Adjusting the belt stress on an electrical skateboard (e-skate) is essential for optimum efficiency and security. A correctly tensioned belt ensures clean energy switch from the motor to the wheels, stopping slippage and maximizing effectivity.
Free belts could cause the e-skate to lose energy and even slip off the pulleys, probably resulting in accidents. Overly tight belts, however, can put extreme pressure on the motor and bearings, decreasing their lifespan and growing the chance of injury.