Detail Cantuman

This final report was written about modification of hand-tractor and ergonomic
analysis of steering assy. The background of these activities was the change of engine specification that will sit on top of the frame and the cost for Indonesian market is relatively high.
In first, the report will give a brief about hand-tractor. In addition, introduction
about ergonomic knowledge can be found along with explanation decision-making
tools that to be used to select among of available concepts. The method is known as
Pugh charts.
Two developed frame design are presented. First design, frame 01 , was made
up from JIS C-section steels measured 75 x 40 x 5. Second design, frame 02, was
manufactured from 1" steel circular tube. Both materials were chosen because it is
ease to find it in the market. Particularly the JIS C-section steels can be used after
several simple processes. The selection went to frame 01 after evaluation design had
been done. In fact, almost in all of criterion frame 01 was superior to frame 02.
From simple analysis using anthropometry data, to achieve ergonomic steer
design, the handgrip height should be 102.70 mm from ground. Refer to references,
distance between handgrip have to be measured 620 mm and the handgrip diameter
not less than 35 mm. This design modification is to decreased operator effort,
increased comfort, and better operator and consumer acceptance.