lateral stability to spiked links 14 when the weight of a log 12 is holding the spiked links 14 firmly in the guide tracks 18b 34 micarta 34 wear strips 14g prevent excessive wear to the guide surfaces 14c and the guide tracks 18b without additional stabilizing means log wobbling and tipping still may occur whenever external forces momentarily unseat spiked links 14 from guide tracks 18b guide block 24 as stated earlier is rigidly attached to the spiked link 14 with screws 24b further guide surfaces 24d are dimensioned to slide within the lateral bounds of cavity 18d with very little clearance or play between the guide walls 18a this construction virtually prevents lateral motion of the spiked links 14 by providing a rigid longitudinal path of travel for the lower portion of spiked link 14 the planar parallel feature of the guide walls 18a and the guide surfaces 24d affords a rotational stability as well stated another way should spiked link 14 be bounced or otherwise lifted such that the 34 micarta 34 wear strips 14g are spaced apart from guide tracks 18b guide block 24 will continue to maintain a rigid vertical posture of the spiked link 14 by resisting any tendency of the spiked link guide block assembly to tilt from the vertical plane as defined by the guide walls 18a due to the tremendous forces that may be exerted on guide block 24 in log transporting operations the guide block 24 is constructed with a metal insert 24a against which screws 24b hold also since the spiked link 14 may develop some lateral wobble prior to.