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GENERAL SPECIFICATIONS
D
AILY 4X4
Base - May 2007 Print 603.93.761
Dimensions and masses
Height of the centre of gravity
The height of the centre of gravity of the chassis cab is given in the technical documentation specific to each model (chassis
drawing).
For testing the vehicle complete with superstructure, the bodybuilder must check that the height of the centre of gravity of the
equipment including the payload, or of the entire vehicle when fully loaded, falls within the maximum permitted values.
These limits are defined in compliance with the national or international regulations (e.g. as amended by the current EC braking
Directive) or requested by t he Manufacturer to ensure good handling of the vehicle (e.g. transverse stability of the moving vehicle).
Figure 1.4
Verification with full load:
102454
Ht =
Wc . Hc + Wb . Hb
Wc + Wb
Hb =
(Wc + Wb) . Ht − Wc . Hc
Wb
Wc = Chassis cab vehicle kerb weight
Hc = Height of centre of gravity of chassis cab vehicle (laden condition)
Wb = Body and payload
Hb = Height of centre of gravity of body and payload in relation to ground
Wt = Vehicle weight when fully loaded
Ht = Height of centre of gravity of vehicle with full load
To check the vehicle with its body but no payload, use the above formula but for Ws use only the vehicle unladen weight (The
position for Hv will depend on the load and deflection of the suspension).
The height of the centre of gravity indicated in Table 2.6 represents values which are not to be exceeded for each given equipment
level. These values have been c alc ulated only in terms of the transverse stability of the vehicle and are applicable to a mid wheelbase.
Any oth er possible restrictive specific ation, e.g. braking regulation, shoul d be taken int o consideration.
The values given in Table 2.6 refer to the body with fixed payload. In versions where the payload tends to move sideways (e.g.
suspended loads, fluid loads etc.) especially when turning, higher dynamic transverse forces is generated w hich makes the vehicle
less stable. This must be taken into consideration when providing vehicle operating instructions or for possible reduction in the
height of the centre of gravity.
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