moped / default rider 183 cm
Tomos Sprint Sport vs Vespa ET4 50 ergonomics
Tomos Sprint Sport and Vespa ET4 50 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
Tomos Sprint Sport
All contacts reached
Vespa ET4 50
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 Tomos Sprint Sport lists a 780 mm seat; the Vespa ET4 50 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 | Tomos Sprint Sport | Vespa ET4 50 |
|---|---|---|
| Seat height | 780 mm | 780 mm |
| Wheelbase | 1,080 mm | 1,280 mm |
| Wet weight | - | - |
| Displacement | 49 cc | 50 cc |
Posture metrics
Knee angle
- Tomos Sprint Sport
- Sport (57.3 deg)
- Vespa ET4 50
- Sport (57.7 deg)
Hip angle
- Tomos Sprint Sport
- Neutral (102.4 deg)
- Vespa ET4 50
- Neutral (97.7 deg)
Elbow angle
- Tomos Sprint Sport
- Relaxed (143.3 deg)
- Vespa ET4 50
- Relaxed (143.3 deg)
Torso lean
- Tomos Sprint Sport
- Neutral (6.4 deg)
- Vespa ET4 50
- Neutral (9.5 deg)