Reproduction of the Vespa PX crankshaft, cleanly and qualitatively executed by Mazzucchelli.
The shafts of the renowned Italian company Mazzucchelli are a very high-quality replacement for the standard crankshaft.
The high-quality processing and the very good bearings protect the shaft from bearing collapse even at maximum speeds. The shaft, as the heart of the engine, is the decisive factor for the reliability of the crankshaft.
|thread rotor side:||M12x1,25 right-hand thread|
|thread drive side:||M12x1,5 right-hand thread|
|diameter crankwebs:||98 mm|
|width crankwebs:||38.9 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:|
|rotary valve crankshaft:|
|length rotary crankweb:||210 mm|
|Vespa PX125-150 - intake timing for long rotary surface (33mm) (°):||153|
|Vespa PX125-150 - intake timing for short rotary surface (53mm fully modified) (°):||176|
|crankcase has to be milled:|
|engine casing has to be modified:|
|length connecting rod:||105 mm|
|thickness connecting rod:||6.3 mm|
|diameter small end connecting rod eye:||19 mm|
|lubricating hole at small end bearing:||no|
|diameter crankpin:||22 mm|
|lubricating hole at crankpin bearing:||notch|