S p e c s: VB1T

1957 - 1958
engine: single cylinder, air cooled 2-stroke
induction: piston ported
bore: 57 mm
stroke: 57 mm
cubic capacity: 145.5 cc
compression ration: 6.3: 1
bhp at rpm: 5.4 @ 5200
lubrication:5%
transmission: 3 speed constant mesh
1st gear: 12.20: 1
2nd gear: 7.46: 1
3rd gear: 4.73: 1
clutch: wet - multiplate
carburetor: Dell'Orto MA 19D
main jet: 75
pilot jet: 40
throttle valve: No 50
ignition: contact breaker & coil
ignition timing: 28 deg. BTDC
breaker gap: 0.3 - 0.5 mm
voltage: 6 volt
max stator output: 6v - 32w
wheels: 8"
tires: 3.50 x 8
max speed: 52 mph
 
click for the VB1T electrical page
 

Thanks to Daniele Campanella for the images.