TY  - JOUR
PY  - 1985//
TI  - Four-wheel drive tractors--a review
JO  - Journal of agricultural engineering research
A1  - Rackham, D. H.
A1  - Blight, D. P.
SP  - 185
EP  - 201
VL  - 31
IS  - 3
N2  - This paper starts by tracing the history of four-wheel drive tractors up to the 1960s, when they became relatively commonplace. There are several different types of four-wheel drive tractor, the principal differentiating factor being the steering arrangement. These are summarized, together with the principal limitations of each type. There follows a review of work carried out in investigating the improved performance charateristics of four-wheel drive tractors. Consideration is given to the effect of four-wheel drive, and the consequent reduction in slip, on soil compaction. After reviewing the beneficial effect of four-wheel drive on tractor stability, the future role of four-wheel drive in tractor design is discussed. Current sales trends indicate that this role is increasing.<p /> <p>Language: en</p>
LA  - en
SN  - 0021-8634
UR  - http://dx.doi.org/10.1016/0021-8634(85)90087-3
ID  - ref1
ER  -