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Silva Fennica 1926-1997
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Acta Forestalia Fennica
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Articles by Gustav Sirén

Category : Article

article id 4675, category Article
Gustav Sirén. (1958). Kokemuksia raivaussahan käytöstä metsänhoitotöissä. Silva Fennica no. 93 article id 4675. https://doi.org/10.14214/sf.a9121
English title: Experiences of brush cutters in silviculture.
Original keywords: metsänhoito; koneellistuminen; raivaussahat; työvälineet; taimikonhoito; hakkuualan raivaus
English keywords: mechanization; cleaning of sapling stand; brush cutter; clearing saw; hand tools; clearing of cutting area
Abstract | View details | Full text in PDF | Author Info

The aim of the study was to compare the newly introduced brush cutter to ordinary hand tools in clearing of cutting areas and thinning young birch (Betula sp.) and Scots pine (Pinus Sylvestris L.) stands. Working with a prototype of the brush cutter, Brushmaster, reduced the total working time by 15-20% compared to bush knife and axe, in spite of the cutter’s weight. At rainy weather the advantage of Brushmaster dissapeared because of clogging of the cutter’s air filter. The prototype proved to be more effective when clearing a cutting area, and hand tools seemed to be faster if damage to the remaining trees have to be avoided.

In addition, eight either lighter or more effective motor saws or brush cutters were compared mutually, and the effect of motor effect, weight, handiness, arrangement of suspenders and handles is discussed. With these improved types of the cutter it was possible to shorten the total working time in thinning of stands (mostly clearing of young stands) to 30-40% of the total working time compared to hand tools. The most modern saws appeared to be best adapted in clearing cutting areas.

The article includes an abstract in English.

  • Sirén, E-mail: gs@mm.unknown (email)

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