| General information |
|---|
| Model | Ariel 4G Square Four Mark I |
| Year | 1952 |
| Category | Allround |
| Rating | 3.2 Check out the detailed rating of reliability, maintenance costs, value for money, etc. Compare with any other motorcycle. |
| Engine and transmission |
|---|
| Displacement | 995.0 ccm (60.71 cubic inches) |
| Engine type | Square four cylinder |
| Engine details | Double twin cylinder arranged as a square. |
| Power | 35.0 HP (25.5 kW)) @ 5500 RPM |
| Top speed | 144.8 km/h (90.0 mph) |
| Compression | 6.0:1 |
| Bore x stroke | 65.0 x 78.0 mm (2.6 x 3.1 inches) |
| Valves per cylinder | 2 |
| Fuel system | Carburettor. SU MC2 carburettor |
| Fuel control | Overhead Valves (OHV) |
| Lubrication system | Dry sump with dual oil pump. |
| Cooling system | Air |
| Gearbox | 4-speed |
| Transmission type | Chain (final drive) |
| Exhaust system | Dual two-into-one |
| Chassis, suspension, brakes and wheels |
|---|
| Frame type | Tubular single loop |
| Front suspension | Oil damped telescopic fork |
| Rear suspension | Plunger-link spring |
| Front tire | 3.25-19 |
| Rear tire | 4.00-18 |
| Front brakes | Expanding brake (drum brake) |
| Diameter | 203 mm (8.0 inches) |
| Rear brakes | Expanding brake (drum brake) |
| Diameter | 178 mm (7.0 inches) |
| Wheels | Wire spoked. Dunlop tyres. |
| Seat | Solo seat |
| Physical measures and capacities |
|---|
| Dry weight | 197.0 kg (434.3 pounds) |
| Power/weight ratio | 0.1777 HP/kg |
| Overall length | 2083 mm (82.0 inches) |
| Wheelbase | 1422 mm (56.0 inches) |
| Fuel capacity | 16.00 litres (4.23 US gallons) |
| Other specifications |
|---|
| Color options | Red/chrome, Black/chrome |
| Starter | Kick |
| Electrical | 6 Volt battery. |
| Light | 30 Watt headlamp. |
| Comments | Also called ´Squariel´. Designed by Edward Turner. |
| Update specs | Report missing specs or required updates. |
| Further information |
|---|
| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. |
| Ask questions | Join the 52 Ariel 4G Square Four Mark I discussion group or the general Ariel discussion group. |
| Related bikes | List related bikes for comparison of specs. |
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Rating sample for this Ariel bike
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Racing track capabilities for the 1952 Ariel 4G Square Four Mark I:
 (51.1 out of 100)
Click here for complete rating. You can also compare bikes.
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