Start of Production

1973

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End of Production

1976

Numbers Produced

13,511

Price

5,992 DM

Engine

 

Motor Type

Four-stroke two cylinder horizontally opposed "Boxer" engine, air cooled

Bore x Stroke

73.5 x 70.6 mm (2.89 x 2.77 in)

Displacement

599 cc

Max Power

40 hp (29.5 KW) at 6,400 rpm

Max Torque

49 Nm  / 36 ft lb at 5,000 rpm

Compression Ratio

9.2 : 1

Valves Per Cylinder

2

Valve Control

OHV, using push rod and rocker arm

Carburation System

2 slide carburettors, Bing 1/26/111 - 1/26/112 or 1/26/123 - 1/26/124

Engine Lubricating System

Wet sump



Power Transmission

 

Clutch

Dry single plate, with diaphragm spring

Number of Gears

5

Gear Selection

Dog type gearbox (ratchet foot lever)

Gearbox Ratios

4.4 / 2.86 / 2.07 / 1.67 / 1.50 : 1

Rear Wheel Ratio

1: 3.36

Bevel/Crownwheel

11 / 37 teeth



Electrical System

 

Ignition System

Battery ignition

Alternator

Bosch 12 V/280 W

Starter

Bosch 0.5 hp

Spark Plugs

Bosch W 230 T 30 / Beru 230/14/3 A






Chassis

 

Type of Frame

Double loop tubular frame with bolt on rear section

Front wheel suspension

Telescopic fork with hydraulic shock absorber

Rear wheel suspension

Long swinging arm with adjustable strut

Spring Travel Front/Rear

208 / 125 mm

Wheel Rims, Front

1.85 B 19

Wheel Rims, Rear

2.15 B 18

Tyres, Front

3.25 S 19

Tyres, Rear

4.00 S 18

Brakes, Front

Duplex drum brake 200 mm / 7.87 in diameter

Brakes, Rear

Simplex drum brake 200 mm / 7.87 in diameter




Dimensions/Weights

 

Length x Width x Height

2180 x 740 x 1080 mm (85.82 x 29.13 x 42.51 in)

Wheel Base

1465 mm / 57.67 in

Fuel Tank Capacity

18 litres / 3.95 gal / 4.75 gal US (optional 22 litre / 4.83 gal / 5.81 gal US tank at extra charge)

Unladen Weight with Full Tank

210 Kg / 462 lb

Max. Permissible Weight

398 Kg / 876 lb

Ground Clearance

165 mm / 6.49 in

Seat Height (Unladen)

810 mm (31.9 inches)

Fuel Consumption

5.5 litres 100 Km (at constant 90 Kph) / 51 mpg / 42 mpg US

Top Speed

167 Kph / 103 mph

Acceleration 0 - 100 Kph / 62 mph

7.7 seconds

Information kindly supplied by P.Hawksley

www.bmbikes.co.uk