S p e c s: 09C

1969 - 1979
engine: single cylinder, air cooled 2-stroke
induction: piston ported
bore: 60mm
stroke: 57mm
cubic capacity: 161.16 cc
compression ration: 7.8:1
bhp at rpm: 7.8 @ 5200
lubrication: 5%
transmission: 4 speed constant mesh
1st gear: 13.98
2nd gear: 10.06
3rd gear: 7.13
4th gear: 5.16
clutch: wet - multiplate
carburetor: Dell'Orto/Irz
main jet:
slow running jet:
diffuser:
main air bleed:
starter jet:
ignition: femsatronic
ignition timing: 22 BTDC
breaker gap: n/a
voltage: 12V - 35w stator
wheels: 10"
tires: 3.50 x10
max speed: 95 kph
weight: 98 kg
 
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Definitely a weird one - electronic ignition similar to Serveta Lambrettas, but still piston ported. The body is basically a Sprint but the engine is a weird hybrid of old and new technology. Thanks to Manuel for the images (click on them to get a bigger view).

There appear to be 3 versions of this bike:

  • 1969-1973 was simply called the MotoVespa 160, and was available only in blue and had Vespa Sprint style aluminum trim on the mudguard and side panels.
  • 1973 - 1979 MotoVespa GT160 was available in many colors and didn't have the aluminum trim pieces like the previous models and had "electronic: stickers similar to a Vespa Rally 200.
  • 1974 MotoVespa GTi160 was the same as previous models but had handlebar end mounted indicators (the "i" came from the Spanish word for indicators/blinkers "intermitente") and the legshield script was made from plastic instead of metal like the other models.

Thanks to Patricio Paniagua & Bill Drake for the info and Peter Ward for the crank shots. Crank appears to be the same as a Vespa SS180/GS160.