Optimized and lightened full cheek racing crankshaft suitable for Puch Maxi S / N, as well as Supermaxi LG1 mopeds / mopeds with a 1-speed E50 engine.
This special crankshaft has 1 mm more stroke and gives your engine more torque and compression to tease the last power reserves out of the cylinder.The precisely fitting 939 gram full cheek crankshaft has proven itself in our latest test series and delivered uncompromising power.
All balancing holes in the cheeks have been sealed with aluminum inserts for maximum pre-compression. The solid connecting rod is fitted with a more stable 16 mm connecting rod bolt and is also sealed with an aluminum insert. In addition, the polished connecting rod ensures optimum flow behavior of the air-fuel mixture and the additional lubrication slots guarantee clean running even at high engine speeds.
The lightened cheeks on the inside ensure even better balancing and smooth running.
The following points should be noted when using this crankshaft:
- The use of a 0.5 mm thick stroke plate is essential to compensate for the additional stroke. You can find suitable models in the accessories section. We also recommend using sealant between the gasket and housing/cylinder. You can also find a suitable sealant in the accessories section.
- When installing, observe the crushing edge dimension (distance piston - cylinder head at TDC). This should not be less than 1 mm.
- Due to the longer stroke, the pressure in the crankcase increases. For this reason, the oil seal on the crankshaft end should either be glued in with 2-component adhesive or secured with the retaining plate in the accessory.
- Running in the crankshaft: Run the engine for 30 minutes under low load with a slightly richer mixture.
- When using 45 mm cylinder kits, depending on the model, pre-compressed air may enter the intake port through the holes in the piston.
Dimensions of the crankshaft:
Total length of clutch-side crankpin: 74 mm
Total length of clutch-side crankpin: 67 mm
Length 1. Heel (clutch side): 9 mm
Length 2nd heel (clutch side) 14.5 mm
Length 3rd heel (clutch side) 25 mm
Ø 1st heel (clutch side): 22 mm
Ø 2nd shoulder (clutch side): 17 mm
Ø 3rd shoulder (clutch side): 15 mm
Thread (coupling side): MF10x1 mm
Length of shoulder (on coupling side): 26.3 mm
Ø shoulder (on coupling side): 17 mm
Thread (on end face): MF10x1 mm
Ø crank webs: 69.9 mm
Width crank webs: 34 mm
Ø connecting rod eye top: 15 mm
Ø connecting rod pin bottom: 16 mm
Conrod length (center-to-center): 90 mm
Stroke: 44 mm
Weight (incl. Connecting rod): 939 grams
Needle bearing dimension: Ø 12 / 15 x 15 mm (axe 12)
The needle bearing is included in the scope of delivery.
The matching bearings and oil seals can be found under accessories.
Alternative to Puch spare part number: 349.1.10.015.0
Quality product from the Portuguese manufacturer Rito.
Details
| Thread type | MF10x1 (fine pitch thread) |
| Manufacturer | Rito |
| Weight | 939 g |
| Material | Steel, Aluminum |
| Cheek type | Full cheeks |
| Crankshaft stroke | 44 mm |
| Ø piston pin (B) | 12 mm |
| Connecting rod length center-center | 90 mm |
| Total length of crankpin on clutch side | 74 mm |
| Number of gears | 1 pcs |
| Total length crankpin ignition side | 67 mm |
| Ø crank webs | 69.9 mm |
| Thread length | 10.5 mm, 12.5 mm |
| Area of application | High End |
| Ø Connecting rod eye | 16 mm |
| Ø Bearing seat (clutch side) | 17 mm |
| Ø Bearing seat (ignition side) | 17 mm |
| Dimension needle bearing | 12 / 15 x 15 mm (axe 12) |
| Wide crank webs | 34 mm |
| Length 1st paragraph | 9 mm |
| Length 2nd paragraph | 14.5 mm |
| Length 3rd paragraph | 25 mm |
| 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 |
| Puch spare part no. | 349.1.10.015.0 |
| Alternative version of the Puch spare part no. | 349.1.10.015.0 |
Suitable for the following models
| Puch | E50 |
Accessories & related products
swiing® ingenious crankshaft High End (+1 mm stroke) (Version 2.0) | Puch E50
Manufacturer: swiing® ingenious parts · Material: Aluminum · Material: Steel · Cheek type: Full cheeks · Crankshaft stroke: 44 mm · Connecting rod length center-center: 90 mm · Total length of crankpin on clutch side: 74 mm · Total length crankpin ignition side: 66 mm · Ø crank webs: 69.9 mm · Ø piston pin (B): 12 mm · Ø Connecting rod eye: 15 mm · Ø Bearing seat (clutch side): 17 mm · Ø Bearing seat (ignition side): 17 mm · Thread type: MF10x1 (fine pitch thread) · Thread length: 11 mm · Thread length: 15 mm · Dimension needle bearing: 12 / 15 x 14.2 mm (axe 12) · Wide crank webs: 34 mm · Length 1st paragraph: 9 mm · Length 2nd paragraph: 14.5 mm · Length 3rd paragraph: 25 mm · 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 · Weight: 970 g · Number of gears: 1 pcs · Area of application: High End
CHF 148.90
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Collection only possible with online purchase and appointment.
