1969 Triumph Bonneville SPECIFICATIONS:

MODEL DESIGNATIONS:
 1969 Triumph Bonneville T120C..................... Scrambler
 1969 Triumph Bonneville T120R..................... Roadster

ENGINE:
 Engine type....................................... OHV vertical twin
 Horsepower at RPM............................ 49 BHP @ 6,200 rpm
 Bore................................................ 71mm / 2.79"
 Stroke............................................. 82mm / 3.23"
 Displacement.................................... 649cc / 40 cu. in.
 Compression Ratio............................. 9.0:1
 Valve Clearance (cold):
 Inlet................................................ 0.05mm / 0.002"
 Exhaust............................................ 0.10mm / 0.004"
 Valve Timing:
 Inlet Valve Opens.............................. 34 degrees BTDC
 Inlet Valve Closes.............................. 55 degrees BTDC
 Exhaust Valve Opens.......................... 55 degrees BTDC
 Exhaust Valve Closes.......................... 27 degrees BTDC

IGNITION:
 Ignition Breaker Gap............................. 0.4mm / 0.015"
 Spark Plug Gap.................................. 0.50mm / 0.020"
 Timing (static).................................14 degrees BTDC
 Timing (fully advanced):........................ 38 degrees BTDC

CARBURETORS:
 Type................................................ Amal Concentric
 Throat Size....................................... 30mm
 Main Jet........................................... 210
 Needle Jet........................................ .107
 Needle Position.................................. 2
 Needle Type.......................................D
 Throttle Valve.................................... 2
 Pilot Jet............................................ 25

TRANSMISSION:
 Speeds.............................................. 4
 Gear Ratios:
 4th - Top........................................... 5.84
 3rd - Third......................................... 6.76
 2nd - Second...................................... 8.17
 1st - Bottom...................................... 11.8

CLUTCH:
 Type................................................ Multi-plate, wet
 Number of Plates:
 Drive Plates...................................... 6
 Driven Plates.................................... 6

SPROCKETS:
 Engine............................................. 29 teeth
 Clutch............................................. 58 teeth
 Gearbox.......................................... 19 teeth
 Rear Wheel...................................... 47 teeth

CHAIN:
 Primary, pitch.................................. 3/8" triplex
 Primary, length................................. 84 links
 Final Drive, pitch............................... 5/8" X .400" X 3/8"
 Final Drive, length............................. 106 links

CAPACITIES:
 Fuel (US versions)............................. 2.5 Imp. gal.
 Fuel (UK & export versions)................. 4 Imp. gal.
 Oil Tank........................................... 5 pints / 3 L
 Gearbox........................................... 1 pt / 500cc
 Primary Chaincase............................. 1/4 pt / 150cc
 Front Forks....................................... 6.4 oz. / 190cc

TIRES:
 Front............................................... 3.25 X 19"
 Rear................................................ 4.00 X 18"

SUSPENSION:
 Front............................................... Telescopic Forks
 Rear................................................ Swing Arm
 BRAKES:
 Front............................................... 8" / 20.32cm TLS
 Rear................................................ 7" / 17.78cm SLS

DIMENSIONS:
 Seat Height...................................... 32.5" / 77.5cm
 Wheelbase........................................ 54.5" / 140.3cm
 Length.............................................. 85.5" / 202cm
 Width............................................... 28.5" / 72cm
 Ground Clearance.............................. 5" / 12.7cm
 Weight, unladen................................ 363 lbs / 165kg
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Version: 02.01.14