Unit E22: Central Fill Corn Planter JD 1770 Soucy 1120WU38-2 Tracks + JD 8295 R Tractor Posted on January 21, 2019 (January 21, 2022) by Alex Barrie in Compaction Test Results Datasheets Plot Comments This track unit was much better suited to this application compared to the tires that were tested on Unit E21.From a load carrying and soil compaction, the track system out performed tires for this load.