Ariel Arrow Super Sport 250 (1961-62) vs BMW R 80GS (1990-91)
Comparison technical specifications
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| Make: | Ariel | BMW |
| Model: | Arrow Super Sport 250 | R 80GS |
| Years: | 1961-62 | 1990-91 |
| Engine: | Two stroke, parallel twin | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder |
| Capacity: | 247 cc / 15.1 cu in | 797.5 cc / 48.7 cu in. |
| Bore x Stroke: | 54 x 54 mm | 84.8 x 70.6 mm |
| Cooling System: | Air cooled | Air cooled |
| Compression Ratio: | 10:1 | 8.2:1 |
| Induction: | 1-1/16 in Amal 376 carburettor | 2 x Bing constant depression carburetors |
| Ignition: | Coil | Battery ignition |
| Starting: | Kick | Electric |
| Max Power: | 14.9 kW / 20 hp 2 6500 rpm | 37 kW / 50 hp @ 6500 rpm |
| Clutch: | Multi plate | Dry single plate, with diaphragm spring |
| Transmission: | 4-Speed | 5 Speed |
| Final Drive: | Chain | Shaft |
| Front Suspension: | Trailing link fork | ∅40mm Marzocchi telescopic hydraulic forks. |
| Rear Suspension: | Swing arm, twin shock absorbers/dampers | BMW Paralever swinging arm |
| Front Brakes: | Drum, 6 in, leading shoe | Single ∅285mm disc |
| Rear Brakes: | Drum, 6 in, leading shoe | ∅200mm Drum |
| Front Tyre: | White wall | 90/90 x 21S |
| Rear Tyre: | White wall | 13/80 x 17S |
| Wheelbase: | 1300 mm / 51 in | 1514 mm / 59.6 in |
| Seat Height: | 760 mm / 30 in | 850 mm / 33.5 in |
| Fuel Capacity: | 13.6 L / 3.6 US gal | 24 L / 6.3 US gal |
| Average Consumption: | 3.5 L/100 km / 28.6 km/l / 67 US mpg | 6.3 L/100 km 15.8 km/l / 37 US mpg |
| Top Speed: | 126 km/h / 78 mph | 170.4 km/h / 106 mph |