Solid-flange crankshaft for Puch E50 engines installed in Puch Maxi S / N mopeds.
The crankshaft is made of forged steel, which makes it tougher and more durable than standard crankshafts.
To ensure perfect balancing and pre-compression of the crankshaft, the balancing holes are sealed with tungsten plugs.
The connecting rod eye has a diameter of 17 mm. This allows for the use of different needle bearings when a 12, 13, or 14 mm piston pin is used.
The racing crankshaft has a stroke of 44 mm. This is 1 mm longer than the original. A 0.5 mm spacer should be used.
Total length of the clutch-side journal: 75 mm
Total length of the ignition-side journal: 67 mm
Ø 1st step (clutch side): 22 mm
Ø 2nd step (clutch side): 17 mm
Ø 3rd step (clutch side): 15 mm
Ø step (ignition side): 17 mm
Ø crankshaft journals: 70 mm
Width of crankshaft journals: 34 mm
Ø connecting rod eye: 17 mm
Connecting rod length: 90 mm
Stroke: 44 mm
Note: The needle bearing is not included. It must be ordered separately.
Additionally, the housing must be cut out in the middle so that the reinforced connecting rod does not rub against the housing. You can find instructions from the manufacturer via the download link.
For the crankshaft, the bearing set for the older model with a 12 mm wide inner bearing ring can be used.
A quality product from the SRT brand.
| Manufacturer | SRT |
| Cheek type | Full cheeks |
| Crankshaft stroke | 44 mm |
| Connecting rod length center-center | 90 mm |
| Total length of crankpin on clutch side | 75 mm |
| Total length crankpin ignition side | 67 mm |
| Ø crank webs | 70 mm |
| Ø Connecting rod eye | 17 mm |
| Ø piston pin (B) | 12 mm, 13 mm, 14 mm |
| Ø Bearing seat (clutch side) | 17 mm |
| Ø Bearing seat (ignition side) | 17 mm |
| Area of application | Racing |
| Wide crank webs | 34 mm |
| Puch | E50 |
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Rito Crankshaft Racing | Puch E50
Manufacturer: Rito · Weight: 970 g · Material: Steel · Cheek type: Full cheeks · Crankshaft stroke: 43 mm · Thread type: MF10x1 (fine pitch thread) · Connecting rod length center-center: 90 mm · Total length of crankpin on clutch side: 74 mm · Total length crankpin ignition side: 67 mm · Ø crank webs: 69.9 mm · Ø Connecting rod eye: 15 mm · Ø piston pin (B): 12 mm · Ø Bearing seat (clutch side): 17 mm · Ø Bearing seat (ignition side): 17 mm · Thread length: 11 mm · Dimension needle bearing: 12 / 15 x 15 mm (axe 12) · Thread length: 14 mm · Wide crank webs: 34 mm · Length 1st paragraph: 9 mm · Length 2nd paragraph: 14.5 mm · Length 3rd paragraph: 25 mm · Area of application: Racing · Area of application: Tuning · Ø 1st step (on the coupling side): 22 mm · Ø 2nd shoulder (on the clutch side): 17 mm · Ø 3rd step (on the clutch side): 15 mm · Length of shoulder (ignition side): 26.3 mm · Number of gears: 1 pcs
CHF 152.90
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