Segment: Clasic
Production years: 1928, 1929
In 1928, BMW released four motorcycles, two updated versions of the 500cc models, the R 42 and R47, which were offered as R 52 and R57. The R62 tourer and the R63 which was the top model in the BMW range and the first motorcycle in the 750cc class. The R63 was a sports motorcycle with a short-stroke engine intended for sports drivers.
The R63 chassis consisted of a tubular steel frame that was replaced in 1929 with a pressed steel frame featured by the new models, which resulted in a short period of production for the R63 model. Onto the tubular frame, the model featured a fork with a pulled-short swingarm, leaf springs mounted above the front fender, and a rigid rear with springs mounted under the seat.
For braking power, the model featured a 200 mm drum on the front wheel, and the rear brake was designed as a cardan brake that acted on the outer ring of the Hardy disk.
The longitudinally installed two-cylinder boxer engine with a 735cc displacement had an output power of 24 hp available at 4,000 rpm. With a curb weight of 152 kg (335 lbs), the model could hit a top speed of 120 kph (74 mph).
Even though the 1928 BMW R63 had a spicy price, in the one-year production period were sold almost 800 units.
engine specs | Type: | air-cooled, four-stroke, two-cylinder boxer engine | Displacement: | 735 cm3 | Bore X Stroke: | 3.3x2.7 in OR 84 mm | Compression Ratio: | 6.2:1 | Horsepower: | 24/4000 KW(hp)/RPM | Torque: | 0/- lb-ft/RPM OR 0 Nm/RPM | Fuel System: | 1x24mm Spezial carburetor |
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transmission specs | Gearbox: | 3-speed, manual | Clutch: | dry, single plate | Primary Drive: | - | Final Drive: | shaft |
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chassis specs | Frame: | steel | Front Suspension: | plate spring fork | Rear Suspension: | hard-tail, sprung seat | Front Brake: | 200mm drum | Rear Brake: | external shoe brake at the gearing on the cardan shaft |
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dimension specs | Overall Length: | - | Overall Width: | - | Seat Height: | - | Wheelbase: | - | Ground Clearance: | - | Weight: | 335 lbs OR 152 kg | Fuel Capacity: | 3.2 gallons OR 12.1 L |
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tyres specs | Front: | 26 x 3.5 | Rear: | 26 x 3.5 |
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power system specs | Power pack: | - | Nominal Capacity: | - | Maximum Capacity: | - | Charger type: | - | Charging time (normal): | - | Charging time (quick): | - | Range: | - |
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