Why does the Till-Ease Model 543 Chisel Plow / Field Cultivator use rigid shanks instead of spring shanks?
Rigid shanks are the key to the successful performance of the Till-Ease Model 543. In order for a tillage tool of this style to penetrate and pull easily the chisel points and sweeps have to maintain a particular angle with the surface of the ground. If this specific angle is changed by as little as 5 degrees the ease of penetration and pulling load quickly changes for the worse. A spring shank is designed for shallow tillage in soft soil conditions. When placed in harder ground conditions a spring shank will drastically change the sweep angle. This in turn makes for very poor ground penetration and very hard pulling.
