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Crankshaft SIP PREMIUM for Vespa 150 VBA/VBB 1°/T4/GL 1°
Part no.: 45181100
€195.00
Including VAT Plus shipping
2,1kg / Piece
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Product image for 'Crankshaft SIP PREMIUMTitle' Images may differ from the original
Product image for 'Crankshaft SIP PREMIUMTitle' Images may differ from the original
Product image for 'Crankshaft SIP PREMIUMTitle' Images may differ from the original
Product image for 'Crankshaft SIP PREMIUMTitle' Images may differ from the original
Product image for 'Crankshaft SIP PREMIUMTitle'
Product image for 'Crankshaft SIP PREMIUMTitle'
Product image for 'Crankshaft SIP PREMIUMTitle'
Product image for 'Crankshaft SIP PREMIUMTitle'
Product image for 'Crankshaft SIP PREMIUMTitle'
Product image for 'Crankshaft SIP PREMIUMTitle'

Crankshaft SIP PREMIUM

for Vespa 150 VBA/​VBB 1°/​T4/​GL 1°

Vespa 125 VNB1-5T
  • disc valve
  • stroke 57.0mm
  • conrod 105.0mm
  • pin 15mm
  • valve timing: 118°/​15° post TDC
 
Grade A - perfect repair
€195.00
3 ratings
Including VAT Plus shipping
2,1kg / Piece

Product description

A high end crankshaft for all vintage Vespa models. Highest quality, enabling an ideal restoration including a reliable, smooth-running motor.

 

Together with the cylinder, the crankshaft represents the beating heart of any internal combustion engine. It is amongst the hardest working components and the conversion of the pistons stroke to a rotary movement places the highest demands on both quality and the care taken during construction. The crankshaft should also be well balanced to reduce any unwanted vibrations and the oscillating mass kept to a minimum to support an efficient delivery of the power created by the motor. The big-end bearing rotates at the same rate as the motors RPM, receives lubrication from the petrol/two-stroke oil gas mixture and must withstand two abrupt changes in direction of the piston for each motor revolution. The crank-pin, connecting both crankshaft webs with the con rod, has to be pressed into the webs with a certain clearance to the openings in the webs. If this connection is not strong enough the crankshaft can twist and the crankshaft webs become misaligned and seize. To ensure the big end bearing receives sufficient lubrication the big end of the con rod should be provided with slots to facilitate this.

 

The SIP Crankshafts:

  • Especially fine balancing
  • High quality construction materials
  • High precision manufacture

This all-new range of crankshafts are produced for SIP in Italy and satisfy all of the above listed demands. We have concentrated our efforts to provide the highest quality combined with tried and tested technological features. Each crankshaft is balanced specifically to suit the stroke, con rod length and model of scooter for which it is intended.

The SIP Premium range of crankshafts includes versions suitable for many of the rarer vintage Vespa models. We placed priority on being in a position to offer high quality aftermarket components to replace the originals which are long out of production.

 

Conclusion: An updated and upgraded alternative to the original crankshaft.

 

SIP – TIP: While replacing or servicing the crankshaft always fit a new set of bearings and shaft oil seals. A set of suitable crankshaft de/mounting tools are also advisable (#27338000, #21071000, #18119000)!

OEM numbers (for comparisons): 97916-89270 - 48839 - 1313215 - ( 2/86657 - 89267 - 93742 - 97915 ) (PIAGGIO)

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Ratings

3 ratings (3.7 of 5 stars)

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Most helpful review

Qualität TOP, Abmessungen Flop

Die Qualität überzeugt auf den ersten Blick, doch die Genauigkeit der Abmessungen variert Teils bis zu 1.5MM.

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Notepad

Get inspired. This product is included in the following public notepads:
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November 2020 RogerH5667 November 26, 2020 1 View notepad

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Downloads

File name File type Description File size
Kurbelwelle-1 Technik Kurbelwelle 0,72 MB Download
Crankshaft Crankshaft Measures 0,55 MB Download
Crankshaft technology Crankshaft technology 5,54 MB Download
Tuning summary largeframe Tuning summary largeframe 1,70 MB Download
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