VC4000 Manual
68
VC
4000
Setu
p
Figure 25: Vehicle axes
The VC4000 is affected slightly by the tilt of the car caused by
suspension shifts under acceleration or deceleration. This effect is
slight and for the purposes of the VC4000 is considered to be similar
for all vehicles designed to be driven on the highways including
motorcycles, passenger cars, semi tractor trailers and most off road
vehicles. The VC4000 is set at a common pitch and roll factor (factor
1) for all vehicles with useful suspension systems.
The VC4000 is shipped with Pitch factor and Roll factor of 1, which is
an adjustment of 0.9700. The Pitch and Roll adjustment can be
finely adjusted using G adjust.
For rail cars, vehicles with abnormal or no suspension system and
marine application the following guide will help you decide which
pitch and roll factor to use:
Pitch and roll factor 0: Low Pitch and roll factor, for vehicles with no
suspension system such as transit rail cars,
fork lifts or farm tractors. Also for testing on
very low friction surfaces such as ice.
Pitch and roll factor 1: Normal Pitch and roll factor or default Pitch
and roll factor, for all highway vehicles with
useful suspension systems. Includes
motorcycles, passenger cars, semi tractor-
trailers and most off road vehicles.
Pitch and roll factor 2: High Pitch and roll factor, for very short
wheel
based
vehicles
with
a
long
suspension travel.
