Comparison of Simplex Automatic 1946 and UM Magnetic 125 [S]ave
| Attribute |  UM Magnetic 125 × |  Simplex Automatic 1946 × |
|---|---|---|
| General | ||
| Production from (year) | 2006 | 1946 |
| Make | UM | Simplex |
| Model | UM Magnetic 125 | Simplex Automatic |
| Category | Sport | Allround |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, two-stroke |
| Fuel system | - | Carburettor. Tillottson |
| Displacement (cm³) | 125 | 130 |
| Power (kw) | - | 2.9 |
| Cooling system | Air | - |
| Transmission type,final drive | - | Belt |
| Bore (mm) | 56 | 50.8 |
| Stroke (mm) | 49.5 | 64.3 |
| Gearbox | 5-speed | - |
| Fuel control | - | Overhead Valves (OHV) |
| Ignition | - | Magneto and dual spark plugs |
| Clutch | Manual | - |
| Compression | 9.0:1 | 6.5:1 |
| Chassis | ||
| Front suspension | - | Short rocker arms and two coil springs |
| Rear suspension | - | Rigid |
| Front brakes | Single disc | - |
| Rear brakes | Expanding brake (drum brake) | - |
| Frame type | - | Duplex loop |
| Front tyre | - | 2.50-26 |
| Rear tyre | - | 2.50-26 |
| Seat | - | Solo seat with springs |
| Other | ||
| Starter | Electric & kick | - |
| Dimensions | ||
| Wheelbase (mm) | 1,300 | 1,194 |
| Dry weight (kg) | 110 | 61 |
| Power/weight ratio | - | 0.0474 |
| Performance | ||
| Fuel capacity (l) | 10.21 | 9.46 |
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