moped / default rider 183 cm
Yamaha FS1-E vs Yamaha MR50 ergonomics
Yamaha FS1-E and Yamaha MR50 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 FS1-E
All contacts reached
Yamaha MR50
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 FS1-E lists a 740 mm seat; the Yamaha MR50 lists 740 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 FS1-E | Yamaha MR50 |
|---|---|---|
| Seat height | 740 mm | 740 mm |
| Wheelbase | 1,160 mm | 1,180 mm |
| Wet weight | - | 77 kg |
| Displacement | 49 cc | 49 cc |
Posture metrics
Knee angle
- Yamaha FS1-E
- Sport (57.5 deg)
- Yamaha MR50
- Sport (57.5 deg)
Hip angle
- Yamaha FS1-E
- Neutral (100.4 deg)
- Yamaha MR50
- Neutral (100.0 deg)
Elbow angle
- Yamaha FS1-E
- Relaxed (143.3 deg)
- Yamaha MR50
- Relaxed (143.3 deg)
Torso lean
- Yamaha FS1-E
- Neutral (7.7 deg)
- Yamaha MR50
- Neutral (8.0 deg)