Start of Production

1981

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End of Production

1985

Numbers Produced

6,389

Price

8,955 DM

Engine

R65LS - Luxus Sport

Motor Type

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

Bore x Stroke

82 x 61.5 mm (3.22 x 2.42 in)

Displacement

649.6 cc

Max Power

50 hp (37 Kw) at 7,250

Max Torque

52.3 Nm  / 38 ft lb at 6,500 rpm

Compression Ratio

9.2 : 1

Valves Per Cylinder

2

Valve Control

OHV, using push rod and rocker arm

Carburation System

2 constant depression carburettors, Bing 64/32/307 - 64/32/308

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

Rear Wheel Ratio

1: 3.44

Bevel/Crownwheel

9 / 31 teeth



Electrical System

 

Ignition System

Contact free electronic ignition

Alternator

Bosch 280 W

Starter

Bosch 0.7 hp

Spark Plugs

Bosch W 5 D / Beru 14-5D / Champion N 6 Y






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

175 / 110 mm (6.88 / 4.33 in)

Wheel Rims, Front

2.15 B 18

Wheel Rims, Rear

2.50 B 18

Tyres, Front

3.25 S 18

Tyres, Rear

4.00 S 18

Brakes, Front

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

2110 x 688 x 1080 mm (83.07 x 27.08 x 42.51 in)

Wheel Base

1390 mm / 54.7 in to 1980. 1400 mm / 55.11 in 1981 on

Fuel Tank Capacity

22 litres / 4.83 gal / 5.81 gal US

Unladen Weight with Full Tank

207 Kg / 455 lb

Max. Permissible Weight

398 Kg / 876 lb

Ground Clearance

130 mm / 5.11 in

Seat Height (Unladen)

810 mm (31.9 inches)

Fuel Consumption

4.6 litres 100 Km (at constant 90 Kph) / 61 mpg / 51 mpg US

Top Speed

175 Kph / 108 mph

Acceleration 0 - 100 Kph / 62 mph

5.8 seconds

Information kindly supplied by P.Hawksley

www.bmbikes.co.uk