Crankshaft swiing High End for Puch X30, Velux, Z50 55077

Full cheek crankshaft with reinforced connecting rod and 12 mm piston pin suitable for Puch X30 Velux, Puch 2-speed MS, MV, MV50 manual mopeds, with Z50 engines.

This high-quality, precision-fit crankshaft was designed for use in engines with a large power increase and has proven itself in various load tests. To achieve maximum pre-compression, all balancing bores in the cheeks have been sealed with aluminum inserts. The crankshaft has a polished connecting rod and connecting rod bearings in the form of silver bearings, which offer excellent emergency running properties. The crankshaft is precision-balanced to less than 0.02 mm, which ensures maximum performance and smooth running.

Dimensions of the crankshaft:

• Total length of the clutch-side crankpin: 58mm
• Total length of ignition-side crankpin: 67mm
• Length 1st shoulder (clutch side): 20.3mm
• Length 2nd shoulder (clutch side) 19mm
• Diameter 1st shoulder (coupling side): 17mm
• Diameter 2nd shoulder (clutch side): 15mm
• Thread (on the coupling side): MF10x1mm
• Length of shoulder (ignition side): 26.3mm
• Diameter shoulder (ignition side): 17mm
• Thread (ignition side): MF10x1mm
• Diameter of crank webs: 70mm
• Width of crank webs: 34mm
• Diameter of connecting rod eye at top: 15mm
• Diameter of connecting rod pin at the bottom: 16mm
• Connecting rod length (center-to-center): 90 mm
• Stroke: 43 mm
• Weight (incl. connecting rod): 954 grams
• Dimension needle bearing: Ø 12 / 15 x 14.2 mm (axe 12)

Notes:
The crankshaft is not suitable for Puch X30 Sport NS / NL mopeds.
If the clutch basket jams or blocks during assembly, a thinner thrust washer (Ø22/15/...) must be fitted.