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BMW R80 Monolever Specifications

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Start of Production

1984

BMW R80 Monolever

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End of Production

1995

Numbers Produced

13,815

Price

10,440 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

58 Nm / 42 ft lb at 4,000 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 64/32/353  -  64/32/354

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 : 1

Rear Wheel Ratio

1 : 3.20

Bevel/Crownwheel

10 / 32 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 / Beru14-7DU / Champion N9YC

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

BMW Monolever swinging arm

Spring Travel Front/Rear

175 / 121 mm (6.88 x 4.76 in)

Wheel Rims, Front

MTH 2.50 x 18 E

Wheel Rims, Rear

MTH 2.50 x 18 E

Tyres, Front

90/90 18 51 H

Tyres, Rear

120/90 18 65 H

Brakes, Front

Single disc brake 285 mm / 11.22 i diameter. Brembo 2 piston caliper

Brakes, Rear

Simplex drum brake 200 mm / 7.87 in diameter

Dimensions/Weights

 

Length x Width x Height

2175 x 800 x 1106 mm (85.62 x 31.49 x 43.54 in)

Wheel Base

1447 mm / 56.96 in

Fuel Tank Capacity

22 litres / 4.83 gal / 5.81 gal US

Unladen Weight with Full Tank

210 Kg / 462 lb

Max. Permissible Weight

440 Kg / 969 lb

Ground Clearance

140 mm / 5.51 in

Seat Height (Unladen)

807 mm (31.8 inches)

Fuel Consumption

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

Top Speed

178 Kph / 110 mph

Acceleration 0 - 100 Kph / 62 mph

6 seconds

Power Graph

BMW R80 Monolever Power Graphs

Power Graph 25 Kw

BMW R80 25 Kw Power Graph

 

 

 

 

Member of BM Riders Club, The BMW Club, BMF, BMWMOA, The Airheads and The Poverty Riders

Check out my other sites at: www.bmridersclub.com & www.boxerman.co.uk