                      
|
BMW R90S 1976 Daytona orange
|
BMW R90S är en sport motorcykel som tillverkades av BMW mellan 1973 och 1976. R90S anses av många vara en av de första superbikes.Den första amerikanska AMA Superbike Championship vanns 1976 av Reginald Charles Pridmore på R90S.
|
|
R90S 1976
Motor Type
Four-stroke two cylinder horizontally opposed "Boxer" engine, air cooled
Bore x Stroke
90 x 70.6 mm (3.54 x 2.77 in)
Displacement
898 cc
Max Power
67 hp (49.3 KW) at 7,000 rpm
Max Torque
76 Nm / 56 ft lb at 5,500 rpm
Compression Ratio
9.5 : 1
Valves Per Cylinder
2
Valve Control
OHV, using push rod and rocker arm
Carburation System
2 slide carburettors, Dellorto PHM 38 AS-AD or 38 BS-BD
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 (optional sport version: 3.38 / 2.43 / 1.93 / 1.67 / 1.50 : 1
Rear Wheel Ratio
1: 3.00 or 1 : 2.91
Bevel/Crownwheel
11 / 33 or 11 / 32 teeth
Electrical System
Ignition System
Battery ignition
Alternator
Bosch 12 V/280 W
Starter
Bosch 0.5 hp
Spark Plugs
Bosch W 200 T 30 / Beru 200/14/3 A / Champion N7Y
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 (8.18 x 4.92 in)
Wheel Rims, Front
1.85 B 19
Wheel Rims, Rear
2.15 B 18
Tyres, Front
3.25 H 19
Tyres, Rear
4.00 H 18
Brakes, Front
Dual disc brake 260 mm / 10.23 in diameter. ATE 1 piston caliper
Brakes, Rear
Simplex drum brake 200 mm / 7.87 in diameter
Dimensions/Weights
Length x Width x Height
2180 x 740 x 1210 mm (85.82 x 29.13 x 47.63 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
215 Kg / 473 lb
Max. Permissible Weight
398 Kg / 876 lb
Ground Clearance
165 mm / 6.49 in
Seat Height (Unladen)
820 mm (32.2 inches)
Fuel Consumption
5.0 litres 100 Km (at constant 90 Kph) / 56 mpg / 47 mpg US
Top Speed
200 Kph / 124 mph
Acceleration 0 - 100 Kph / 62 mph
4.8 seconds
|
|
 |
