Loose steering, wheel, or unsteady ride
Check head tube, stem, and axle for correct torque. Tighten/adjust as per assembly instructions. True wheel if needed.
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Spokes break or become loose, especially in rear wheel, impacting safety and performance.
Inspect wheel for broken/loose spokes, check tension evenly. Re-tension or replace affected spokes. If breaks recur, consider full wheel replacement.D50 ST50 Loose Headset
If you notice play in the headset of D50/ST50, follow the instructions below. Solution 1: Loosen the stem bolts slightly, then tighten the top cap bolt until there is no play, but ensure that the handlebars can still turn smoothly without binding. If ...Motor runs when rear wheel is off ground but stops with rider weight
Points to loose/bad connection or motor/controller issue. Check all electrical connections (battery, controller, motor leads). If unresolved, contact support; may indicate controller/motor upgrade needed.Wheel is no longer true, causes wobble
Have wheel trued at bike shop, keep receipts/photos if persistent for warranty action.Sudden power loss, sometimes mid-ride
Inspect main battery connection/lock. Check if battery “pops out” or connector is dirty/loose. Reseat battery; if shuts off repeatedly, contact support for controller/battery replacement.