BMW R 68

BMW R 68 Date 1952 - 1954

Number sold 1.452

Price 3.950,- DM

Engine

internal designation 268 / 2
engine type four-stroke two-cylinder flat-twin
Bore/stroke 72 x 73 mm
Cubic capacity 594 cm3
Max power 35 PS at 7000 U /min
Compression ratio 8 : 1
Valves per cylinder ohv
Carburation system 2 carburettor Typ Bing 1/26/9 - 1/26/10
Engine lubrication forced-feed lubrication
oil pump gear pump

 
Power transmission

Clutch single discs, dry
Number of gears 4
shifting foot shifting (+ auxiliary manual lever on the gear block)
Gear ratios 4,0 / 2,28 / 1,7 / 1,3
Rear wheel ratio 1 : 3,89 (with sidecar 1: 4,75)
Bevel/crown wheel 9 / 35 teeth (with sidecar 7 / 32)

 
Electrical system

Alternator Noris 6 Volt L 45/60 L
Ignition magneto ignition
Spark plugs Bosch W 240 T 1

 
Suspension

designation 251/4
Type of frame twin-loop steel tubular frame
Front suspension telescopic fork
Rear suspension telescopic fork
wheel rims deep-bed3 x 19
Tyres front 3,50 x 19
Tyres rear 3,50 x 19 ( at sidecarbetrieb hinten 4 x 18)
Brakes front drum brake, 200 mm Duplex, ab 1954: full hub
Brakes rear drum brake, 200 mm Simplex, ab 1954: full hub

 
Dimensions and weights

Length x width x height 2130 x 725 x 985 mm
Wheel base 1400 mm
Tank capacity 17 l
Unladen weight, full tank 190 kg (with orig. BMW sidecar 320 kg)
load rating 355 kg (with orig. BMW sidecar 600 kg)
idle/riding noise 85 / 96 phon ab 07.07.1953: 80 / 87 phon
Fuel consumption ca. 4,6 l / 100 km
oil consumption ca. 0,7 l / 1000 km
Top speed 160 km/h (with orig. BMW sidecar 116 km/h)