns lock to lock
Weight: 24cwt (2,688 lbs)
Petrol Tank: 17 gallons