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Vespa (Piaggio) Vespa 125 (VNB4T)
Description
Vespa 125 (VNB3-VNB6)
Whoever says VNB2T will also say VNB3T. Piaggio did this in 1962 and presented a successor that had not changed under the hood. The changes were mainly cosmetic, so many features of the 150cc models are included. The handlebar head is now no longer divisible and is made of cast aluminium with a receptacle for the small, square speedometer, as known from the previous model. However, the diameter of the headlamp increases to 115 mm. The brake pedal is the same as on the 150, made of highly polished aluminium with a black brake pedal rubber.
The Vespa lettering and caliper are in a dark blue. The rear light is no longer painted but chrome-plated. Instead of the baseboards on the centre tunnel, the mat is now fitted with side trims. The front fender is shaped a little bit different than on the previous model and now has beading on the sides. The leg shield is beaded with an aluminium slotted tube.
With the VNB4T, also introduced in 1962, not so much changes. The proven engine is kept and also the frame changes only in the area of the license plate mounting, here the frame is now square. The scooter is delivered in a light grey (MaxMeyer 1.298.8707). The wheelbase is 2 cm shorter. The rear brake pads are now no longer attached overlapping to one bolt, but have two bolts. The side hoods are now upgraded with trim strips.
1963 the VNB5T is the first engine with a 4-speed transmission. The overall transmission ratio remained the same, but the gearbox was more closely stepped.
With the VNB6T only minor changes are made from 1964. For example, the nuts of the wheel mounting studs were reinforced (from 8 to 10 mm). In addition, the wheel nuts no longer have a welded joint. The tail light is that of the Super. From a technical point of view the compression of the 4-speed engine is increased from 7.2:1 to 7.7:1. This increases the power from 4.6 to 5.12 hp.
Frame numbers VNB4 by year of manufacture:
1962: VNB4T 90396-99700
1963: VNB4T 99701-136485
Original paint VNB4 (MaxMeyer)
| Body: Grigio Chiaro PIA707 (1.298.8707/15243) |
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| Primer: Nocciola (Antiruggine) PIA3000M (3000M) |
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| Mounting parts: Grigio Chiaro PIA707 (1.298.8707/15243) |
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| Flywheel cover: Alluminio PIA983 (1.268.0983) |
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| Vehicle (general) | |
|---|---|
| name: | Vespa 125 (VNB4T) |
| Vehicle sizes | |
| petrol tank capacity: | 7.7 l |
| tank reserve (petrol): | 1.4 l |
| Vehicle wheels | |
| front tyre: | 3.50 - 8 |
| rear tyre: | 3.50 - 8 |
| front wheel rim: | 2.15 - 8 |
| rear wheel rim: | 2.15 - 8 |
| Vehicle brakes | |
| front brake type: | drum brake |
| front brake operation: | mechanical with cable |
| rear brake type: | drum brake |
| rear brake operation: | mechanical with cable |
| Vehicle engine | |
| displacement: | 123.4 cm³ |
| stroke: | 57 mm |
| bore: | 52.5 mm |
| engine type: | 2-stroke |
| type of cooling: | air |
| mixture preparation: | carburettor |
| starter: | kickstarter |
| clutch: | manual |
| engine brand: | Piaggio |
| engine type: | 2-stroke |
| emission standard: | none |
| Vehicle engine - ignition | |
| ignition type: | point set ignition |
| advanced ignition: | 26 |
| points distance: | 0.4 mm |
| power (light): | 30 W |
| voltage: | 6 V |
| Vehicle engine - gearbox | |
| gear change type: | manual |
| no. of gears: | 4 |
| Fahrzeug Betriebsstoffe | |
| fuel: | Super (ROZ 95) |
| mix ratio: | 1:50 |
| gearbox oil: | SAE30 |
| gearbox oil capacity: | 0.25 l |
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