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Crankshaft -MAZZUCCHELLI Racing (rotary valve) 60mm stroke- Vespa PX125, PX150
Part no.:
1620007
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.
The extended stroke is also a very good instrument for changing the basic design of an engine. In doing so, the engine can be trimmed either in the direction of torque or speed via cylinder head and base gaskets of different thicknesses.
AI-translation
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.
The extended stroke is also a very good instrument for changing the basic design of an engine. In doing so, the engine can be trimmed either in the direction of torque or speed via cylinder head and base gaskets of different thicknesses.
AI-translation
€189.00 *
incl. VAT plus shipping costs
Available immediately (delivery time 1-3 working days*)
P
For this item you get
fidelity point/s
| Bearings | |
|---|---|
| sizes: | 15x19x20mm |
| Gudgeon pins | |
| diameter: | 15 mm |
| Crankshafts | |
| stroke: | 60 mm |
| thread rotor side: | M12x1,25 right-hand thread |
| thread drive side: | M12x1,5 right-hand thread |
| diameter crankwebs: | 98 mm |
| width crankwebs: | 38.6 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: | 193 mm |
| Vespa PX125-150 - intake timing for long rotary surface (33mm) (°): | 172 |
| Vespa PX125-150 - intake timing for short rotary surface (53mm fully modified) (°): | 196 |
| crankcase has to be milled: | |
| engine casing has to be modified: | |
| Connecting rods | |
| length connecting rod: | 105 mm |
| thickness connecting rod: | 5.3 mm |
| diameter small end connecting rod eye: | 19 mm |
| lubricating hole at small end bearing: | no |
| diameter crankpin: | 20 mm |
| lubricating hole at crankpin bearing: | notch |
| crankpin shims: | yes |
| Customers alternatively searched for | |
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