BMW R 1250R (2019) vs Sunbeam Model 4 de Luxe (1924-26)
Comparison technical specifications
Add bike |
Remove bike |
Remove bike |
| Make: | BMW | Sunbeam |
| Model: | R 1250R | Model 4 de Luxe |
| Years: | 2019 | 1924-26 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, with two overhead, spur gear driven camshafts , a counterbalance shaft and variable intake camshaft control system BMW ShiftCam, 4 valves per cylinder | Single cylinder, side valve |
| Capacity: | 1254 cc / 76.5 cu-in | 596 cc / 36.4 cu in |
| Bore x Stroke: | 102.5 x 76 mm | 85 x 105.5 mm |
| Cooling System: | Liquid / Air cooled | Air cooled |
| Starting: | Electric 900W | Kick |
| Transmission: | Constant mesh 6-speed gearbox with helical gearing system | 3-Speed |
| Final Drive: | Shaft | Chain |
| Frame: | Two-section frame concept consisting of main frame with bolt-on rear frame, load-bearing engine | Single downtube cradle |
| Front Suspension: | Telescopic Upside-Down fork; stanchion diameter 45 mm | Druid forks |
| Rear Suspension: | Cast aluminium single-sided swing arm with BMW Motorrad Paralever; WAD strut (travel- related damping), spring pre-load hydraulically adjustable (continuously variable) at handwheel, rebound damping adjustable at handwheel | Rigid, spring loaded saddle |
| Front Brakes: | 2x 276mm floating discs, 4-piston radial brake calipers | Drum |
| Rear Brakes: | Single 276mm disc, 2-piston floating caliper | Drum |
| Wheels: | Cast aluminium wheels | Steel, laced wire spokes |