How a Vespa Engine Works

This is not complete. I forgot to mention how the clutch works or talk about the drive gears that link the crankshaft to the layshaft.

Category:

Autos & Vehicles

Tags:

• Vespa
• Engine

[sambking]

What year and model is this Vespa engine? I have a 2007 LX 150. Thanks for the help!

[iowancamera]

@sambking This is a 1964 VNB engine, meaning a 4 speed 125cc engine that was used in Allstate scooters and Vespa 125 scooters. It looks nothing like your LX150 engine which is 4 stroke and uses a variator CVT transmission. Two completely different animals, but both are great scooters when they are running right. My wife has a 2006 LX150.

[karthikneo12]

Hi, thanks for the video!! can you please help me with the following.

what should be the air screw setting on the vespa 150 ?? why is their a humming noise on my vespa after rebuilding the engine ??? The rear brake is not sharp, i changed the brake shoes and the brake drum / just installed them with out sanding the drum or the shoes.

[iowancamera]

@karthikneo12 The humming noise? Could due to vibration from the crankshaft being out of true? Or 100 other things. Did you measure and shim the gear stack so there wasn't any play in the cases? It could be clutch noise. There are too many things to make a good guess without being there in person to hear and feel the bike running. To make the brakes seat in better, scuff the drum with 150 grit sand paper or something. It should grab better after that.

[miguelmpn]

From wich vespa is this motor?

[iowancamera]

@miguelmpn This is a 1964 VNB engine. 4 speed, 125cc from the factory.

[cotoiful]

sooo cool dude thenks

[summerman2]

great video. Makes it look simple. Very encouraging.

[motonetasiam]

Existe algo mas simple que el motor de la Vespa?? :)

[karthikneo12]

Thank you so much , but as you mentioned there could be many factors, only when you visually inspect will you arrive at the problem !!