Racing crankshaft for Simonini racing engine gearbox for your Piaggio Ciao, Si, Bravo and Boxer moped / moped.
This full cheek racing crankshaft from Mazzucchelli is one of the best crankshafts currently available on the market.
The perfect workmanship and the use of high-quality materials guarantee reliable running at speeds of up to 16,000 rpm.
The solid connecting rod with a 12 mm piston pin is also designed for the highest loads.
Attention: This crankshaft can only be used in conjunction with the Simonini Racing engine case. It is also only suitable for special conversions, as the stroke is 44 mm. The original Simonini crankshaft for use in the Simonini housing has a stroke of 46 mm.
Connecting rod eye (A): 15.0 mm
Ø bearing seat right (B): 15.0 mm
Ø bearing seat rear (C): 15.0 mm
Stroke (2xD): 44.0 mm
Sleeve length (E): 87.0 mm
Width of crank webs (F): 32.9 mm
Outer diameter of crank webs: 74.0 mm
1st shoulder (G): 21.0 mm
2nd shoulder (H): 44.0 mm. Heel (H): 44.0 mm
3. Heel (I): 63.5 mm
Total length crankpin end (J): 90.0 mm
Ø Vario / clutch pin (H): 12.0 mm
Dimension needle bearing: Ø 12 / 15 x 14.7 mm (axe 12)
Thread: M8 x 1.25 mm
No shim needs to be inserted between the racing crankshaft and its main bearings for installation.
Quality product from the Italian manufacturer Mazzucchelli.
| Manufacturer | Mazzucchelli |
| Thread type | MF8x1 (fine pitch thread) |
| Cheek type | Full cheeks |
| Crankshaft stroke | 44 mm |
| Ø coupling pin / vario pin | 12 mm |
| Connecting rod length center-center | 87 mm |
| Total length crankpin ignition side | 90 mm |
| Ø piston pin (B) | 12 mm |
| Ø Connecting rod eye | 15 mm |
| Area of application | Racing |
| Ø Bearing seat (clutch side) | 15 mm |
| Ø Bearing seat (ignition side) | 15 mm |
| Dimension needle bearing | 12 / 15 x 14.7 mm (axe 12) |
| Wide crank webs | 32.9 mm |
| Length 1st paragraph | 21 mm |
| Length 2nd paragraph | 44 mm |
| Length 3rd paragraph | 63.5 mm |
| Number of gears | 1 pcs |
| Piaggio | Ciao - P, SC, PX, C24 Si Bravo / Super Bravo Boxer Grillo |
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