Crankshaft FABBRI RACING 'Mower' for diaphragm controlled engines Vespa Smallframe PV, ET3, PK.
A shaft of excellent quality, mass produced to reduce costs while maintaining excellent characteristics. Entirely made in Italy in the Fabbri Racing workshop.
Ideal for engines where the traditional rotary slide intake is milled away and an intake manifold with diaphragm control is used. Also suitable for all cylinders that have a diaphragm control in the cylinder.
51mm stroke
97mm connecting rod
Bearing type 6204 on both sides
Oil seal clutch side 27x47x6mm
87mm cheeks (crankcase must be spindled)
40-45% balance factor (depending on piston)