Comparisons / Comparison of Triumph Bonneville T120R Roadster 1964 and Triumph T120 C Bonneville 1960

Comparison of Triumph Bonneville T120R Roadster 1964 and Triumph T120 C Bonneville 1960 [S]ave

Attribute
Triumph Bonneville T120R Roadster 1964 ×
Triumph T120 C Bonneville 1960 ×
General
Production from (year)19641960
MakeTriumphTriumph
ModelTriumph Bonneville T120R RoadsterTriumph T120 C Bonneville
CategorySportAllround
Engine and transmission
Engine typeTwin, four-strokeTwin, four-stroke
Fuel systemCarburettor. Amal monobloc carburettorCarburettor. Amal monobloc carburettor
Displacement (cm³)649649
Power (kw)33.633.6
Cooling systemAirAir
Transmission type,final driveChainChain
Bore (mm)7171
Stroke (mm)8282
Gearbox4-speed4-speed
Fuel controlOverhead Valves (OHV)Overhead Valves (OHV)
IgnitionLucas K2F auto-advance MagnetoLucas K2F auto-advance Magneto
ClutchMulti-plate, wetMulti-plate, wet
Compression8.5:1-
Chassis
Front suspensionTelescopic fork, hydraulic damping.Telescopic fork, hydraulic damping.
Rear suspensionSwing arm, 2 Girling dampersTwin shocks. Girlings 100 lb/ft spring tension, adjustable pre-set.
Front brakesExpanding brake (drum brake)Expanding brake (drum brake)
Rear brakesExpanding brake (drum brake)Expanding brake (drum brake)
Diameter (mm)178178
Frame typeBrazed lug, full-cradle, single downtubeDuplex frame
Front tyre3.25-193.25-18
Rear tyre4.00-184.00-18
SeatDual seatDual seat
WheelsWire spoked-
Rake (fork angle) (degree)26-
Other
StarterKick-
Color options
  • gold/alaskan white
  • sky blue/silver sheen/gold pinstripe
InstrumentsSmiths Magnetic gauges-
Dimensions
Wheelbase (mm)1,4031,400
Dry weight (kg)165178
Power/weight ratio0.20360.1888
Seat height (mm)775770
Ground clearance (mm)127127
Performance
Top speed (km/h)185185
Fuel capacity (l)15.1415.14



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