BMW R 90s 1973 Specifications

Complete specifications and review of the 1973 BMW R 90s

BMW R 90s 1973 Specifications

Specifications

SpecificationValue
BrandBMW
ModelR 90s
Year1973
Imagehttps://cdn.motorcycles-specs.com/bmw-r-90s-1973.jpg
SpecificationValue
Year1973
Bore x Stroke90 x 70.6 mm
Capacity898 cc / 54.8 cu in.
Charging System12V 280W alternator
ClutchDry single plate, with diaphragm spring
Compression Ratio9.5:1
Consumption Average5.1 L/100 km / 19.6 km/l / 46 mpg
Cooling SystemAir cooled
DimensionsLength 2180 mm / 85.82 in Width 740 mm / 29.13 in Height 1210 mm / 47.63 in
EngineFour stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Final DriveShaft
FrameDouble-loop tubular frame with bolt-on rear section
Front Brakes2 x ∅260mm discs, 1 piston caliper
Front SuspensionTelescopic fork with hydraulic shock absorber
Front Tyre3.25 - H19
Front Wheel1.85 - B19
Front Wheel Travel208 mm / 8.1 in
Fuel Capacity24 Litres / 6.3 US gal
Gear Ratios1st 4.40 / 2nd 2.86 / 3rd 2.07 / 4th 1.67:1 / 5th 1.50:1
Ground Clearance165 mm / 6.49 in
IgnitionKettering
Induction2 x slide Dell'Orto PHM 38 carburetors
LubricationGear driven pump
Max Power48.8 kW / 67 hp @ 7000 rpm
Max Torque76 Nm / 7.6 kgf-m / 55 ft-lb @ 5500 rpm
Production17465 units
Rear Brakes∅200mm Drum
Rear SuspensionLong swinging arm with adjustable strut.
Rear Tyre4.00 - H18
Rear Wheel2.15 - B18
Rear Wheel Travel125 mm / 4.9 in
Road TestCycle 1976
Seat Height820 mm / 32.2 in
Standing ¼ Mile13.3 sec / 163 km/h / 101 mph
StartingElectric
Top Speed200 km/h / 124 mph
Transmission5 Speed
Wet Weight215 Kg / 473 lbs
Wheelbase1465 mm / 57.67 in