Overall view of drive mechanism . A 3.5" split vee pulley is mounted on the saw mandrel which drives an 8" pulley attached to a 1 to 1 right angle gear box (an old reel driver from a Massey-Harris combine). A 14 tooth sprocket (all # 50 roller chain) is connected to 36 tooth sprocket which drives the drag chain via a 18 tooth sprocket (from an old John Deere wheat drill)
A closeup of the vee belt and right angle gear box.
