Start of Production

1982

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End of Production

1984

Numbers Produced

7,315

Price

10,990 DM

Engine

 

Motor Type

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

Bore x Stroke

84.8 x 70.6 mm (3.33 x 2.77 in)

Displacement

797.5 cc

Max Power

50 hp (37 KW) at 6,500 rpm

Max Torque

59 Nm / 43 ft lb at 3,500 rpm

Compression Ratio

8.2 : 1

Valves Per Cylinder

2

Valve Control

OHV, using push rod and rocker arm

Carburation System

2 constant depression carburettors, Bing V 64/32/305  -  64/32/306

Engine Lubricating System

Wet sump



Power Transmission

 

Clutch

Dry single plate, with lever action 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

Rear Wheel Ratio

1 : 3.36

Bevel/Crownwheel

11 / 37 teeth



Electrical System

 

Ignition System

Contact free electronic ignition (Bosch)

Alternator

Bosch 280 W

Starter

Bosch 0.7 Kw

Spark Plugs

Bosch W 7 D / Beru14-7D / Champion N10Y






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

200 / 125 mm (7.87 x 4.92 in)

Wheel Rims, Front

2.15 B 19

Wheel Rims, Rear

2.50 B 18

Tyres, Front

3.25 H 19

Tyres, Rear

4.00 H 18

Brakes, Front

Single or twin disc brake 260 mm / 10.23 in diameter. Brembo 2 piston caliper

Brakes, Rear

Simplex drum brake 200 mm / 7.87 in diameter







Dimensions/Weights

 

Length x Width x Height

2210 x 746 x 1465 mm (87.00 x 29.37 x 57.67 in)

Wheel Base

1465 mm / 57.67 in

Fuel Tank Capacity

24 litres / 5.27 gal / 6.34 gal US

Unladen Weight with Full Tank

235 Kg / 517 lb

Max. Permissible Weight

440 Kg / 969 lb

Ground Clearance

130 mm / 5.11 in

Seat Height (Unladen)

820 mm (32.3 inches)

Fuel Consumption

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

Top Speed

161 Kph / 100 mph

Acceleration 0 - 100 Kph / 62 mph

7.1 seconds

Information kindly supplied by P.Hawksley

www.bmbikes.co.uk