11
1.5 Body building
General
Body building guidelines
It is important to ensure that the body
is fitted to chassis in such a way that
the load imposed is transmitted
correctly. At the same time the rigidly
mounted body must flex with the
frame. Care should be taken to
ensure that body and chassis are
compatible. An example of bad
selection would be the construction
in which a short body is made on a
long wheel base. In this case, it
becomes necessary to shorten
chassis rear overhang to
accommodate body. As a result
centre of gravity moves forward and
a greater load than that desirable is
imposed on front axle.
It is also essential that careful
consideration be given to movement
or modification of electrical wiring,
electrical equipments, brake
connections, brake piping, extension
of chassis rear over hang, relocation
of chassis components to ensure
good performance in operation.
Post to waist rail joints
Gusset plates are welded to
U-channel / Z-channel waist rail.
The welding of the gusset to the
waist rail should be intermittent.
Wheel arch dimensions
To accommodate wheels, side frame
is formed to a suitable shape called
wheel arch.
To prevent tyre fouling with body on
bad roads, recommended dimensions
of wheel arch should be maintained.
Position of roof luggage carrier
(for LP model)
Roof luggage carrier should be placed
to get the centre of gravity ahead of
rear axle centre line (min . 500 mm).
Height of roof luggage carrier should
be minimum in order to reduce wind
resistance.
Outrigger for door post
When a door has to be located at a
place where cross bearers cannot be
mounted due to positioning of
chassis aggregates at that location,
outrigger assembly should be made
for door post.
