Abstract: A swing training apparatus for sensing centrifugal force created from a swing of a handheld sport implement and producing a signal for a predetermined level of centrifugal force. The apparatus comprises a housing holding a battery affixed to a sliding member that is slidably positioned within the housing. An adjustable force signal mechanism is electrically connected to the battery. A spring holds the sliding member and battery in a signal nonactuating position within said housing until sufficient centrifugal force, created by the swinging sport implement, slides the sliding member within the housing into a signal actuating position, thereby actuating said signal mechanism to produce a signal.