Description

Crankshaft 

-MAZZUCCHELLI Racing-

 (rotary valve) 57mm stroke- 

Vespa PX200

Description

In order to achieve higher speeds, one should reach for the racing shaft. The extended intake timing results in a much freer engine revs. This measure is especially noticeable with high-revving cylinders.

The quality of the crankshafts is very good and so they resist even the highest revs. Especially for engines with a larger displacement, they are an optimal supplement to extend the usable speed range.

These engines turn out freely, which leads to a significant increase in top speed.

Bearings

sizes: 16x20x20mm

Gudgeon pins

diameter: 16 mm

Crankshafts

stroke: 57 mm

thread rotor side: M12x1,25 right-hand thread

thread drive side: M12x1,5 right-hand thread

diameter crankwebs: 98 mm

width crankwebs: 40.4 mm

diameter bearing seat rotor side: 25 mm

diameter bearing seat drive side: 25 mm

diameter oil seal seat rotor side: 24 mm

diameter oil seal seat drive side: 31 mm

full circle crankshaft: no

rotary valve crankshaft: yes

length rotary crankweb: 194 mm

Vespa PX200 - intake timing for short rotary surface (46mm) (°): 186

Vespa PX200 - intake timing for long rotary surface (62mm fully modified) (°): 205

crankcase has to be milled: no

engine casing has to be modified: no

Connecting rods

length connecting rod: 110 mm

thickness connecting rod: 5.3 mm

diameter small end connecting rod eye: 20 mm

lubricating hole at small end bearing: no

diameter crankpin: 22 mm

lubricating hole at crankpin bearing: notch

crankpin shims: yes

 Fits the following vehicles

Vespa (Piaggio) Vespa 200 Rally (VSE1T, Ducati)

Vespa (Piaggio) Cosa 200 CL (VSR1T)

Vespa (Piaggio) Cosa 200 CLX (VSR1T300)

Vespa (Piaggio) Cosa 200 FL (VSR1T301)

Vespa (Piaggio) P 200 E (VSX1T, -1980)

Vespa (Piaggio) PX 200 E FL (VSX1T, 1984-1997)

Vespa (Piaggio) PX 200 E (VSX1T, 1981-1983)

Vespa (Piaggio) PX 200 E FL (ZAPM18, 1998-)