Funny how in fs they go so slow with these. Yet this is light work when clearing off a cereal crop. And this newer styled disc are more of a speed disc. 12-16 mph is common with them. Ridgid disc are the light discing type. The solid disc are your heavy disc which are a 7-9 mph disc for angled cleat folding work. Then you have the chisel plow for depending on how deep you want to rip in and subsoil.