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All Journal IJIMCE : International Journal of Innovation in Mechanical Construction and Energy
Koto, Muhammad Zam Zami
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Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Optimization of a Two-Stroke Gasoline Grass Cutter into a Rice Harvesting Machine Koto, Muhammad Zam Zami; Armila; Jana Hafiza
IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Vol. 2 No. 3 (2025): IJIMCE : International Journal of Innovation in Mechanical Construction and Ene
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ijimce.v2i3.74

Abstract

In Indonesia, rice harvesting in rural areas is still largely done manually, resulting in low efficiency and high labor demands. This study aims to provide a practical solution by optimizing a two-stroke gasoline-powered grass cutter into a functional rice harvester. The research was conducted through stages including literature study, problem identification, design, fabrication, and performance testing. Mechanical analysis shows that the modified machine produces 47.7 N·mm³ torque and a cutting speed of 40.05 m/min, adequate for cutting rice stalks without stalling. Fuel tests revealed Pertamax offers better combustion efficiency than Pertalite. The balancing system improves operator comfort, while field trials showed a reduction in harvesting time by over 55% and labor costs by 50%. These results indicate that the optimized machine is effective, low-cost, and suitable for smallholder farmers.
Co-Authors Armila Jana Hafiza