Comparison of Reading Standard R-S 1921 and Reading Standard R-S 1920 [S]ave
| Attribute |  Reading Standard R-S 1921 × |  Reading Standard R-S 1920 × |
|---|---|---|
| General | ||
| Production from (year) | 1921 | 1920 |
| Make | Reading Standard | Reading Standard |
| Model | Reading Standard R-S | Reading Standard R-S |
| Category | Allround | Allround |
| Engine and transmission | ||
| Engine type | V2, four-stroke | V2, four-stroke |
| Fuel system | Carburettor. Schebler | Carburettor. Schebler |
| Displacement (cm³) | 999.7 | 999.7 |
| Fuel control | Sidevalves | Sidevalves |
| Clutch | Single speed | Single speed |
| Chassis | ||
| Front suspension | Leading link | Leading link |
| Rear suspension | Rigid | Rigid |
| Seat | - | Solo seat with springs |
| Dimensions | ||
| Dry weight (kg) | 159 | 159 |
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