In 1988, two Caterpillar 518 rubber-tired cable skidders and a Caterpillar D4H Custom skidder were monitored over a four-month period while working in a Coastal British Columbia second-growth stand. Productivity, costs, and profitability were determined. Shift-level analysis showed skidding costs of $2.46 and $2.93/m3 for the two rubber-tired skidders and $4.02/m3 for the D4H Custom skidder. Analysis of detailed timing data showed that skidding distance had the greatest influence on skidding cycle time. Marginal economic analysis showed that all Douglas-fir and balsam J-grade logs were skidded at a profit, while X-grade and lower-grade Douglas-fir logs and Y-grade balsam logs were skidded at a loss. Turn volume and market value had the greatest impacts on skidding.
FRDA Research Report 101 (1428 KB)
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Updated July 24, 2015