S p e c s: 788.94370 (VMA1T)

1966
engine: single cylinder, air cooled 2-stroke
induction: disc valve
bore: 55 mm
stroke: 51 mm
cubic capacity: 121.1 cc
compression ratio: 7.2: 1
bhp at rpm: 4.5 @ 5700
transmission: 4 speed constant mesh
1st gear: 14.74: 1
2nd gear: 9.80: 1
3rd gear: 7.06: 1
4th gear: 5.31: 1
clutch: wet - multiplate
lubrication: 2% (pre-mix)
carburetor: Dell'Orto SHB 16/16
main jet: 74
slow running jet: 42
throttle valve: No 2
starter jet: 50
ignition: contact breaker & coil
ignition timing: 24 deg. BTDC
breaker gap: 0.3 - 0.5 mm
voltage: 6 volt
wheels: 10"
tires: 3.00 x 10
 
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Thanks to Jeff Post for the images