Vespa 150 GS (1955-61) vs Triumph Bonneville (2009)
Comparison technical specifications
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| Make: | Vespa | Triumph |
| Model: | 150 GS | Bonneville |
| Years: | 1955-61 | 2009 |
| Engine: | Two stroke, single cylinder | Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder |
| Capacity: | 145.5 cc / 8.8 cub in | 865 cc / 52.8 cu in |
| Bore x Stroke: | 57 x 57 mm | 90 x 68 mm |
| Ignition: | 6 pole flywheel magneto | Digital |
| Clutch: | Wet, multiplate with cork inserts | Wet, multi plate |
| Max Power: | 6.0 kW / 8.2 hp @ 7500 rpm | 49 kW / 66 hp @ 7250 rpm |
| Transmission: | 4 Speed, grip-shift, constant mesh | 5 Speed |
| Final Drive: | Direct drive | Chain, X-ring |
| Frame: | Pressed sheet steel, streamlined monocoque structure | Tubular steel cradle, swing arm: twin-sided, tubular steel |
| Front Suspension: | Stub axle with swining hub and variable rate coil spring and double action hydraulic damper | 41mm Kayaba telescopic forks |
| Rear Suspension: | Swinging bracket for engine and wheel, with variable rate coil spring and co-axial double action hydraulic damper | Kayaba chrome spring twin shocks with adjustable preload |
| Front Brakes: | Drum, expanding type with cooling ribs | Single 310 mm disc, 2 piston calipers |
| Rear Brakes: | Drum, expanding type with cooling ribs | Single 255 mm disc, 2 piston calipers |
| Front Tyre: | 3.5 x 10" | 100/90 19 |
| Rear Tyre: | 3.5 x 10" | 130/80 17 |
| Dimensions: | Length: 1700 mm / 67 in Width: 700 mm / 27 in Height: 1050 mm / 41 in | Length 2230 mm / 87.8 in Width 840 mm / 33.1 in Height 1100 mm / 43.3 in |
| Wheelbase: | 1180 mm / 46.4 in | 1500 mm / 59.1 in |
| Dry Weight: | 100 kg / 220 lbs | 205 kg / 451 lbs |
| Fuel Capacity: | 12 L / 3.17 US gal | 16.6 Litres / 4.4 US gal / 3.7 Imp gal |