Ducati parallel twins

Ducati 350/500 GTL
ManufacturerDucati
Production1975-1977
ClassStandard
Engine497–350 cc (30.3–21.4 cu in) Air-cooled OHC twin cylinder 360° four stroke
Bore / stroke78 mm × 52 mm (3.1 in × 2.0 in) (500)
71.8 mm × 43.2 mm (2.83 in × 1.70 in) (350)
Compression ratio9.6:1
Top speed170 km/h (110 mph) (500)
147 km/h (91 mph) (350)
Power35 bhp (26 kW) @ 6,500 rpm (500)
TransmissionMultiplate wet clutch, 5 speed
Frame typeSingle cradle
SuspensionFront: telescopic forks
Rear: swinging arm
BrakesDisc front (twin on 500)
Drum rear
TyresFront: 325x18
Rear: 350x18
Wheelbase1,400 mm (55 in)
Weight170 kg (370 lb) (500)
163 kg (359 lb) (350) (dry)
Footnotes / references
[1]
Ducati 350/500 Sports Desmo
Differences from GTL models
Production1977-1981
EngineDesmodromic valve operation
Power50 bhp (37 kW) @ 8,500 rpm (500)42 bhp (31 kW) @ 8,500 rpm (350)
Frame typeDual cradle
BrakesDisc front & rear
Weight185 kg (408 lb) (500)
181 kg (399 lb) (350) (dry)
Footnotes / references
[2][3][4][5]
Ducati 350/500 GTV
Differences from GTL models
Production1977-1981
Top speed175 km/h (109 mph) (500)
145 km/h (90 mph) (350)
Frame typeDual cradle
BrakesDisc front & rear
Weight185 kg (408 lb) (500)
181 kg (399 lb) (350) (dry)
Footnotes / references
[2]

The Ducati parallel twins are a series of 350 cc (21 cu in) and 500 cc (31 cu in) parallel twin SOHC motorcycles produced by the Italian manufacturer Ducati from 1975 to 1981, although 67 Sports Desmos were supplied to Australian importer Frazers in 1983. These were likely built from spares.[4] The 500cc versions were also produced under licence in Spain by MotoTrans, where production continued until 1983.[6][7] Sales were poor and the machines were unreliable, earning them the nickname of paralysed twins.[8][9]

  1. ^ Falloon 2016, p. 126.
  2. ^ a b Falloon 2016, pp. 129, 131.
  3. ^ Walker 2003, p. 23.
  4. ^ a b Aynsley 2022.
  5. ^ 2smoto.
  6. ^ Lamaneta.
  7. ^ Burgaleta 2014.
  8. ^ Edgar 2021, p. 11.
  9. ^ Cooper 2016a.