How Auto-Grab™ works:  The driven front suspension is a leading link type.  It has the advantage of low weight and lower unsprung weight which improves traction.  It is stiff horizontally which allows the use of one light weight spring shock unit and allows for 8 inches of shock travel.    It consists of a swing arm pivoted at the bottom of the front fork.  A dual idler sprocket rotating at this pivot point receives the drive chain from the front drive miter box.  A second chain on this dual idler sprocket drives the front wheel.  Both chain drives thereby have constant sprocket center distances.