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All Journal Jurnal Pendidikan Teknik Mesin Undiksha
Nyoman Arya Wigraha
Pendidikan Teknik Mesin, Universitas Pendidikan Ganesha, Bali
Automotive Engineering Education Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Analisis Pengaruh Berat Loler Sliding Terhadap Torsi, Daya Dan Kosumsi Bahan Bakar Pada Motor Metic CVT: Sliding Roller Weight Variations on Torque, Power, and Consumption of CVT Motorcycles Kadek Ari Setiawan; Ni Made Novia Kusumayani; Nyoman Arya Wigraha
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.102514

Abstract

This study aims to analyze the effect of sliding roller weight variations on torque, power output, and fuel consumption in automatic motorcycles equipped with a CVT (Continuously Variable Transmission) system. The research object is a 2013 Honda Vario 110cc FI motorcycle. The rollers used include a standard cylindrical roller weighing 13 grams, and sliding rollers with weights of 10 grams, 12 grams, and 15 grams, respectively. The research method employed is experimental, with data collected through dynotest measurements for torque and power, as well as fuel consumption testing within an engine speed range of 3000 – 7000 rpm, with data recorded at five specific points: 3000 rpm, 4000 rpm, 5000 rpm, 6000 rpm, and 7000 rpm. The results indicate that variations in sliding roller weight affect engine torque and power. In general, all sliding roller variations tested produced higher torque and power compared to the standard roller. Torque testing revealed that increasing the weight of the sliding roller tends to enhance torque at lower engine speeds. The 15-gram sliding roller produced the highest average torque of 20.28 N.m at 3000 rpm, while the 10-gram and 12-gram rollers produced average torque values of 19.82 N.m and 19.81 N.m, respectively. Power testing showed that lighter sliding rollers tend to generate greater power at medium engine speeds. The 10-gram roller yielded the highest average power output of 9.08 HP at 5000 rpm, followed by the 12-gram (8.94 HP) and 15-gram (7.96 HP) rollers. Meanwhile, fuel consumption testing showed that all roller variations exhibited nearly identical consumption patterns at each engine speed, with an average difference of less than 0.015%. Keywords: CVT, sliding roller, torque, power output, fuel consumption, automatic motorcycle
Artikel Analisis Kesiapan Guru Teknik dan Bisnis Sepeda Motor dalam Integrasi Artificial Intelligence: Analisis Kesiapan Guru Teknik dan Bisnis Sepeda Motor dalam Integrasi Artificial Intelligence Kadek Suta Mertaya; Edi Elisa; Nyoman Arya Wigraha
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.117030

Abstract

The development of Artificial Intelligence (AI) technology in the era of the Industrial Revolution 4.0 has encouraged the transformation of learning practices, particularly in vocational education. This study aimed to analyze the readiness of Motorcycle Engineering and Business teachers to integrate AI into the learning process. A descriptive qualitative approach was employed, with data collected through interviews, observations, and documentation. The research subjects consisted of Motorcycle Engineering and Business teachers at SMKN 1 Gerokgak and SMKN 3 Singaraja. Data were analyzed through data reduction, data display, and conclusion drawing. The findings revealed that teachers’ understanding of AI tended to be at the multistructural level of the SOLO Taxonomy, while some teachers had begun to demonstrate relational characteristics. Teachers’ skills in utilizing AI were generally at the manipulation level of Dave’s Psychomotor Taxonomy, with several teachers reaching the precision level. Teachers’ attitudes and perceptions toward AI integration showed a positive tendency and were categorized at the valuing stage of Krathwohl’s Affective Taxonomy. Supporting factors for AI integration included institutional support, training opportunities, adequate facilities and infrastructure, and teachers’ adaptability. Meanwhile, inhibiting factors included disparities in digital competence, limited training access, paid AI features, prompt formulation skills, and challenges in monitoring students’ use of AI. These findings indicate that teachers’ readiness to integrate AI into learning is relatively good; however, further competency development and institutional support are needed to optimize AI implementation in vocational education.
Pengaruh Jenis Filter Udara Terhadap Torsi, Daya, dan Konsumsi Bahan Bakar: The Effect of Air Filter Type on Torque, Power, and Fuel Consumption Putu Agus Hendrawan; Nyoman Arya Wigraha; Gede Wiratmaja; Edi Elisa
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.119417

Abstract

This study aims to analyze the effect of variations in air filter materials on torque, power, and fuel consumption in a Honda Beat 110 cc fuel-injected motorcycle. The air filter materials used in this study include paper, sponge, cotton, and wire mesh, each having different porosity characteristics that are expected to influence the amount of air entering the combustion chamber and consequently affect engine performance. This research employed an experimental method with a quantitative approach. Torque and power tests were conducted using a dynamometer, while fuel consumption was measured based on the amount of fuel used at specific engine speeds. The data were collected through repeated tests and analyzed statistically to determine the effect of air filter material variations on the observed parameters. The results are expected to reveal differences in torque, power, and fuel consumption among the various air filter materials and to identify the most effective filter material for improving engine performance while maintaining fuel efficiency.
Pengaruh Variasi Jumlah Lubang Injektor terhadap Daya Torsi dan Konsumsi Bahan Bakar NMAX: Effect of Variable Number of Injector Holes on Torque Power and NMAX Fuel Consumption Pande Gede Oka Suarartawan; Nyoman Arya Wigraha; Kadek Rihendra Dantes; Edy Agus Juny Artha
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.119418

Abstract

This study aims to analyze the effect of variations in the number of injector holes on power, torque, and fuel consumption on Yamaha NMAX 155 CC motorcycles with Pertamax RON 92 fuel. The study used a quantitative experimental method with a variety of injectors of 4 holes, 6 holes (standard), 8 holes, and 10 holes. The test was carried out using dynotest to obtain engine performance data as well as fuel consumption measurements at various engine revolutions. The results showed that variations in the number of injector holes affected engine power, torque, and fuel consumption. An increase in the number of injector holes tends to increase engine power and torque, but on the other hand fuel consumption also tends to increase. Thus, variations in the number of injector holes have been proven to affect engine performance characteristics and fuel consumption, so the selection needs to be adjusted to the needs of the user, whether it prioritizes improving performance or fuel efficiency. Keywords: Hole injector, power, torque, fuel consumption, Yamaha NMAX 155 CC.
Rancang Bangun Prototype Sistem Keamanan Sepeda Motor Transmisi Manual Berbasis Kombinasi Elektro Mekanik: Development of an Electromechanical Combination-Based Security System Prototype for Manual Transmission Motorcycles Bayu Angga; Nyoman Arya Wigraha; I Gede Wiratmaja
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 14 No. 2 (2026)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v14i2.120597

Abstract

Motor vehicle theft remains a frequent problem in Indonesia. Many older motorcycles, particularly manual transmission vehicles manufactured before 2007, still use standard security systems such as handlebar locks, which have several weaknesses and can be manipulated by thieves. This research aims to develop a prototype security system for manual transmission motorcycles based on an electromechanical combination that can provide additional protection for the vehicle. This research employed a Research and Development (R&D) method with the 4D development model (Define, Design, Develop, and Disseminate). The research stages included needs analysis, prototype design, product development, and feasibility testing through validation by instrument content experts, design experts, and manufacturing experts. Data was collected using questionnaires and documentation, then analyzed using quantitative descriptive analysis techniques. The results of the study indicate that the prototype electromechanical-based motorcycle security system was successfully developed. The instrument content expert validation obtained a validity score of 1, categorized as very high. The design expert feasibility test obtained a 100% rating, categorized as very feasible, while the manufacturing expert test obtained a 100% rating, categorized as very feasible. Based on these results, the prototype of a manual transmission motorcycle security system based on an electro-mechanical combination is declared suitable for use as an additional security system. Keywords : electromechanical, prototype, motorcycle security system, manual transmission, 4D development.
Co-Authors Bayu Angga Edi Elisa Edy Agus Juny Artha Gede Wiratmaja I Gede Wiratmaja Kadek Ari Setiawan Kadek Rihendra Dantes Kadek Suta Mertaya Ni Made Novia Kusumayani Pande Gede Oka Suarartawan Putu Agus Hendrawan