Crankshaft suitable for Sachs 503 2 AL, 2 BL engines with manual transmission.
The limited "Wolfram Edition" is a precise racing crankshaft, developed for racing. By sealing the balancing bores with tungsten, an optimum balancing ratio and very smooth running with minimal vibrations is achieved. The balancing is specially designed for 41 mm cylinders. Solid connecting rod with reinforced 16 mm connecting rod pin and slotted connecting rod foot. Silver conrod bearings with good emergency running properties. Each shaft is precision-balanced to less than 0.02mm. The matching 12/15 x 14.2mm needle bearing is included in the scope of delivery.
Installation tip: First use a 16x1mm spacer washer on each side for clean spacing over the radius at the cheek transition.
Technical data:
The limited "Wolfram Edition" is a precise racing crankshaft, developed for racing. By sealing the balancing bores with tungsten, an optimum balancing ratio and very smooth running with minimal vibrations is achieved. The balancing is specially designed for 41 mm cylinders. Solid connecting rod with reinforced 16 mm connecting rod pin and slotted connecting rod foot. Silver conrod bearings with good emergency running properties. Each shaft is precision-balanced to less than 0.02mm. The matching 12/15 x 14.2mm needle bearing is included in the scope of delivery.
Installation tip: First use a 16x1mm spacer washer on each side for clean spacing over the radius at the cheek transition.
Technical data:
- Crankshaft stroke: 42mm
- Center-to-center rod length: 85mm
- Total length of crankpin on clutch side: 43.1mm
- Total length of crankpin on ignition side: 63.4mm
- Diameter of the crank webs: 85mm
- Thread length: 8mm, 12mm
- Diameter connecting rod eye: 15mm
- Type of thread: MF10x1 (fine thread)
- Piston pin diameter: (B) 12mm
- Diameter bearing seat (clutch side): 15mm
- Diameter bearing seat (ignition side): 15mm
- Dimension needle bearing: 12/15 x 14.2 mm (axe 12)
- Width of crank webs: 30mm
- Length 1st heel: 21mm
- Length 2nd shoulder: 14mm
- Diameter 1st shoulder (clutch side): 15mm
- Diameter 2nd shoulder (clutch side): 12mm
- Length of shoulder (ignition side): 34mm
