moped / default rider 183 cm
Suzuki Birdie 50 vs Yamaha QT50 Yamahopper ergonomics
Suzuki Birdie 50 and Yamaha QT50 Yamahopper land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
Suzuki Birdie 50
All contacts reached
Yamaha QT50 Yamahopper
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Rider fit: reaching the ground
The Suzuki Birdie 50 has a 705 mm seat; the Yamaha QT50 Yamahopper sits at 695 mm — a 10 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 71 cm for the Suzuki Birdie 50 and 70 cm for the Yamaha QT50 Yamahopper.
That makes the Yamaha QT50 Yamahopper the easier reach to the ground — the safer pick for shorter riders or anyone who wants both feet planted at a stop — while the Suzuki Birdie 50 gives taller riders more legroom and a more open knee bend. Load your own height and inseam into the simulator to see exactly how each one fits you.
Geometry snapshot
| Spec | Suzuki Birdie 50 | Yamaha QT50 Yamahopper |
|---|---|---|
| Seat height | 705 mm | 695 mm |
| Wheelbase | 1,150 mm | 1,050 mm |
| Wet weight | - | - |
| Displacement | 49 cc | 49 cc |
Posture metrics
Knee angle
- Suzuki Birdie 50
- Sport (57.4 deg)
- Yamaha QT50 Yamahopper
- Sport (57.3 deg)
Hip angle
- Suzuki Birdie 50
- Neutral (100.7 deg)
- Yamaha QT50 Yamahopper
- Neutral (103.1 deg)
Elbow angle
- Suzuki Birdie 50
- Relaxed (143.3 deg)
- Yamaha QT50 Yamahopper
- Relaxed (143.3 deg)
Torso lean
- Suzuki Birdie 50
- Neutral (7.5 deg)
- Yamaha QT50 Yamahopper
- Neutral (5.9 deg)