BMW R 100 (1982-84) vs BMW R 63 (1928-29)
Comparison technical specifications
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| Make: | BMW | BMW |
| Model: | R 100 | R 63 |
| Years: | 1982-84 | 1928-29 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder. |
| Capacity: | 980 cc / 59.8 cu in. | 745 cc / 45.5 cu in. |
| Bore x Stroke: | 94 x 70.6 mm | 83 x 68 mm |
| Cooling System: | Air cooled | Air cooled |
| Compression Ratio: | 8.2:1 | 6.2:1 |
| Induction: | 2 x Constant depression carburetors, Bing V 94/40/111 - 94/40/112 | 1 x Spezial 2 valve ∅24 mm carburetor |
| Starting: | Electric | Kick |
| Max Power: | 48.8 kW / 66.6 hp @ 7000 rpm | 17.9 kW / 24 hp @ 3400 rpm |
| Clutch: | Single dry plate | Single plate, dry |
| Gear Ratio: | 1st 4.40. 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50:1 | 1st 2.83 / 2nd 1.55 / 3rd 1.08:1 |
| Frame: | Double sown tubs, dual cradle | Twin loop steel tubular frame |
| Front Suspension: | Telescopic fork with hydraulic shock absorber. | Plate spring, 6 laminae |
| Rear Suspension: | Long swinging arm with adjustable strut. | Rigid, spring loaded saddle |
| Front Brakes: | Single 260mm disc | ∅200mm Drum |
| Rear Brakes: | 200 Drum | External shoe brake at the gearing on Cardan shaft |
| Front Tyre: | 3.25 - H19 | 26 x 3.5" or 19 x 3.0" or 27 x 2.75" or 21 x 2.5" |
| Rear Tyre: | 4.00 - H18 | 26 x 3.5" or 19 x 3.0" or 27 x 2.75" or 21 x 2.5" |
| Wet Weight: | 218 Kg / 480 lbs | 152 kg / 334 lb |
| Fuel Capacity: | 24 L / 6.3 US gal | 12.5 liters / 3.3 US gal |