The Arrma Infraction 8S is the talk of the town among RC enthusiasts. Before diving into its exciting upgrades for reaching higher speeds, let’s take a step back and understand the V2 version, released in November 2021. The V1 of the Infraction made waves with its remarkable performance back in 2019, but the V2 aimed to address the weaknesses of its predecessor.
Both versions, V1 and V2, are powered by 6S batteries, but the buzz among RC fans revolves around the 8S upgrade for the Infraction. Many enthusiasts have been seen upgrading their Infractions, integrating the 8S battery for an extra punch of speed. In this article, we’ll explore the enhancements in the V2 and delve into the fascinating world of upgrading the Infraction to achieve blistering speeds.
Arrma Infraction V2 Overview
The 1/7 INFRACTION 6S BLX V2 ALL-ROAD TRUCK RTR by ARRMA is packed with impressive features that make it a powerhouse in the RC car world. Released in two stunning color variants, blue and gray, this model offers a wide array of functionalities:
Key Features:
- Advanced Radio System: Spektrum® 3-Channel DX3™ 2.4GHz DSMR® radio and SR6110AT Receiver with AVC®
- Smart Telemetry and Compatibility: Compatible with Spektrum® Dashboard™ app for iOS or Android
- Enhanced Electronics and Power: Spektrum® Firma™ 150A Smart ESC and Firma™ 4074 2050Kv Brushless Motor
- Mechanical Upgrades: New electronics module, mechanical handbrake feature, tunable wing, front splitter, and rear diffuser
- Robust Build: 3mm Plated, 6061-T6 anodized aluminum chassis with a center brace for durability
- Drivetrain and Suspension: Heavy-duty drivetrain, steel driveshafts, adjustable aluminum shocks, and shock towers
- Terrain Versatility: dBoots® Hoons™ all-road tires are suitable for various terrains
- Waterproof Features: Water-resistant receiver box and large battery tray
Specifications:
- Speed Capabilities: Achievable speeds of 80+ MPH (conditions apply) with a 6S LiPo and the included speed pinion gear
- Chassis Material: 6061-T6 anodized aluminum
- Warranty: 2 years
The Infraction 6S BLX 4WD presents a compelling combination of power and style, offering top-notch performance. The new feature makes drifting and stunting thrilling and easy for intermediate drivers.
Now let’s get into the Infracion 8S upgrades.
Arrma Infraction with an 8S Upgrade: Challenges and Modifications
Upgrading to 8S: Initial Challenges
It’s awesome how fast your RC car can go with an 8S power system, but there are a few hurdles to overcome. Transitioning from a standard 6S configuration to an 8S requires more than just swapping batteries. It demands a comprehensive modification of crucial components to handle the increased power efficiently.
The following components need to be upgraded beyond 8S batteries:
- ESC (Electronic Speed Controller): An 8S setup demands an ESC capable of handling higher voltages and currents.
- Motor: Matching an appropriate motor with the 8S power to prevent overheating and burnout.
- Cooling System: Powerful motors generate heat, so efficient cooling mechanisms are needed.
- Spool and Gear Ratio: Selecting the correct spool and gear ratios compatible with the increased power to maintain stability and efficiency.
- Overall Chassis Reinforcement: Strengthening the chassis and drivetrain to handle amplified torque and speed without compromising durability.
The Uphill Battle: Overcoming Challenges
While trying these upgrades we faced various challenges encountered during the Infraction’s upgrade journey:
- Motor Fitting: Fitting an 1800 KB Poseidon motor within the existing confines of the car, pushing the boundaries of space limitations.
- Heat Management: Heat issues surfaced during high-speed runs, necessitating additional cooling systems and fan installations.
- Compatibility Concerns: Maintaining seamless compatibility between upgraded components and existing car systems.
- Spool Size Dilemma: The team deliberated on the correct spool size to balance speed and stability, ensuring optimal performance.
Modifications for improvement
In response to these challenges, we made modifications to enhance the Arrma Infraction’s performance including:
- Upgraded ESC: Installed an 8S ESC, capable of handling the increased voltage and current requirements, ensuring smoother power delivery.
- Motor Replacement: Replaced the stock motor with a high-powered Poseidon motor, specifically designed to handle the demands of the 8S setup.
- Custom Cooling Setup: Implemented custom cooling mechanisms, including additional fans, to effectively dissipate heat generated by the high-powered motor.
- Chassis Reinforcement: Strengthening the chassis and drivetrain to endure enhanced torque and speed without compromising structural integrity.
- Optimized Gear Ratio: Adjusting the spool and gear ratio to balance speed and stability, ensuring an efficient and controlled drive.
Challenges and Overcoming Hurdles
In this upgrade journey, we explored the immense potential of upgrading the Infraction to an 8S power system. It provided a first-hand look at its staggering speeds and electrifying experience. However, this process also brought to light the intricate hurdles and detailed modifications required to wield this enhanced power effectively.
Throughout our experiment, we faced various challenges head-on. With so little space, the 1800 KB Poseidon motor had to fit. The critical issue of heat management during high-speed runs demanded meticulous attention and custom solutions. Our team talked over the correct spool size and gear ratios, aiming to strike the perfect balance between mind-boggling velocity and stable performance.
During our challenges, we managed to push the boundaries. We achieved an impressive top speed of nearly 142 mph+, a testament to the remarkable capabilities of the Infraction with the 8S upgrade.
However, our journey wasn’t without its concerns. When initiating the engine, we encountered a substantial power surge that not only drained energy rapidly but also resulted in carbon powder emissions. This unexpected occurrence prompted us to reassess and refine the power management system. We stressed the necessity for a more balanced and efficient energy deployment mechanism for optimal performance.
Despite the tough path we walked, this journey wasn’t just about overcoming hurdles. It showcased the tremendous potential of transforming a high-performance RC car into an unparalleled speed monster.
Each modification laid the groundwork for future enhancements and optimizations, revealing new avenues for pushing the limits of RC technology and performance.
Conclusion
RC fans love faster cars. Experienced drivers often try risky things to reach higher speeds. But if you’re not really good at fixing things, we don’t recommend making extreme changes to your RC car.
Making a car remain fast, especially when making big changes, is not easy. The companies that make these cars are always trying to make them faster, but they have to make sure they’re safe and reliable too. That’s why they don’t make the cars insanely fast. Companies are always working to give good speed and performance without making things too complicated or dangerous. So, it’s better to be safe than sorry when making big changes to your RC car.
