Simpler spreading
Simpler spreading
ON many fertiliser spreaders, changing from boundary to in-field work can be a time-consuming operation involving disc changes or the re-setting of vane angle or length.
In search of an easier option, KRM has opted for mechanical actuation on its lever-operated Trend system incorporated into its latest KRM DZ, EX and EXW twin disc spreaders.
Key to the system is the design of the disc vanes, which have a longer front than rear aspect and incorporate a gap in their centre.
During normal in-field spreading, the discs rotate toward the centre and the long front face of the Trend vane accelerates the fertiliser past the central gap to produce KRMs standard double double overlap pattern.
For headland spreading, switching the lever reverses the direction of the discs, when fertiliser runs through the centre gap on to the shorter back of the vane, to give a reduced single overlap pattern with limited spread to the headland.
The shape of the back of the left vane gives a longer throw, so, it is claimed, the spread into the field is unaffected; while that of the right vane gives a short throw with a sharp cut off at the boundary.