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Rider Height
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moped / default rider 183 cm

Yamaha LB 70 Chappy vs Yamaha QT50 Yamahopper ergonomics

Yamaha LB 70 Chappy 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

Yamaha LB 70 Chappy

95Comfortable

All contacts reached

Yamaha QT50 Yamahopper

95Comfortable

All contacts reached

The two bikes are close enough that posture preference matters more than the overall score.

Geometry snapshot

Geometry comparison for Yamaha LB 70 Chappy and Yamaha QT50 Yamahopper
SpecYamaha LB 70 ChappyYamaha QT50 Yamahopper
Seat height710 mm695 mm
Wheelbase1,050 mm1,050 mm
Wet weight--
Displacement65 cc49 cc

Posture metrics

Knee angle

Yamaha LB 70 Chappy
Sport (57.3 deg)
Yamaha QT50 Yamahopper
Sport (57.3 deg)

Hip angle

Yamaha LB 70 Chappy
Neutral (103.1 deg)
Yamaha QT50 Yamahopper
Neutral (103.1 deg)

Elbow angle

Yamaha LB 70 Chappy
Relaxed (143.3 deg)
Yamaha QT50 Yamahopper
Relaxed (143.3 deg)

Torso lean

Yamaha LB 70 Chappy
Neutral (5.9 deg)
Yamaha QT50 Yamahopper
Neutral (5.9 deg)