Some performance characteristics of disc gangs

Abstract The effect of number of discs in a gang on soil reaction forces was evaluated for gangs containing one to five discs. The performance of two different disc shapes was investigated, each at two operating angles. The angles and shapes were chosen to represent a wide range of operating parameters. Interaction was found to occur between discs; however, the interaction was not a function of the number of discs. The magnitude of the interaction was such that large errors would occur if gang draught force was calculated from single disc data only.