electric / default rider 183 cm
Arc Vehicle Vector vs NIU RQi Sport ergonomics
Arc Vehicle Vector and NIU RQi Sport 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
Arc Vehicle Vector
All contacts reached
NIU RQi Sport
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 Arc Vehicle Vector lists a 825 mm seat; the NIU RQi Sport lists 825 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 | Arc Vehicle Vector | NIU RQi Sport |
|---|---|---|
| Seat height | 825 mm | 825 mm |
| Wheelbase | 1,450 mm | 1,455 mm |
| Wet weight | 240 kg | 186 kg |
| Displacement | - | - |
Posture metrics
Knee angle
- Arc Vehicle Vector
- Sport (58.1 deg)
- NIU RQi Sport
- Sport (58.1 deg)
Hip angle
- Arc Vehicle Vector
- Neutral (94.0 deg)
- NIU RQi Sport
- Neutral (93.9 deg)
Elbow angle
- Arc Vehicle Vector
- Relaxed (143.3 deg)
- NIU RQi Sport
- Relaxed (143.3 deg)
Torso lean
- Arc Vehicle Vector
- Neutral (12.0 deg)
- NIU RQi Sport
- Neutral (12.1 deg)