JAJAL RISETAN 59 OPEN STROKE PENDEK DALAM NEGERI | CDUCKZ [YOGYAKARTA]

Summary

The video shows a mechanic named Danang building a custom motorcycle engine. He discusses technical details about the engine parts like the carburetor, CDI, strokes, etc. and his plans to optimize the bike for speed and stability. Other mechanics provide input and there is collaboration to source innovative parts like the battery from a RC plane builder friend. The goal is to create an affordable local bike that can compete against imported sports bikes in terms of performance. Test rides and further refinements to the engine are planned for the coming weeks.

Takeaways

• 😊 They are discussing modifications and upgrades to a local motorcycle engine.
• 👨‍🔧 The mechanic is installing a new programmable electronic carburetor.
• 🔧 They will try to achieve high RPM power while maintaining good low-end torque.
• 🚗 The goal is a 201 km/hr 1/4 mile time, requiring precise tuning.
• ⚙️ The CDI ignition system can handle higher voltage batteries up to 17 volts.
• 🔋 A lightweight 16 volt RC plane battery will be used instead of a bulky automotive battery.
• 🛠 Custom parts like the intake and clutch will be made locally instead of imported.
• 📈 The engine dyno will be used to develop the perfect ignition timing and fuel maps.
• ⏱ The target is to have the engine running and tuned within a week.
• 😊 Both mechanics share a passion for modifying engines despite different backgrounds.

Q & A

What kind of motorcycle engine is being discussed?

They are discussing a local Indonesian motorcycle engine that they are modifying and tuning.

What modifications are they making to the engine?

They are increasing the cylinder size to 402cc, changing the carburetor, CDI system, ignition pickup coil length, and making other tweaks to optimize power and performance.

What is the goal for the engine performance?

The goal is to reach around 155 hp. They want strong mid-range power while still being reliable.

What dyno will they use to test the engine?

They plan to dyno test the engine on a Dynojet to measure the horsepower and torque curves.

What fuel will they use in this engine?

They plan to use Pertamax racing fuel.

What battery are they using and why?

They are using a small 16 volt 4 cell battery made for RC planes because it is lightweight and meets the electrical demands.

What CDI and ignition system will they use?

They plan to use a programmable CDI system that allows them to easily adjust the ignition mapping instead of changing physical parts.

When do they expect to start the engine?

They are hoping to have the engine started by next week.

What is the advantage of this engine over imported engines?

Since this engine uses primarily local Indonesian parts, it will be easier and cheaper to maintain and modify compared to imported engines.

What future plans do they have for this engine design?

If they can get the 402cc version reliable and powerful, they want to build a 125cc version for lower classes using a similar design.