| Attribute | Zündapp EM 250 1926 × | Indian Model O 1917 × |
|---|---|---|
| General | ||
| Production from (year) | 1926 | 1917 |
| Make | Zündapp | Indian |
| Model | Zündapp EM 250 | Indian Model O |
| Category | Sport | Allround |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Twin, four-stroke |
| Fuel system | Carburettor | - |
| Displacement (cm³) | 249 | 257 |
| Power (kw) | 3.3 | - |
| Cooling system | Air | - |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 62 | 63.5 |
| Stroke (mm) | 82.5 | 63.5 |
| Gearbox | 3-speed | - |
| Fuel control | - | Sidevalves |
| Clutch | - | Three speed |
| Chassis | ||
| Front suspension | Webb fork | Trailing link fork |
| Rear suspension | Rigid | Rigid |
| Front brakes | Expanding brake (drum brake) | - |
| Rear brakes | Expanding brake (drum brake) | - |
| Front tyre | 2.85-26 | - |
| Rear tyre | 2.85-26 | - |
| Seat | Single | Solo seat with springs |
| Wheels | Spoked | - |
| Other | ||
| Starter | Kick | - |
| Performance | ||
| Top speed (km/h) | 80 | 57 |