Yamaha YD-2 (1958-60) vs Yamaha XS 1100G (1980)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | YD-2 | XS 1100G |
| Years: | 1958-60 | 1980 |
| Engine: | Two stroke, piston-port, parallel twin | Four stroke transverse four cylinder, DOHC, 2 valves per cylinder. |
| Capacity: | 247 cc / 15.0 cu-in | 1101 cc / 67.2 cu-in |
| Bore x Stroke: | 54 x 54 mm | 71.5 x 68.6 mm |
| Cooling System: | Air-cooled | Air cooled |
| Compression Ratio: | 9.2:1 | |
| Induction: | Single carburetor | 4x Mikuni BS 34SS Carburettor |
| Starting: | Kick | Electric |
| Max Power: | 14.5 hp @ 6000 rpm | 95 hp / 70.8 kW @ 8500 rpm |
| Max Torque: | 4.1 kg-m @ 5000 rpm | 9.2 kgf-m / 66.5 lb-ft @ 6500 rpm |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | Chain | Shaft |
| Front Suspension: | Telescopic forks | Telescopic fork. |
| Rear Suspension: | Swing arm | Dual shocks Swing arm, preload adjustable |
| Front Brakes: | Drum | 2x 298mm discs |
| Rear Brakes: | Drum | Single 298mm disc |
| Front Tyre: | 2.50 -16 | 3.50-19 |
| Rear Tyre: | 2.50 -16 | 4.50-17 |
| Wet Weight: | 138 kg / 309 lbs | 258kg / 568.7 lbs |
| Fuel Capacity: | 22 Litres / 5.8 gal |