Moped and Scooter Crankshafts
From Moped Wiki
The following is a growing table of general crankshaft dimensions to be used as a starting point for crankshaft swaps between engines.
"AM" signifies an aftermarket version is available, but never came OEM in an engine.
"-" signifies info to be added
| Engine | Stroke | ConRod Length | Pin Size | Lobe ⌀ | Lobe Width | Bearing ID | Seal ID |
|---|---|---|---|---|---|---|---|
| PA50 | 39.6mm | 80mm | 10mm/12mm AM | 70mm | 41mm | 20mm | 15mm/17mm |
| E50 | 43mm/44mm AM | 90mm | 12mm | 70mm | 34mm | 17mm | 17mm/22mm |
| Pug 103 | 39.1mm | 77.5mm | 12mm | 69mm nice | 36.6mm | 17mm/20mm | 16mm/20mm |
| Moby AV7/AV10 | 41.6 | 86mm | 13mm | 69mm | 38.5mm | 16mm | 15/16? |
| Minarelli V1 | 39mm/42mm | - | 12mm | - | - | 17mm | 17mm |
| Morini M1/M01 | 39mm | 77mm | 12mm | - | - | 17mm | 17mm |
| Solex | - | 91mm | 12mm | - | - | 15mm/17mm | 21mm |
| Vespa Moped | 43mm | 86mm | 10mm/12mm | 70mm | 33mm | 15mm | 15mm |
| Sachs 505 | A,B,C 43mm/D 44mm | 83mm | 12mm | 79mm | 34.5mm | 15mm | 15mm |
| Sachs 504 | - | - | 12mm | - | - | 15mm | 15mm |
| Derbi PP/PR | 43mm | - | 12mm | 77mm | 41.35mm | 17mm | 17mm |
| Derbi FR | 40mm | - | 12mm | - | - | 17mm/20mm | 17mm |
| Derbi Start V | - | - | - | - | - | 20mm | - |
