moped / default rider 183 cm
Yamaha Jupiter Z1 vs Yamaha Vega Force i ergonomics
Yamaha Jupiter Z1 and Yamaha Vega Force i 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
Yamaha Jupiter Z1
All contacts reached
Yamaha Vega Force i
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 Yamaha Jupiter Z1 lists a 765 mm seat; the Yamaha Vega Force i lists 765 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 | Yamaha Jupiter Z1 | Yamaha Vega Force i |
|---|---|---|
| Seat height | 765 mm | 765 mm |
| Wheelbase | 1,240 mm | 1,240 mm |
| Wet weight | 102 kg | 101 kg |
| Displacement | 114 cc | 114 cc |
Posture metrics
Knee angle
- Yamaha Jupiter Z1
- Sport (57.6 deg)
- Yamaha Vega Force i
- Sport (57.6 deg)
Hip angle
- Yamaha Jupiter Z1
- Neutral (98.7 deg)
- Yamaha Vega Force i
- Neutral (98.7 deg)
Elbow angle
- Yamaha Jupiter Z1
- Relaxed (143.3 deg)
- Yamaha Vega Force i
- Relaxed (143.3 deg)
Torso lean
- Yamaha Jupiter Z1
- Neutral (8.9 deg)
- Yamaha Vega Force i
- Neutral (8.9 deg)