For: Sachs

30798

Rito crankshaft "MONSTER PLUS" 43 mm | Sachs 503, 50, 50/3 (12 mm KoBo)

245,60 EUR

Incl. VAT, plus shipping costs

in stock

The item is in stock. Delivery time 2–4 workdays

High-end crankshaft with 1 mm additional stroke developed by a Swiss high-end tuning forge and built by the best manufacturer to fit Sachs 503, 50 (without blower) and 50/3 engines.
The shaft can also be used in the 50/2 (also known as 502) engine with minor adjustments.

High-quality and precisely fitting, 1026 gram full cheek crankshaft with polished connecting rod, which has proven itself in various load tests. Designed for use in engines with a large power increase and tested up to 19,000 rpm.
The high-end crankshaft is designed for Sachs 503 engines and has the correct length of the clutch-side cheek pin, which is 3.5 mm longer than that of the Sachs 50/2 crankshafts currently in circulation.
The large balancing bores in the cheeks were sealed with aluminum inserts for maximum pre-compression.

Dimensions of the crankshaft:

  • Total length of clutch-side crankpin: 43.3 mm
  • Total length of clutch-side crankpin: 63.5 mm
  • Length of 1st shoulder (clutch-side): 21.3 mm
  • Length 2nd shoulder (clutch side) 14.2 mm
  • Ø 1st shoulder (clutch side): 15 mm
  • Ø 2nd heel (clutch side): 12 mm
  • Thread (coupling side): MF10x1 mm
  • Length of shoulder (on coupling side): 34.6 mm
  • Ø shoulder (on the coupling side): 15 mm
  • Thread (on end face): MF10x1 mm
  • Ø crank webs: 84.8 mm
  • Width of crank webs: 29.8 mm
  • Ø connecting rod eye top: 16 mm
  • Ø connecting rod pin bottom: 16 mm
  • Conrod length (center-to-center): 85 mm
  • Stroke: 43 mm (+1 compared to original shaft)
  • Weight (incl. Connecting rod): 1026 grams
  • Dimension needle bearing: Ø 12 / 16 x 15.7 mm (axe 12)

The needle bearing is included in the scope of delivery.

The matching bearings and oil seals can be found under accessories.

Installation tip: 

  • The transition between the crank webs and the journals is provided with a slight radius for reinforcement. To ensure clean spacing, a Ø 16 x 1 mm spacer washer should be used on both the left and right-hand sides; these are placed neatly over the chamfer and are therefore perfectly centered. The other spacers can be used normally with Ø 15 mm.
  • The crushing edge should be checked in all cases and adjusted with cylinder base gaskets of different thicknesses if necessary.

Quality product from Portuguese manufacturer Rito.

Details

ManufacturerRito
MaterialSteel, Aluminum
Cheek typeFull cheeks
Crankshaft stroke43 mm
Thread typeMF10x1 (fine pitch thread)
Area of applicationTuning, Racing
Connecting rod length center-center85 mm
Total length of crankpin on clutch side43.3 mm
Total length crankpin ignition side63.5 mm
Ø crank webs84.8 mm
Ø piston pin (B)12 mm
Thread length8 mm, 11 mm
Ø Connecting rod eye16 mm
Ø Bearing seat (clutch side)15 mm
Ø Bearing seat (ignition side)15 mm
Dimension needle bearing12 / 16 x 15.7 mm (axe 12)
Wide crank webs29.8 mm
Length 1st paragraph21.3 mm
Length 2nd paragraph14.2 mm
Ø 1st step (on the coupling side)15 mm
Ø 2nd shoulder (on the clutch side)12 mm
Length of shoulder (ignition side)34.6 mm
Weight1026 g

Suitable for the following models

Sachs

50 (Fahrtwind, 1.25 / 1.5 PS, DE)

50/2 - L CH (0.8 PS), ML CH (0.8 PS), MB (2.6 PS), MLB (2.6 PS)

50/3

503 - 2AL / 2BL

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