V5A2M is a Vespa engine prefix/VIN code.
V5A2M is engine VIN number for 50cc engine used in 50 Special, 50 Special, 50r, 50r vespa models made through years 1969 - 1983.
P.S. This engine VIN number is for the engine block/casing and it doesn't mean that over the years and even accross the models there isn't slight modifications of this engine parts, their sizes or even internals.
V5A2M engine specification
50 Special (1969 - 1975) V5A2M engine specs
engine: single cylinder, air cooled 2-stroke induction: disc valve bore: 38.4 mm stroke: 43 mm cubic capacity: 49.77 cc compression ratio: 7.2:1 bhp at rpm: lubrication: 2% oil transmission: 3 speed constant mesh 1st gear: 1: 25.12 2nd gear: 1: 14.13 3rd gear: 1: 8.94 clutch: wet - multiplate carburetor: Dell'Orto SHB 16/10 main jet: 51 pilot jet: 38 ignition: contact breaker & coil ignition timing: 19 degrees BTDC breaker gap: 0.3 - 0.5 mm voltage: 6 volt AC wheels: 9" tires: 2.75 x 9"
50r (1969 - 1983) V5A2M engine specs
Production 448,000 copies total number R 868 760 copies Colors red blue green yellow Frame numbers V5A1T 893568-938761 Engine Cylinders / time 2-stroke single cylinder Displacement 49.8 cc Bore and stroke 38.4 X 43 mm Compression ratio 7,5:1 Power / RPM 1.5 hp / 4500 rpm Torque / revs nd Cooling Forced air Distribution rotating Supply Carburetor orchard 16 \ 10 Mixture 2% Ignition flywheel Start Crank Clutch multidisc in oil bath Change 3-speed knob Cycling Frame Monocoque Front suspension Connecting rod wheel pulled with rubber elements Rear Suspension Coil spring and shock absorber Final Drive Direct Wheels Interchangeable with embossed circle decomposable Front brake 125 mm drum Rear brake 135 mm drum Tires 2.75 X 9 front and rear Dimensions and Weight Length 1655 mm Width 610mm Seat height 745 mm Wheelbase 1175 mm Tank 5.2 liters Weight 67 Kg Performance claims Speed 'maximum 40 km / h acceleration nd consumption 1.5 l \ 100 km
| 50 Special | 1969-1975 | 50 Special |
| 50r | 1969-1983 | 50r |