Comparison of Aermacchi Chimera 250 1965 and Yamaha YDS 3 1965 [S]ave
| Attribute |  Yamaha YDS 3 1965 × |  Aermacchi Chimera 250 1965 × |
|---|---|---|
| General | ||
| Production from (year) | 1965 | 1965 |
| Make | Yamaha | Aermacchi |
| Model | Yamaha YDS 3 | Aermacchi Chimera 250 |
| Category | Sport | Sport |
| Engine and transmission | ||
| Engine type | Twin, two-stroke | Single cylinder, four-stroke |
| Fuel system | - | Carburettor |
| Displacement (cm³) | 246 | 246 |
| Power (kw) | 17.5 | 10 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 50 | 66 |
| Stroke (mm) | 56 | 72 |
| Clutch | Wet multiplate | - |
| Compression | 7.5:1 | 7.0:1 |
| Chassis | ||
| Front suspension | Telescopic-Hydraulic damping | - |
| Rear suspension | Swingarm-two shocks | - |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Front tyre | 3-18 | 2.50-17 |
| Rear tyre | 3-18 | 2.50-17 |
| Seat | Dual | Dual |
| Wheels | - | Spoked |
| Other | ||
| Starter | Kick | Kick |
| Dimensions | ||
| Wheelbase (mm) | 1,318 | 1,360 |
| Dry weight (kg) | 156 | 125 |
| Power/weight ratio | 0.1122 | 0.08 |
| Performance | ||
| Top speed (km/h) | 132 | 120 |
| Fuel capacity (l) | 11.36 | - |
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