Great Plains P14889 Serial No 18007975 - Manual (Page 21)

21 Simba SL
Operating Instructions
The SIMBA SL is an amalgamation of time
proven, successful Simba designed
components brought together to form this
important development. The SL has been
designed and produced in conjunction with
the Simba ECOtillage
™
system to provide a
one pass mix with a fissured layer at disc
depth for through drainage and root access
to lower horizons. This enables rapid
drainage and access after rain, creating a
greater effective capacity for moisture
compared to ploughing for the same effective
total depth of cultivation.
In principle, the machine is an offset disc with
Terra-Grip tines, designed for low draft, high
speed operations. The addition of a rear
mounted roll enables effective cultivation in
one pass. The leading set of disc blades
cultivate the top horizon, minimising clod
formation and reducing tine loadings and
blockage. This starts the ‘top down’
cultivation process, retaining weathered tilth
in the surface level for stale seedbed
purposes. The front row of discs is then
followed by tines or a second row of discs
depending upon the machine configuration.
The tines work to shatter at depth retaining
the surface intact to leave an ECOtillage
™
stale seedbed. This eliminates the problem
of ‘wet years’ in non-plough based terms. The
key to the SL’s success are the tines which
maintain shatter across the full width of
cultivation. The rear roll then consolidates the
surface, cracks any clods and firms the soil
profile after the rear gang completes mixing
to depth. The corrugated top and shattered
lower horizons are left fully weatherproof to
any conditions between cultivation and drilling
whilst retaining moisture below the surface for
rapid straw breakdown and optimum
establishment of the next crop.
4. Adjustment / Operation