Never throw away the jigs and drawings for an implement that goes out of fashion. That’s the lesson drawn from the re-introduction of a novel cultivator by British manufacturer Bomford Turner, an Alamo Group company.

It’s some years since the Dyna-Drive was last manufactured, having been introduced in the 1980s as a high-speed, low-cost implement for non-plowing primary cultivation and quickly became one of Bomford’s best selling products because of its simplicity, reliability and low…