Crankshaft -MAZZUCCHELLI Standard (rotary valve)- Vespa V50, PK50 S (Ø=19mm cone)

Preview: Crankshaft -MAZZUCCHELLI Standard (rotary valve)- Vespa V50, PK50 S (Ø=19mm cone)

Description

The standard crankshafts for the V50 are very well suited to replace the old original shafts, with bushings instead of needle bearings in the upper connecting rod eye. This brings a strongly increased life span of the engine with itself, since the connecting rod bushings become frequently unround, and/or deflect with the time.

TIP:

For cylinders starting from 75cc capacity directly a broader upper connecting rod bearing also order! (see "Accessories")

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€107.94 *

incl. VAT plus shipping costs

Available immediately (delivery time 1-3 working days*)

P For this item you get fidelity point/s

Bearings
sizes:	12x17x13mm
Gudgeon pins
diameter:	12 mm
Crankshafts
stroke:	43 mm
thread rotor side:	M10x1,5 right-hand thread
thread drive side:	M10x1,5 right-hand thread
diameter crankwebs:	87 mm
width crankwebs:	37.6 mm
diameter bearing seat rotor side:	20 mm
diameter bearing seat drive side:	17 mm
diameter oil seal seat rotor side:	19 mm
diameter oil seal seat drive side:	22.7 mm
full circle crankshaft:
rotary valve crankshaft:
length rotary crankweb:	201 mm
Vespa V50, PV - intake timing for short rotary surface (22mm) (°):	117
Vespa PK XL2, ETS - intake timing for long rotary surface (28mm) (°):	123
Vespa PK XL2, ETS - intake timing for long rotary surface (37mm fully modified) (°):	133
crankcase has to be milled:
engine casing has to be modified:
Connecting rods
length connecting rod:	97 mm
thickness connecting rod:	4.8 mm
diameter small end connecting rod eye:	17 mm
lubricating hole at small end bearing:	yes
diameter crankpin:	20 mm
lubricating hole at crankpin bearing:	notch
crankpin shims:	yes
OEM numbers (for comparison purposes only)
Piaggio	224587, 2245875, 1961056, 90203, 112154

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