moped / default rider 183 cm
Vespa ET4 50 vs Yamaha FreeGo ergonomics
Vespa ET4 50 and Yamaha FreeGo have modeled posture scores within three points for the 183 cm default rider. Treat this as a planning estimate; posture preference, data confidence, and a real test sit still matter.
Modeled fit comparison
Vespa ET4 50
All contacts reached
Yamaha FreeGo
All contacts reached
The modeled scores are within three points, so the result does not distinguish a higher-scoring bike. Treat the result as a planning estimate and compare each bike's geometry confidence before a real test sit.
Rider fit: reaching the ground
The Vespa ET4 50 lists a 780 mm seat; the Yamaha FreeGo lists 780 mm, within a few millimetres of each other. Seat height is only a first-pass ground-reach input. It does not establish safety or actual foot contact. Seat width, suspension sag, boots, mobility, load, and individual proportions can materially change the result.
Geometry snapshot
| Spec | Vespa ET4 50 | Yamaha FreeGo |
|---|---|---|
| Seat height | 780 mm | 780 mm |
| Wheelbase | 1,280 mm | 1,275 mm |
| Wet weight | - | 102 kg |
| Displacement | 50 cc | 125 cc |
Posture metrics
Knee angle
- Vespa ET4 50
- Sport (57.7 deg)
- Yamaha FreeGo
- Sport (57.7 deg)
Hip angle
- Vespa ET4 50
- Neutral (97.7 deg)
- Yamaha FreeGo
- Neutral (98.0 deg)
Elbow angle
- Vespa ET4 50
- Relaxed (143.3 deg)
- Yamaha FreeGo
- Relaxed (143.3 deg)
Torso lean
- Vespa ET4 50
- Neutral (9.5 deg)
- Yamaha FreeGo
- Neutral (9.4 deg)