| BMW R 50 S | ARCH MOTORCYCLE 1S |
|---|
| engine specs | |
| Type | |
|---|---|
| air-cooled, four-stroke, boxer twin cylinder, 2 valves per cylinder | S&S Cycle T124 45-degree downdraft fuel-injected V-Twin engine |
| Displacement | |
| 494 cm3 | 2032 cm3 |
| Bore X Stroke | |
| 2.7x2.7 in OR 69 mm | - |
| Compression Ratio | |
| 6.8:1 | - |
| Horsepower | |
| 35/7650 KW(hp)/RPM | - |
| Torque | |
| - | 115.3/- lb-ft/RPM OR 156/- Nm/RPM |
| Fuel System | |
| 2xBing carburetors | EFI |
| transmission specs | |
| Gearbox | |
|---|---|
| 4-speed, manual | 6-speed |
| Clutch | |
| dry, single plate | Compact dry clutch |
| Final Drive | |
| shaft | Chain |
| chassis specs | |
| Frame | |
|---|---|
| steel | Tubular steel frame with CNC-machined aluminum subframe single-sided swingarm |
| Front Suspension | |
| telescopic fork | Fully adjustable ARCH/Öhlins FGRT series fork |
| Rear Suspension | |
| long swing arm with suspension units and oil pressure shock absorbers | Fully adjustable ARCH/Öhlins rear shock with reservoir and hydraulic pre-load adjustment |
| Front Brake | |
| 200mm drum | Dual ISR 6-piston monobloc radial mount calipers with ISR floating dampened discs |
| Rear Brake | |
| 200mm drum | Single ISR 4-piston monobloc radial mount caliper with ISR semi-floating disc |
| dimension specs | |
| Seat Height | |
|---|---|
| - | 31.5 in OR 800 mm |
| Weight | |
| 430 lbs OR 195 kg | 563 lbs OR 255 kg |
| Fuel Capacity | |
| 4.5 gallons OR 17.0 L | 4.5 gallons OR 17.0 L |
| Wheelbase | |
| - | 65.4 in OR 1661 mm |
| tyres specs | |
| Front | |
|---|---|
| 3.50 -18 | 120/70-17 Michelin Power RS |
| Rear | |
| 3.50 -18 | 240/45-17 Michelin Power RS |
