Sunbeam Model 6 "Lion" (1921-37) vs Sunbeam S7 500, S7 500 De Luxe (1946-56)
Comparison technical specifications
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| Make: | Sunbeam | Sunbeam |
| Model: | Model 6 "Lion" | S7 500, S7 500 De Luxe |
| Years: | 1921-37 | 1946-56 |
| Engine: | Single cylinder, side valve | Parallel twin, SOHC |
| Capacity: | 492 cc / 30.0 cu in | 487 cc / 29.7 cu in |
| Bore x Stroke: | 77 x 105.5 mm | 70 x 63.5 mm |
| Cooling System: | Air cooled | Air/Oil cooled |
| Compression Ratio: | 5.0:1 | 6.5:1 |
| Starting: | Kick | Kick |
| Transmission: | 3-Speed wide ratio | 4-Speed |
| Final Drive: | Chain | Shaft |
| Frame: | Single downtube cradle | Twin cradle, steel |
| Front Suspension: | Druid forks | Telescopic, one way damped |
| Rear Suspension: | Rigid, spring loaded saddle | Plunger, spring loaded saddle |
| Front Brakes: | Drum | Drum, leading shoe, 203 mm / 8" |
| Rear Brakes: | Drum | Drum, leading shoe, 203 mm / 8" |
| Wheelbase: | 1359 mm / 53.5" | 1400 mm / 57" |
| Dry Weight: | 136 kg / 300 lbs | 195 kg / 430 lbs |
| Source: | Sunbeamsidevalve.com | Sump Publishing |