Runaway wheel

You step off. The wheel keeps going. It’s still self-balancing, still powered, and now it’s heading toward traffic, pedestrians, or a wall at whatever speed it decides.

Why it happens

The wheel is calibrated to balance. When you step off, it interprets the sudden weight removal as a lean forward and accelerates to “catch up.” Some wheels are worse than others depending on calibration offset.

How to prevent it

Use a leash during learning. Practice clean dismounts (the wheel should stay upright momentarily, not shoot forward). Learn where your wheel’s kill switch or lift sensor is so you can grab and deactivate.

555 take

A runaway wheel is a liability - it can hit people, cars, or obstacles. This is the #1 argument for using a leash while learning and for mastering dismounts early. Your wheel doesn’t know it’s supposed to stop when you leave.