Crankshaft MAZZUCCHELLI for SIP
for Vespa 125 VNB/GT/GTR 1°/Super/TS/150 VBA/VBB/T4/GL/Sprint/V 1°/Super 1°
- disc valve
- stroke 57.0mm
- pin 15mm
- cone 20/25mm, M12
- valve timing: 112°/6° post TDC
- modified for PX ignition
Grade AA - first-class repair
Product description
Contact breaker ignitions are usually prone to failure, of limited suitability for tuning and a major risk factor on long rides. Which is why they are often times replaced with electronic ignitions. To do so, fans of the Vespa 125 VNB/GT/GTR//Super/TS/150 VBA/VBB/VGLA/B/GL/Sprint/V/Super had only two options so far: They could either use a qualitatively arguable BAJAJ ignition, or go for the top quality but very expensive VESPATRONIC. Now SIP dealt with the problem at the suggestion of STOFFI’s Garage. The solution is the fusion of two crankshaft types, the base of which forms the classic Sprint crankshaft with its original oil seal and bearing housing. While the disc valve side remains unaltered, MAZZUCCHELLI equips the flywheel side with the revised cone of a modern PX.
This SIP crankshaft allows you to use the proven and low priced electronic ignition of the PX on your vintage Vespa. Oil seals and bearing remain original Sprint. Due to housing tolerances you might encounter minor difficulties when mounting the ignition. To avoid a modification of the stator plate or the damage of the cables, we advise you to use a spacer.
Conclusion: Perfect solution for an easy conversion to electronic ignition
Crankshaft / stroke 57mm / 20/25mm, M12
Conversion crankshaft (to PX ignition) with Ø 95mm crankweb (flywheel side), Ø 97,9mm crankweb (disc valve side), oil seal housing 20mm, bearing housing 25mm, large px cone with M12mm thread, incl. piston rod bearing
SIP-TIP: New keys, flywheel nut M12 and lock washer are a must. Don’t forget to order a stator plate and a flywheel for PX (e.g: SIP Touren, PX200 or HP4). A stator plate spacer (# 50011300) makes sense, too.
Robert Zinnöcker "Zini". STOFFI-SIP Racing Team: "We have been waiting for this for years. Finally a reliable and inexpensive way to convert the old sprint engines to electronic ignition. Perfect."
The timings stated above were determined viewing in the direction of the clutch side. That means: "138°/6° after TDC: Inlet timing begins 6° after TDC and stays open for 138°.
Please note that the angular degrees given here are approximate values, as the crankshafts are reworked by hand.
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Notepad
Get inspired. This product is included in the following public notepads:Notepad name | User | Date | Article | Note | |
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Merkzettel 28.12.2022 | AndreasS8163 | December 28, 2022 | 41 | View notepad | |
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GTR | ChristophL | November 21, 2022 | 25 | View notepad | |
VNL2M | ChristophL | November 21, 2022 | 26 | View notepad | |
gl motor | PhilippS9239 | November 21, 2022 | 40 | View notepad | |
new order fedex 30/09/2022 | bagusd | September 30, 2022 | 245 | View notepad | |
Merkzettel 19.08.2022 | PhilippK5106 | August 20, 2022 | 37 | View notepad | |
Merkzettel 19.08.2022 | PatrickG5360 | August 19, 2022 | 30 | View notepad | |
Merkzettel 16.08.2022 | PhilippK5106 | August 17, 2022 | 25 | View notepad | |
Merkzettel 16.08.2022 | SebastianK3791 | August 16, 2022 | 20 | View notepad | |
Super motor | Mac | October 1, 2022 | 1 | View notepad | |
ORDER 24-05-2022 | RicardoM6489 | May 24, 2022 | 67 | View notepad | |
Moteur GT | VincentC8567 | June 23, 2022 | 41 | View notepad | |
12-05-2022 | RicardoM6489 | May 24, 2022 | 65 | View notepad | |
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Ralf GTR 125 | LudwigM3155 | March 3, 2022 | 32 | View notepad | |
liste Thierry/v2 | ericl8283 | May 10, 2022 | 34 | View notepad | |
menhofer | GionatanD | February 8, 2022 | 10 | View notepad | |
Hubert | MarkusP9860 | March 12, 2022 | 69 | View notepad | |
Mortens Vespa 150 GL VGLB | MortenF | February 13, 2022 | 40 | View notepad | |
Max | MarkusP9860 | March 9, 2022 | 31 | View notepad | |
Markus vnbq | SalvatoreV | January 10, 2022 | 22 | View notepad | |
liste moteur gt | ericl8283 | December 31, 2021 | 20 | View notepad | |
20.12 | LudwigM3155 | December 20, 2021 | 11 | View notepad | |
Sprint 30.11.21 | MarcelH9979 | November 30, 2021 | 81 | View notepad | |
Toni Motor T4 | WernerK | November 24, 2021 | 17 | View notepad | |
VBA1T_Martin Weber | GiuseppeS8170 | November 18, 2021 | 70 | View notepad | |
GT Motor | Carbonara77 | November 7, 2021 | 8 | View notepad | |
Ape and Sprint | EveryDayScooters | November 10, 2021 | 12 | View notepad | |
VBB | RobertoT4763 | October 8, 2021 | 45 | View notepad | |
Hochegger | ALEXP4008 | August 27, 2021 | 69 | View notepad | |
Sprint v | koeno83 | July 30, 2021 | 6 | View notepad | |
OSD Juni 2 | VLCPur | June 14, 2021 | 37 | View notepad | |
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Gt 160 Papa | MarcelH9979 | May 24, 2021 | 19 | View notepad | |
Sprint Motor | GerhardH1272 | May 4, 2021 | 12 | View notepad | |
brauch ich vielleicht noch | JochenW3006 | January 18, 2022 | 35 | View notepad | |
Mario | MarkusP9860 | January 13, 2021 | 25 | View notepad | |
Vespa sprint | OscaroD | February 18, 2021 | 33 | View notepad | |
VGLA | DennisJ2445 | November 18, 2020 | 24 | View notepad | |
kraftroller.com | kraftroller.com | January 24, 2023 | 73 | View notepad |
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Downloads
File name | File type | Description | File size | |
---|---|---|---|---|
Kurbelwelle-1 | Technik Kurbelwelle | 0,72 MB | Download | |
Montage_lager_Kurbelwelle_PX | Montage Lager Kurbelwelle PX | 12,02 MB | Download | |
Crankshaft technology | Crankshaft technology | 5,54 MB | Download | |
Installation crankshaft bearing Vespa PX | Installation crankshaft bearing PX | 0,78 MB | Download | |
Tuning summary largeframe | Tuning summary largeframe | 1,70 MB | Download |