Then I learn (by my-self) how to weld and we made the Troncotinette, a kind of go-ped!
This is a crazy project!! We started from scratch and we build everything, the frame, the brakes, the clutch...
The cluch is very simple: The roller is directly on the engine shaft, ant the chainsaw is on an armature that put it on the tyre or a little above it. It is commanded by a pedal near the front wheel.
The brake is very similar to the clasical go-ped brakes: it is a piece of old plane tyre, witch can be put on the tyre with a pedal, at the rear of the central board.
The engine is a no-name chainsaw, 33cc, ~1HP and it goes very fast!