In a word, NO. A couple of causes, the axle shifted and the rotor was dragging on a pad, or the rotor hub had shifted. The should be equal clearance on both sides of the rotor to the pads. If that’s not it, could you be resting your foot on the brake pedal? And there is a chance that one of the brake pistons got stuck. Let us know what you find.
Please that this problem seriously as you could run out of brakes or the rotor could fail sending chuncks of metal at your fellow karters.
LAD Specialties customer / tony kart / rotax / kt100