Engineering:Ducati 50 Scrambler

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Short description: Two stroke motorcycle by Ducati
Ducati 50 Scrambler
ManufacturerDucati
Production1970-1971
ClassOn/off road
Engine50 cc (3.1 cu in) single cylinder Air-cooled two stroke
Bore / stroke39 mm × 42 mm (1.5 in × 1.7 in)
Compression ratio10.5:1
Power3.27 bhp (2.44 kW) @ 6,000 rpm
TransmissionMultiplate wet clutch, 4 speed
Frame typeDuplex cradle
SuspensionFront: telescopic forks
Rear: swinging arm
BrakesDrum front & rear
TyresFront: 250x18
Rear: 250x17
Wheelbase1,180 mm (46 in)
DimensionsL: 1,840 mm (72 in)
W: 800 mm (31 in)
Seat height730 mm (29 in)
Weight64 kg (141 lb) (dry)
Footnotes / references
[1][2]

The Ducati 100 Scrambler is an on/off road 50 cc (3.1 cu in) single cylinder two stroke motorcycle produced by the Italian manufacturer Ducati in 1970 and 1971. The model was produced to take advantage of the dirt bike craze in Italy at the time. The model used many parts from existing models, keeping R&D costs down.[3] A larger engined version, the 100 Scrambler, was also produced. Styling was similar the 125 Cadet Scrambler.[1] The model did not sell well and was soon dropped.[4]

Technical details

Engine and transmission

The engine of the Scrambler was taken from the 50SL.[1] It was a piston ported two stroke of unit construction and had an alloy head and alloy barrel with a chrome-plated bore.[5] Bore and stroke were 39 mm × 42 mm (1.5 in × 1.7 in) giving a displacement of 50 cc (3.1 cu in). Compression ratio was 10.5:1 and claimed power output was 3.27 bhp (2.44 kW) @ 6,000 rpm.[2]

Fuel was delivered by a 18 mm Dell'Orto UA carburettor[6] and ignition was by flywheel magneto. Petrol/oil mix provided lubrication.[2]

Primary drive was by helical gears to a multi-plate wet clutch[7] and a 4 speed gearbox.[8] Chain drive took power to the rear wheel.[9]

Cycle parts

The duplex frame was the same as that used on the Cadet and SL models.[1] Rear suspension was by swinging arm with twin Marzocchi shock absorbers. At the front Ceriani pattern Marzocchi telescopic forks were fitted. Brakes were 118 mm (4.6 in) diameter drums front and rear.The bike had a high level exhaust and was finished in yellow and black.[10]

References

  1. 1.0 1.1 1.2 1.3 Falloon 2016, p. 100.
  2. 2.0 2.1 2.2 Walker 2003, p. 217.
  3. Walker 2002, p. 29.
  4. Scialino 2017.
  5. Walker 2003, pp. 32, 40.
  6. Walker 2003, p. 232.
  7. Walker 2003, pp. 72,74,103.
  8. Walker 2003, p. 218.
  9. Walker 2003, p. 103.
  10. Falloon 2016, pp. 100-101.

Bibliography

External links