POLINI Highend Racing shaft for direct intake cylinders. The shaft features an extremely high-quality finish. The finish leaves nothing to be desired.
The immense development work of the Polini engineers is not least reflected in the elaborate balancing of the shaft. Resin-filled balancing holes are used next to the crankpin and very heavy tungsten weights on the opposite side. The result is a low-vibration motor run with corresponding performance advantages. Sufficiently dimensioned lubrication slots and racing bearings ensure high reliability. The connecting rod is heavy and solid and CNC finished.
The solid cheek shaft is specially designed for directly sucked cylinders. And the 52.8 mm stroke is due to the Italian racing series. The connecting rod length is now 102 mm instead of 97 mm. The crankcase has to be spindled to house the crank webs inside the case.
For the solid web shaft Polini offers a special bearing and shaft seal kit.
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Anonym  05/03/2016

Excellent product. Very good quality

Ball bearing
Dimensions
15x19x20mm
 
Piston pin
Diameter
15 mm
 
Crankshafts
Stroke
52.8 mm
Thread on alternator side
M12x1,25 Rechtsgewinde
Thread on drive side
M10x1,5 Rechtsgewinde
Crank web diameter
88 mm
Crankcase must be spindled
ja
Motor housing must be modified
ja
Rotary vane crankshaft
nein
Full cheek crankshaft
ja
Filling material for full cheek
Stahl
Material balancing weights
Aluminium
Wide crank webs
37 mm
Bearing seat diameter on alternator side
25 mm
Bearing seat diameter on drive side
17 mm
Diameter of sealing ring seat on alternator side
19 mm
Diameter of sealing ring seat on drive side
25 mm
 
Connecting rod
Connecting rod length
102 mm
Connecting rod strength
5.3 mm
Connecting rod eye top diameter
19 mm
Lifting pin diameter
20 mm
Upper connecting rod eye lubrication hole
ja
Lower connecting rod eye lubrication hole
Schlitz
Connecting rod thrust washers
ja
 
OEM numbers (for comparison purposes only)
Scooter Center:
P2100034
Polini:
210.0034, 2100034, P210.0034, P2100034
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