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Crankshaft -MAZZUCCHELLI RACING (reed valve intake) 60mm stroke, full circle web- Vespa PX200
Part no.:
1620012
Description
The solid cheek shafts were primarily developed to improve the pre-compression ratio and thus increase the cylinder charge above the increased pressure in the crankcase. However, the installation of the full cheek shaft greatly reduces the effective cross-section of the intake manifold. As a result, the possible degree of filling in the upper speed range drops considerably, and engines equipped with such a crankshaft usually have a sharp drop in output at 7,000 rpm.
The stroke lengthened by 3mm allows experimentation with timing and provides that little bit of extra displacement. Depending on whether the 3mm is fully compensated with foot or head seals, the motor can be designed for more torque or speed.
AI-translation
The stroke lengthened by 3mm allows experimentation with timing and provides that little bit of extra displacement. Depending on whether the 3mm is fully compensated with foot or head seals, the motor can be designed for more torque or speed.
AI-translation
€261.00 *
incl. VAT plus shipping costs
Available immediately (delivery time 1-3 working days*)
P
For this item you get
fidelity point/s
| Bearings | |
|---|---|
| sizes: | 16x20x20mm |
| Gudgeon pins | |
| diameter: | 16 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: | 40 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: | |
| filling material for full circle: | steel |
| material balancing weights: | Pertinax |
| rotary valve crankshaft: | |
| crankcase has to be milled: | |
| engine casing has to be modified: | |
| Connecting rods | |
| length connecting rod: | 110 mm |
| thickness connecting rod: | 5.7 mm |
| diameter small end connecting rod eye: | 20 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 | |
|---|---|
| Kurbelwelle | Krukas | Vilebrequin | Cigüeñal | Albero | Crankshaft | Crank | Albero Motore | De círculo completo | | |
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