I'm going through my father's JD 100 chisel plow to try some chiseling this fall. It currently has spike points on it. The spacing between shanks is 14-1/4" (out from 12" - I moved everything to compensate for 2 broken shanks). Am considering putting 3" or 4" twisted points. What has been your experience? Which will turn more dirt and/or go deep? Thanks! |