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RHD Series RHD
230/250/280
14
achieved
– this can be accomplished by the utilisation of ‘ballast’ in order to
counter-balance the additional equipment added.
Front weights may be required for rear mounted machines to place 15% of
total outfit weight on the front axle for stable transport on the road and to
reduce ‘crabbing’ due to the drag of the cutting unit when working on the
ground.
Where a machine works to the side of the tractor rear weights may be
required to maintain a reasonable amount of rear axle load on the opposing
wheel.
All factors must be addressed in order to match the type and nature of the
equipment added to the circumstances under which it will be used - factors
that effect stability are:
•
Centre of gravity of the tractor/machine combination.
•
Geometric conditions, e.g. position of the cutting head and ballast.
•
Weight, track width and wheelbase of the tractor.
•
Acceleration, braking, turning and the relative position of the cutting unit
during these operations.
•
Ground conditions, e.g. slope, grip, load capability of the soil/surface.
•
Rigidity of implement mounting.
Suggestions to increase stability:
•
Increasing rear wheel track -
a vehicle with a wider wheel track is more
stable.
•
Ballasting the wheel; it is preferable to use external weights but liquid can
be added to around 75% of the tyre volume
– water with anti-freeze or the
heavier Calcium Chloride alternative can be used.
•
Addition of weights
– care should be taken in selecting the location of the
weights to ensure they are added to a position that offers the greatest
advantage.
•
Front axle locking, check with tractor manufacturer.
The advice above is offered as a guide for stability only and is not a guide to vehicle
strength. It is therefore recommended that you consult your vehicle manufacturer or
local dealer to obtain specific advice on this subject, additionally advice should be
sought from a tyre specialist with regard to tyre pressures and ratings suitable for the
type and nature of the machine you intend to fit.