This research is to design and build a prototype hack corn up to 3 cm and not more than 1 cm in size, using a 2-horsepower motors 1400 RPM in order to find the efficiency of the corn, which is beginning to hack design dimensions (length × width × high) × 85 × 87 59 centimeters by 2 sizes are from high-horsepower motor to the tassel lay next to the blade to cut the corn from the beginning of the experiment found that early corn can hack hack machine, corn stem size trees with diameter less than 3 cm. By doing experiments is the 2-step 1 determine the time and find the weight after the hack will not exceed corn size 3 cm and not more than 1 cm in size, it is found that the time it takes corn early 1 minute hack can hack after hack size corn beginning not more than 3 cm mass average. Size is 4.0 kg and not exceeding 1 cm after the hack average is 2.6 kg mass and has 2 assign weight to find the weight before the hack after hack after hack will be the size of not more than 3 cm and corn beginning size does not exceed 1 cm. weight found to hack hack tool after beginning with a digit from a corn chopper not exceeding 3 cm in average is 9.6 kg mass, and have the size from the main switch must not exceed 1 cm. average is 9.5 kg mass.
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