Disclosed are a method and an apparatus for creating a frame of an orthogonal frequency division multiplexing specification using a frequency domain spreading. The metallic overlay may be a weld, a metallic coating, or similar application. The driven engine is considered the second part of this two-part system. The wedges are joined by a bridge portion with each wedge including a ramped surface that engages and applies a radial force on the eccentric to prevent relative movement between the inner and outer rotary members.