High-end racing crankshaft suitable for Puch Maxi S / N, as well as Supermaxi LG1 mopeds with a 1-speed E50 engine.
This special crankshaft has 1 mm more stroke, the additional stroke gives your engine more torque and compression and thus tickles the last horsepower out of the cylinder.
High-quality and precisely fitting, 975 gram full cheek crankshaft, which has proven itself in various load tests. This was designed for use in engines with a large increase in 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. In addition, the connecting rod bearings are silver bearings, which have excellent emergency running properties.
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 will 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 among the accessories.
- 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: 66 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 heel (coupling side): 17 mm
- Ø 3rd heel (clutch side): 15 mm
- Thread (coupling side): MF10x1 mm
- Length of shoulder (on coupling side): 26.3 mm
- Ø shoulder (on the coupling side): 17 mm
- Thread (on end face): MF10x1 mm
- Ø crank webs: 69.9 mm
- Width of crank webs: 34 mm
- Ø connecting rod eye top: 15 mm
- Ø connecting rod pin bottom: 16 mm
- Conrod length (center-center): 90 mm
- Stroke: 44 mm (+1 mm compared to original shaft)
- Weight (incl. connecting rod): 970 grams
- Lift: 44 mm (+1 mm compared to original shaft) . Connecting rod): 970 grams
- Dimension needle bearing: Ø 12 / 15 x 14.2 mm (axe 12)
The needle bearing is included in the scope of delivery.
You can find the matching bearings and oil seals in the accessories section.
&p>Revised version of the previously offered crankshaft with improved balancing ratio and thus better speed stability.
Exclusive product for the highest demands of the quality brand swiing®.
Suitable for the following models
| Puch | E50 |
Accessories & related products
Moped fans like you also bought:
GPO gasket set | Puch E50
Manufacturer: GPO · Material: Aluminum · Material: Fiber · Material: Sealing carton · Material: Sealing paper · Number of components: 7 pcs · Hole spacing inlet: 32 - 38 mm · Ø outlet inside: 19.9 mm · Hole spacing outlet: 42 mm · Hole pattern [mm]: 44 x 44 · Decompressor: Yes · Area of application: Standard
CHF 9.90
Not in stock
Motorex Automatic Motor Oil (ATF) 450 ml
Manufacturer: Motorex · Area of application: Gearbox lubrication with clutch · Oil type: ATF Dextron 3 (DEXIII) · Contents [ml]: 450 ml · Gearbox type: Automatic machine · Temperature resistance (min.): -45 - 200 °C · Pony spare part no.: A2080 · Sachs spare part no.: 0263 014 002
CHF 9.90
CHF 22.00/l
swiing® revival screw set engine galvanized | Puch Maxi
Manufacturer: swiing® revival parts · Material: Steel · Surface: blue galvanized · Drive: Cross recess · Drive: Hexagon socket · Screw head: Countersunk head · Screw head: Cylinder head · Screw head: Lens head · Puch spare part no.: 900.1216 · Puch spare part no.: 901.1308
CHF 9.90
swiing® ingenious Set Crankshaft High End (+1 mm stroke) (Version 2.0) | Puch E50
Cheek type: Full cheeks · Area of application: High End · Thread type: MF10x1 (fine pitch thread) · Manufacturer: swiing® ingenious parts · Number of gears: 1 pcs · Dimension needle bearing: 12 / 15 x 14.2 mm (axe 12) · 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 · Wide crank webs: 34 mm · Crankshaft stroke: 44 mm · Total length crankpin ignition side: 66 mm · Ø crank webs: 69.9 mm · Total length of crankpin on clutch side: 74 mm · Connecting rod length center-center: 90 mm · Weight: 970 g
CHF 189.90
Collection only possible with online purchase and appointment.
