Comparison of Harley-Davidson Model C 1931 and Norton Mercury 650 1968 [S]ave
| Attribute |  Harley-Davidson Model C 1931 × |  Norton Mercury 650 1968 × |
|---|---|---|
| General | ||
| Production from (year) | 1931 | 1968 |
| Make | Harley-Davidson | Norton |
| Model | Harley-Davidson Model C | Norton Mercury 650 |
| Category | Allround | Allround |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Twin, two-stroke |
| Fuel system | - | Carburettor |
| Displacement (cm³) | 742.6 | 646 |
| Cooling system | - | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 69.9 | 68 |
| Stroke (mm) | 96.9 | 89 |
| Ignition | - | Coil |
| Compression | - | 9.0:1 |
| Chassis | ||
| Front suspension | - | Telescopic |
| Rear suspension | - | Swingarm |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Front tyre | 3-26 | - |
| Rear tyre | 3-26 | - |
| Seat | Single spring-mounted | Dual |
| Wheels | Spoked | Spoked |
| Other | ||
| Starter | - | Kick |
| Dimensions | ||
| Dry weight (kg) | 167 | 185 |
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