BMW R68 Classic of 1952

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, Ø 200 mm Duplex, ab 1954: full hub
Brakes rear	drum brake, Ø 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)

Total made 1452