Continuous longitudinal flow root crop harvesting

A harvester for root crops such as beets is provided which preferably provides continuous flow of root crops from a header, along a transfer assembly, through a processing run, and to an elevator assembly. The harvester can be configured to include or accommodate interchangeable header assemblies having different numbers of rows and/or row spacings. The transfer assembly can be of a floating type and helps to provide an even distribution of beets to the grabrollers. The processing run includes full-length cleaning grabrollers disposed parallel to the direction of travel. Modular elevator assemblies can be provided to further enhance harvester versatility. Such an approach includes interchangeable ferris wheel and scrubber chain elevator assemblies. An improved scrubber chain elevator assembly can be used which has a wraparound scrubber chain design. A pivoting tank conveyor for evenly filling a holding tank can be included. Large diameter carrier wheels on a single axle positioned for improved balance, flotation, and maneuverability typically are important basic characteristics of the harvesters.