BMW R68
Today is

      1954 BMW R68
R68 production dates: 1952 — 1954
Number sold 1,453
German Price: DM  3,950.-
Value in 2012:   $50,000 to $60,000
in concours condition


1952-1954 R68 Engine Numbers:   650 001 — 651 453


Engine
Internal designation268 / 1
Typefour-stroke, two-cylinder, air-cooled boxer
Bore/stroke72 x 73 mm (2.83 X 2.87 inches)
Cubic capacity 594 cm3 (34 inches3)
Maximum power35 HP at 7000 RPMs
Compression ratio8.0 : 1
Valves per cylinderohv
Carburation system2 Bing 1/26/9 - 1/26/10
Engine lubricationforced-feed lubrication
Oil pumpgear pump
Power Transmission
Clutchsingle disc saucer spring, dry
Number of gears4
Shifting foot shifting (auxiliary manual lever on gear block)
Speedometer ratios1.52 for MPH — 0.95 for Km/h
Gear ratios4.00 / 2.28 / 1.7 / 1.3 (with sidecar: 5.33 / 3.02 / 2.04 / 1.54)
Rear wheel ratio1 : 3.89 (with sidecar 1 : 4.75)
Bevel/crown wheel9 / 32 teeth solo (8 / 35 teeth with sidecar)
Electrical System
GeneratorNoris 6V 45/60 L
Ignitionmagneto ignition
Spark plugsBosch W 240 T 1 or Beru 240 / 14
Suspension
Designation251/4
Type of frameDouble-loop steel tubular frame
Front suspensionTelescopic fork
Rear suspensionTelescopic (plunger) suspension
Wheel rims3.50 x 19
Tires front3.50 x 19
Tires rear3.50 x 18 ( at sidecarbetrieb hinten 4 x 18)
Brakes frontDrum brake Ø 200mm / 7.87 inches diameter duplex; for 1954: full hub
Brakes rearDrum brake, Ø 200 mm / 7.87 in diameter simplex; from 1954 full hub
Dimensions and Weights
Length x width x height 83.85 x 28.5 x 38.77 inches (2130 x 725 x 985 mm)
Wheel base 55.1 inches (1400 mm)
Tank capacity 4.49 gallons (17 liters)
Unladen weight, full tank422 pounds (190 kilograms; with orig. BMW sidecar 320 kilograms)
Load rating781 pounds (355 kilograms) solo
Performance
Idle/riding noise85/96 DIN-phon (from 7/7/1953: 80 / 87 dB (A))
Fuel consumption 51.0 MPG (ca. 4.6 liters / 100 km)
Oil consumptionca. 0.7 liters / 1000 km
Top speed 105 MPH (168 km/h)