MSI Transaction on Education
Vol 6 No 4 (2025): MSI Transaction on Education

Pemodelan CAD dan Dokumentasi Teknik Sasis Shuttle Bus Listrik Berbasis Reverse Engineering

Balmero Fiskal (Departemen Teknik Otomotif, Fakultas Teknik, Universitas Negeri Padang)
Dwi Sudarno Putra (Departemen Teknik Otomotif, Fakultas Teknik, Universitas Negeri Padang)
M. Yasep Setiawan (Departemen Teknik Otomotif, Fakultas Teknik, Universitas Negeri Padang)
Agus Baharudin (Departemen Teknik Otomotif, Fakultas Teknik, Universitas Negeri Padang)
Dori Yuvenda (Departemen Teknik Mesin, Fakultas Teknik, Universitas Negeri Padang)



Article Info

Publish Date
20 Nov 2025

Abstract

Universitas Negeri Padang (UNP) telah mengoperasikan prototipe mobil listrik shuttle bus untuk mendukung program green campus, namun belum memiliki dokumentasi desain sasis dalam format digital yang komprehensif. Penelitian ini bertujuan menghasilkan dokumentasi Computer-Aided Design (CAD) sasis melalui pendekatan reverse engineering. Penelitian menggunakan metode reverse engineering dengan pengukuran langsung terhadap dimensi sasis, meliputi panjang dan lebar total, lebar batang rangka bagian depan dan tengah-belakang, serta dimensi profil rangka utama dan dudukan lantai, yang dimodelkan menggunakan SolidWorks. Hasil penelitian menunjukkan model CAD memiliki deviasi dimensi maksimal 0% terhadap hasil pengukuran fisik yang menjadi acuan input pemodelan, jauh di bawah ambang batas toleransi ±2%, yang mengindikasikan ketelitian proses transkripsi dimensi ke dalam model CAD. Penelitian ini juga menghasilkan engineering drawing sesuai standar ISO 128 dan ISO 129, serta Bill of Materials (BOM) yang mengidentifikasi 3 jenis profil baja penyusun sasis: besi hollow 4x4, hollow 2x2, dan UNP 8x4. Dokumentasi ini menjadi aset teknis penting bagi pengembangan, perbaikan, dan replikasi sasis kendaraan listrik kampus ke depan. Universitas Negeri Padang (UNP) has operated an electric shuttle bus prototype supporting its green campus program, but lacks comprehensive digital chassis design documentation. This study aims to produce Computer-Aided Design (CAD) chassis documentation through a reverse engineering approach. The research applies a reverse engineering approach with direct measurement of chassis dimensions: overall length and width, frame member width at front and middle-rear sections, and profile dimensions of the main frame and floor-mounting frame, then modeled in SolidWorks. Results show the CAD model has a maximum deviation of 0% from the physical measurements used as modeling input, well below the ±2% tolerance threshold, indicating the accuracy of the dimensional transcription process into the CAD model. The study also produced ISO 128/129-compliant engineering drawings and a Bill of Materials (BOM) identifying three steel profile types: 4x4 hollow, 2x2 hollow, and UNP 8x4 channel steel. This documentation is an important technical asset for future development, repair, and replication of campus electric vehicle chassis.

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Journal Info

Abbrev

mted

Publisher

Subject

Humanities Economics, Econometrics & Finance Education Engineering Social Sciences

Description

MSI Transaction on Education is a Quarterly peer-reviewed and refereed open access journal that publishes articles which contribute new results in all areas of Education. The journal is devoted to the publication of high quality papers on theoretical and practical aspects of Educational research. ...