

(1955 model)
| Marque (make) | Fairthorpe | Issued from | 1955 |
|---|---|---|---|
| Model | Atom Mark I | Issued until | |
| Serie | Atom | Number made | |
| Model family | Body construction | ||
| Model code | Body designation | ||
| Manufacturer | Fairthorpe | Country | UK |
| Base platform | Number of doors | 2 | |
|---|---|---|---|
| Bodywork type | fixed-head coupé | Number of seats | 2 |
| Bodywork designer | Cargo capacity (volume) | ||
| Max. cargo capacity (volume) |
| Length | 3658 mm / 144.0 in / 144.0 in | Ground clearance | 191 mm / 7.5 in / 7.5 in |
|---|---|---|---|
| Width | 1524 mm / 60.0 in / 60.0 in | Length/wheelbase ratio | 1.62 |
| Height | 1372 mm / 54.0 in / 54.0 in | Total (curb) weight | 426 kg / 939 lb / 939 lb |
| Wheelbase | 2261 mm / 89.0 in / 89.0 in | Dry weight | |
| Track front | 1143 mm / 45.0 in / 45.0 in | Weight distribution (front) | |
| Track rear | 1219 mm / 48.0 in / 48.0 in | Fuel capacity | 18 l / 4.0 UK gal / 4.8 US gal |
| Drag coefficient | Frontal Area | ||
|---|---|---|---|
| Cx |
| Engine Code | Total number of cylinders | 1 | |
|---|---|---|---|
| Engine Type | single cylinder | Total number of valves | 2 |
| Engine Manufacturer | Valves per cylinder | 2 | |
| Engine construction | Bore | 63.0 mm / 2.48 in / 2.48 in | |
| Fuel | petrol (gasoline) | Stroke | 80.0 mm / 3.15 in / 3.15 in |
| Fuel supply | Bore/Stroke ratio | 0.79 | |
| Engine Main bearings | Engine displacement | 248 cm3 / 15.1 cu in / 15.1 cu in | |
| Cam Design | OHV (overhead valve, I-head) | Unitary capacity | 248.00 cm3/cylinder / 15.134 cu in/cylinder / 15.134 cu in/cylinder |
| Sump | Compression ratio | 6.5 : 1 | |
| Aspiration | natural | Max. output power | 8.9 kW / 12.1 hp / 12.1 hp at 5300 rpm / 5300 rpm / 5300 rpm |
| Compressor type | N/A | Max. torque | 19.0 Nm / 14.0 lbft / 14.0 lbft at 3700 rpm / 3700 rpm / 3700 rpm |
| Intercooler | none | Maximum rpm | |
| Coolant | air | Max. net output | 8.8 kW / 12.0 bhp / 12.0 bhp |
| Catalytic converter | no | Specific output | 48.4 kW/l / 1.078 bhp/cu in / 1.078 bhp/cu in |
| Specific torque | 76.61 Nm/l / 0.670 lbft/cu in / 0.670 lbft/cu in |
| Transmission type | manual | Number of gears | 3 |
|---|---|---|---|
| Wheel drive | rear wheel drive | Top gear (drive) ratio | 1.00 |
| Final gear (drive) ratio | 7.98 |
| Acceleration 0-50 mph (80 km/h) | Top (maximal) speed | ||
|---|---|---|---|
| Acceleration 0-60 mph (96 km/h) | Power-to-weight ratio | 28.17 kW/ton / 38.30 bhp/ton / 38.30 bhp/ton | |
| Acceleration 0-100 km/h | Fuel consumption, City (urban) | ||
| Acceleration 0-100 mph (160 km/h) | Fuel consumption, Road (extra-urban) | ||
| Acceleration 80-120 km/h (50-70 mph) in top | Fuel consumption, Mixed (combined) | ||
| 0-Quarter-mile time | Fuel consumption, Euro | ||
| 0-Kilometer time | CO2 emissions |
| Engine location | rear | Engine alignment | |
|---|---|---|---|
| Steering | |||
| Turns lock-to-lock | Turning circle | ||
| Suspension front | I.CS. | Suspension rear | I.CS. |
| Wheels front | Wheels rear | ||
| Tyres front | Tyres rear | ||
| Brakes front | drum | Brakes rear | drum |
| Brake diameter front | Brake diameter rear | ||
| Braked area |
Technical specifications and performance data of Fairthorpe Atom Mark I