This research has been done to design and build a car lift Jack stand using bolts, metric size mm 2 M16 phit stage to learn find out the relationship between the torque twist in the car compared to the height of the stage, Jack. Relationship between tensile strength permanently expanded compared to the height of the stage mothers and the relationship between the mechanical advantage compared to the height of the stage, Jack. Results from the experiment. I found that the torque twist in the variable raised to the height of the stage, Jack with wheel position, torque the maximum torque fly from 41.20 N.m tensile strength value inverse variable length with a permanently expanded the height of the magnetic force during 26-29 cm height and tensile strength to strain or sprain. Start with a constant stage height of 30 cm Jack because of degrees: associate with little value and the maximum tensile strength N/mm2 permanently expanded 65 where Jack starts to touch a point serves to lift the cars and has a mechanical advantage of inverse variable length with a height of Jack with a trend of reduced mechanical advantage. When a high-voltage electromagnetic phase by means of a mechanical advantage is equal to 1.63.
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