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Sisu R-141
Sisu R-series is a 2–3-axle lorry model series made by the Finnish heavy vehicle producer Suomen Autoteollisuus (SAT) in 1970–1982. The series consists of 4×2-driven R-141 and R-148, 6×2-driven R-142, 6×4-driven R-143 and R-149, 4×4-driven R-144, 4×4+2-driven R-145 and 6×6-driven R-146. Typical applications are logging trucks, dumper trucks and long-distance transportation haulers which pull conventional and semi-trailers.
The predecessors of the series were Sisu K-141...148. R-series was replaced by the 1982 introduced Sisu SR-series.
== Development ==
The R-series belongs to the producer's heavy duty ''Jyry'' range and it is based on the preceding models. Similar to the previous range, the R-type is equipped with a tiltable, single piece bonnet made from reinforced plastic as standard. Use of plastic is further increased in various cabin parts.〔Blomberg: ''Hyttituotantoa tyyppi kerrallaan.'' pp. 174–185.〕
Previously, Sisu tandems were equipped with an in-house developed mechanism that lifted the rearmost axle. The solution was not very reliable and it had led to a number of warranty claims. The main domestic competitor Vanajan Autotehdas had developed an outstanding lifting tandem mechanism. SAT took over the producer when the designing work of R-series was ongoing, and adopted the mechanism to Sisus.〔Blomberg: ''Vesa Palmu: Sisulla ja sydämellä!'' pp. 256–262.〕 The Vanaja type lifting tandem used in R-142 6×2 variant was the most significant new feature in the R-series.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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