Triumph announced the ultimate expression of Barrra turner's 650cc pre unit twin in september 1961 ready for the 1961 season. named the
bonneville in recognition of
triumph's record breaking success at the salt flats of the same name, the new machine replaced the tiger 110 at the head of the sporting triumph range.
| TECHNICAL SPECIFICATION |
|---|
| Model ID |
|---|
| Manufacturer (Make) | Triumph |
| Model Name | Bonneville T1 20 |
| Year | 1961 |
| Category(class) | Classic |
| Engine |
|---|
| Engine Capacity (Displacement) | 744 ccm (45.4 cubic inches) |
| Engine Type | Twin |
| Bore x Stroke | Ø76.0 mm x 82.0 mm (Ø2.99 inches x 3.23 inches) |
| Bore/Stroke Ratio | 0.93 |
| Stroke | 4 |
| Valves per Cylinder | 2 |
| Timing System | OHV |
| Cooling System | Air |
| Powertrain |
|---|
| Gearbox | 5 speed |
| Chassis/Suspension/Brakes |
|---|
| Front Brakes | Dual disc |
| Rear Brakes | Single disc |
| Front Tire | 100/90-19 |
| Rear Tire | 110/90-18 |
| Dimensions |
|---|
| Curb Weight | 192 kg (423 lb) |
| Fuel Capacity | 18 litres (4.76 gallons) |
| Performance |
|---|
| Max Power | 49.00 HP (35.8 kW) at 6500 RPM |
| Power/Weight Ratio | 0.26 Hp/Kg |
| Top Speed | 161 km/h (100mph) |
| Acceleration (dart, speedup) time |
|
| 0-100 km/h | 5.5 seconds |
| 0-60 mph | 5.2 seconds |
| 1/4 mile | - |
| 60 to 140 km/h, highest gear | - |
