Sunbeam Model 6 "Lion" (1921-37) vs Sunbeam S7 500, S7 500 De Luxe (1946-56) vs Derbi GPR 125 (2011-) vs KTM 690 Duke (2015) vs Sunbeam Model 7 and 7A (1922-40)
Comparison technical specifications
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| Make: | Sunbeam | Sunbeam | Derbi | KTM | Sunbeam |
| Model: | Model 6 "Lion" | S7 500, S7 500 De Luxe | GPR 125 | 690 Duke | Model 7 and 7A |
| Years: | 1921-37 | 1946-56 | 2011- | 2015 | 1922-40 |
| Engine: | Single cylinder, side valve | Parallel twin, SOHC | Two stroke, single cylinder | Four stroke, single cylinder, SOHC, 4 valves | Single cylinder, side valve |
| Capacity: | 492 cc / 30.0 cu in | 487 cc / 29.7 cu in | 124.7 cc / 7.6 cu-in | 690 cc / 42.1 cu in | 596 cc / 36.4 cu in |
| Bore x Stroke: | 77 x 105.5 mm | 70 x 63.5 mm | 56 x 50 mm | 102 x 84.5 mm | 77 x 105.5 mm |
| Cooling System: | Air cooled | Air/Oil cooled | Liquid cooled | Liquid Cooled | Air cooled |
| Starting: | Kick | Kick | Electric | Electric | Kick |
| Transmission: | 3-Speed wide ratio | 4-Speed | 6 Speed | 6 Speed | 4-Speed |
| Final Drive: | Chain | Shaft | Chain | Chain X-Ring 5/8 x 5/16" | Chain |
| Front Suspension: | Druid forks | Telescopic, one way damped | 40mm Fourche USD hydraulic forks, 120mm wheel travel | WP Upside-down forks, 4357 ROMA | Druid forks |
| Rear Suspension: | Rigid, spring loaded saddle | Plunger, spring loaded saddle | Monoshock, 110mm wheel travel | WP monoshock, 4618 with Pro-lever deflector | Rigid, spring loaded saddle |
| Front Brakes: | Drum | Drum, leading shoe, 203 mm / 8" | Single 300mm disc 4 piston caliper | Single 320 mm floating disc, radially screwed four-piston brake caliper | Drum |
| Rear Brakes: | Drum | Drum, leading shoe, 203 mm / 8" | Single 180mm disc 2 piston caliper | Single 240 mm floating disc, single piston caliper | Drum |