Great Plains SL600 Operator Manual - Manual (Page 23)

23 Simba SL
603-215M-ENG
2012-12-21
The Great Plains Simba SL is an
amalgamation of time proven, successful
Great Plains designed components brought
together to form this important development.
The Simba SL provides 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 Spring Reset 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. The tines work to
shatter at depth retaining the surface intact
to leave a stale seedbed. This eliminates
the problem of ‘wet years’ in non-plough
based terms. The key to the Simba 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