Racing Crankshaft MAZZUCCHELLI
for Vespa 50/N/L/R/S/Special/SR/SS/PK50/S
- disc valve
- stroke 43.0mm
- conrod 87.0mm
- Standard - con rod
- cone 19/20mm, M10
TUNING ROAD - for everyday use
For race use only. Not admitted in the area of the German StVZO!
Racing crankshafts are a simple and effective tuning step for every disc valve engine. A racing crankshaft enables higher numbers of revs. The engine becomes more lively and agile. The high quality racing crankshafts from Italian company MAZZUCCHELLI convince thanks to their minimum production tolerances and limited bearing clearance. This guarantees high rev endurance and an exceptionally high product lifespan.
In contrast to the original crankshaft, a racing crankshaft has a clearly extended inlet time. This means the charge level is increased. The crank webs are flow-optimised and polished. Turbulence and flow separations are thereby reduced. A polished connecting rod and a lower connecting rod bearing as a silver bearing satisfy the highest aspirations. All crankshafts are supplied with upper connecting rod bearings.
Those who want to convert to electronic ignition should go for the 20/20mm racing crankshaft. In combination with a racing cylinder, the thicker and therefore more stable cone is recommended. The ETS crankshaft should be installed on high revving engines which are equipped with high performance cylinders or very light flywheels. This omits the risk of the crankshaft stump from being torn away. A set of conversion bearings and the corresponding oil seal are then required in the V50/PV/ET3/PK engine casings.
A strengthened connecting rod is fitted to the RACE version. Additional lubrication holes in the upper (on the 125 series only) and lubrication slots in the lower connecting rod eyelet lead to additional stability and allow higher numbers of revs due to the superior lubrication.
Conclusion: not only a good idea in combination with a tuning cylinder. A boost in performance can also be achieved with an original cylinder. MAZZUCCHELLI stands for long product lifetime and durability.
SIP community user '„NOSw11', Italy:
"Excellent! As I had previously installed a crankshaft with bronze bushing, due to the tuning I wanted to have a crankshaft with needle bearings under all circumstances. I therefore chose Mazzucchelli as I can be sure that their products are produced with the highest level of care and the price is right."
Racing crankshaft / stroke 43mm / connecting rod 87mm / 19/20mm, M10
Racing crankshaft with Ø 82mm crankweb (flywheel side), Ø 87mm crankweb (disc valve side), 87mm connecting rod, oil seal housing 19mm, bearing housing 20mm, pointed cone with M10mm thread, incl. connecting rod bearing
SIP-TIP: New bearings, oil seals and keys are a must. Same goes for sealing kit, clutch-, and flywheel nuts. It also makes sense to use the crankshaft tools # 27338000, # 21071000 and # 18119000. Ideal for POLINI, MALOSSI, DR and PINASCO racing cylinders with rotary valve.
|Pk50s tuning kit||RaduC||November 29, 2022||10||View notepad|
|Stef - best SBa 16.11.22||timeworker||November 16, 2022||19||View notepad|
|Stef - MaPö - no ned!||timeworker||November 20, 2022||44||View notepad|
|Stef-specia/V50 Motorrevision||timeworker||November 8, 2022||22||View notepad|
|vespa pk 50 martin||GiovanniG4441||November 5, 2022||16||View notepad|
|102 Polini mit Rennauspuff und Vergaser & Revision||Luigi_SIP||November 3, 2022||15||View notepad|
|Kevin||louishansenc||November 1, 2022||9||View notepad|
|Sebi v50||27Dirk||September 30, 2022||23||View notepad|
|V 50 R BJ 74 Jonas||NorbertP8768||October 1, 2022||34||View notepad|
|V50 - 125ccm||StefanH6010||August 10, 2022||3||View notepad|
|części zapasowe||mhgbzbph||October 20, 2022||27||View notepad|
|50 Special||OliverK6085||May 25, 2022||39||View notepad|
|Revision 2022 V50||DirkT||April 26, 2022||6||View notepad|
|Vespa 50 N||MichaelG1250||August 20, 2022||54||View notepad|
|Nadine Motor||MarcelH9979||March 13, 2022||67||View notepad|
|Vespi||NiklasH8342||March 10, 2022||7||View notepad|
|Pk Motor - V50||MarcL||March 3, 2022||3||View notepad|
|Kurzhuber V50||AlexW1556||August 30, 2022||6||View notepad|
|10-02-2022||RicardoM6489||February 22, 2022||51||View notepad|
|08-12-2021||RicardoM6489||December 16, 2021||18||View notepad|
|Merkzettel 19.11.2021||GregorR9441||November 19, 2021||16||View notepad|
|Flo neu||FabianW2842||November 12, 2021||45||View notepad|
|Karl - Motor||RaphaelK1272||November 8, 2021||19||View notepad|
|V50/90 1. Serie Motorrevision||ThomasM5203||June 7, 2022||44||View notepad|
|Motor komplett 50n/Special ohne Zündung||Luigi_SIP||October 11, 2021||82||ohne Zündung, vergleichbar wie original||View notepad|
|Jan/kim v50||marcmandt||June 28, 2022||30||View notepad|
|Vespa Bestellung||HansM9336||September 30, 2021||6||View notepad|
|22-09-2021||RicardoM6489||September 24, 2021||13||View notepad|
|Emma v50||RaphaelK1272||September 26, 2021||19||View notepad|
|Motor-Revision||PatrickS6773||March 14, 2022||17||View notepad|
|50Special||ANDREASG||August 4, 2021||18||View notepad|
|peças finais||LuisCarlosL6549||July 2, 2021||8||View notepad|
|V50 Ali||AxelN8312||June 23, 2021||14||View notepad|
|Harry PK50S||tevini||September 10, 2022||9||View notepad|
|102 ccm projekt||JochbergerAndi||May 15, 2021||10||View notepad|
|Kurbelwelle||PatricA||April 22, 2021||1||View notepad|
|102ccm||Florianv5241||April 14, 2021||36||View notepad|
|Mario||vericon||December 1, 2021||27||View notepad|
|Fabio||EmanuelP||May 30, 2021||33||View notepad|
|Haberl Stefan V50||beefryker||March 18, 2021||34||View notepad|
|Polini 102||Luigi_SIP||March 9, 2021||11||View notepad|
|Speciale50||ChristianD6242||April 13, 2022||59||View notepad|
|Special 3||DanielG5689||September 21, 2021||79||View notepad|
|Max||ChristophS4889||January 3, 2021||16||View notepad|
|v50||ThorstenL2602||December 26, 2021||27||View notepad|
|Stage 2||FrancescoM4621||October 12, 2020||2||View notepad|