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Start of Production |
1984 |
Click to View |
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End
of Production |
1995 |
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Numbers Produced |
22,069 |
|
Price |
12,690 DM |
|
Engine |
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|
Motor Type |
Four-stroke two cylinder horizontally opposed "Boxer" engine, air cooled |
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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. I'm informed that Swiss models were restricted to
33KW |
|
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 |
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Carburation System |
2
constant depression carburettors, Bing V 64/32/353 - 64/32/354 |
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Engine Lubricating System |
Wet
sump |
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Power Transmission |
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|
Clutch |
Dry
single plate, with lever action diaphragm spring |
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Number of Gears |
5 |
|
Gear Selection |
Dog
type gearbox (ratchet foot lever) |
|
Gearbox Ratios |
4.4 /
2.86 / 2.07 / 1.67 / 1.50 |
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Rear Wheel Ratio |
1 : 3.36 |
|
Bevel/Crownwheel |
11 / 37 teeth |
|
I'm informed
by Didier that some Swiss models used 33/11 gearing |
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Electrical System |
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Ignition System |
Contact
free electronic ignition (Bosch) |
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Alternator |
Bosch
280 W |
|
Starter |
Bosch
0.7 Kw |
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Spark Plugs |
Bosch W 7 DC / Beru 14-7 DU/ Champion N9YC |
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Chassis |
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Type of
Frame |
Double loop tubular frame
with bolt on rear section |
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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 |
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Wheel
Rims, Rear |
MTH
2.50 x 18 E |
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Tyres, Front |
90/90
18 51 H |
|
Tyres, Rear |
120/90
18 65 H |
|
Brakes, Front |
Single
or twin disc brake 285 mm / 11.22 inch diameter. Brembo 2 piston caliper |
|
Brakes, Rear |
Simplex
drum brake 200 mm / 7.87 in diameter |
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Dimensions/Weights |
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|
Length x Width x Height |
2175 x 960 x 1478 mm (85.62 x 37.79 x 58.18 in) |
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Wheel
Base |
1447 mm
/ 56.96 in |
|
Fuel Tank Capacity |
22
litres / 4.83 gal / 5.81 gal US |
|
Unladen
Weight with Full Tank |
227 Kg
/ 500 lb |
|
Max.
Permissible Weight |
440 Kg
/ 969 lb |
|
Ground
Clearance |
140 mm
/ 5.51 in |
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Seat
Height (Unladen) |
807 mm (31.8 inches) |
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Fuel
Consumption |
4.8
litres 100 Km (at constant 90 Kph) / 58 mpg / 48 mpg |
|
Top
Speed |
170 Kph
/ 105 mph |
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Acceleration 0 - 100 Kph / 62 mph |
6.4 seconds |
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Power Graphs
 |
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