BMW R 63

BMW R 63 Date 1928-1929

Number sold 794

Price 2.100,- RM

Engine

Internal Designation M 60
Engine type four-stroke two-cylinder flat-twin
Bore/stroke 83 x 68 mm
Cubic capacity 735 cm3
Max power 24 PS at 4000 U /min
Compression ratio 6,2 : 1
Valves per cylinder ohv
Carburation system 1 carburettor, Typ BMW Spezial two-valve 24 mm
Engine lubrication forced-feed lubrication
Oil pump gear pump

Power transmission

Clutch single discs, dry - from engine no. 75845: two discs
Number of gears 3
Shifting manual
Gear ratios 2,83 / 1,55 / 1,08
Rear wheel ratio 1 : 4,07 (sidecar 1 : 4,75)
Bevel/crown wheel 14 / 57 teeth (sidecar 12 / 57)

Electrical system

Alternator magneto generator on request Bosch
Ignition Bosch high-voltage magneto ignition
Spark plugs Bosch W 175 or W 200

Suspension

Designation F 56
Type of frame twin-loop steel tubular frame
Front suspension plate spring, 6 laminae
Rear suspension rigid
wheel rims deep-bed 19 x 3 or 21 x 2,5
Tyres front 26 x 3,5 on 19 x 3 or 27 x 2,75 on 21 x 2,5
Tyres rear 26 x 3,5 on 19 x 3 or 27 x 2,75 on 21 x 2,5
Brakes front drum brake 200 mm
Brakes rear external shoe brake at gearing (on cardan shaft)

Dimensions and weights

Length x width x height 2100 x 800 x 950 mm
Wheel base 1400 mm
Tank capacity 12,5 l
Unladen weight, full tank 152 kg
Load rating 210 kg
Fuel consumption ca. 5 l / 100 km
Oil consumption ca. 1 - 2 l / 1000 km
Top speed 120 km/h

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