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All Journal Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Archipelago Engineering
Sefnath J Etwan Sarwuna
Universitas Pattimura
Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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ANALISA KINERJA REM CAKERA AKIBAT MODIFIKASI KALIPER RODA BELAKANG TERHADAP KESELAMATAN PENGENDARA SEPEDA MOTOR Jandri Louhenapessy; Sefnath J Etwan Sarwuna
ALE Proceeding Vol 2 (2019): Archipelago Engineering (ALE)
Publisher : Fakultas Teknik Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ale.2.2019.102-107

Abstract

Abstrak Akhir-akhir ini sepeda motor banyak beralih menggunakan perangkat rem cakera dibanding rem tromol. Pemilik sepeda motor banyak memodifikasi remnya dari tromol menjadi cakram. Bahkan pabrikan sendiri juga sudah banyak menggunakan rem cakram dalam produk kendaraannya. Selain itu, perangkat rem cakram pabrikan banyak dimodifikasi juga oleh pemilik, baik itu piriangan maupun jaumlah silinder dalam kaliper. Telah dilakukan penelitian untuk menilai fenomena yang berkembang yang dikaitkan dengan kinerja rem cakera yang mengalami modifikasi jumlah silinder kaliper. Metode penelitian adalah eksperimental dengan memodifikasikan jumlah silinder kaliper 1, 2 dan 4 pada roda belakang dan mengkonstankan jumlah silinder kaliper roda depan 2. Kendaraan dioperasikan menggunakan kecepatan 40 km/h dan 60 km/h serta diterapkan beban 3 kg pada handle rem dan 6 kg pada pedal rem. Modifikasi menggunakan jumlah silinder kaliper 2 menghasilkan kinerja pengereman optimal/terbaik, dimana gaya pengereman (Fxf dan Fxr) sebesar 26,29 kg dan 18,55 kg, persentase proporsi gaya pengereman (Kbf dan Kbr) sebesar58,63 % dan 41,37 %, perlambatan dalam unit g {(a/g)f dan (a/g)r} sebesar 0,33, efisiensi pengereman (ηf dan ηr) sebesar 0,44 dan jarak pengereman (40 km/h dan 60 km/h) sebesar 10,01 m dan 19,05 m.
Study of Pertamax and Pertamax Turbo Comparison on the Performance of 135CC 2-Stroke Motorcycles Sefnath J Etwan Sarwuna; Willem Marthinus Eric Wattimena; Ekinov Limbong
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 16 No. 1 (2026): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/6az5hq87

Abstract

Advances in vehicle technology and issues related to fossil fuel reserves have prompted Pertamina, as a fuel producer, to produce environmentally friendly, economical, and fuel-efficient fuels that also maximize engine performance. There are several types of motor fuels, including premium, pertalite, pertamax, and pertamax turbo. Each type has different specifications and octane number. The higher the octane number of the fuel used in a vehicle, the better the engine performance, while also reducing carbon deposits in the combustion chamber and producing emissions that are not harmful to the environment. Therefore, this study examines the effect of using Pertamax and Pertamax Turbo fuels on the torque and power of a 135cc RX-King motorcycle. This research is experimental in nature, using a Power Dyno testing device. The motorcycle is placed on the Power Dyno chassis and connected to a computer device, after which the torque and power values at certain revolutions are displayed on the monitor screen. The results of the study show that Pertamax fuel produces a maximum torque value of 9.00 Nm at 7116 RPM and power of 9.17 HP at 8181 RPM, while Pertamax Turbo fuel produces a maximum torque value of 9.26 Nm at 7250 RPM and power of 10.71 HP at 8181 RPM. This shows an increase in the performance of the Yamaha RX-King 135 engine when using Pertamax Turbo, which has a higher octane number than Pertamax.
Co-Authors Ekinov Limbong Jandri Louhenapessy Willem Marthinus Eric Wattimena