Rustler Ultimate 4S - Toyo Speed Machine

Описание: This video presents a custom-built Rustler Ultimate 4S speed machine (0:02-0:11) by Parkflyers RC. The build focuses on converting a stock Rustler Ultimate into a high-performance RC car capable of achieving speeds around 73 mph (3:25).

Key upgrades and features include:
• VXL 4S Power System (0:11): A 2400 KV long can motor and 4S speed control are used for increased efficiency, cooler operation, and more power compared to a 3S system (0:41-0:52).
• Traxxas 5000mAh Battery (0:52-1:16): Chosen for its perfect fit within the chassis and secured with an upgraded battery strap kit.
• Mystery Springs (1:36-2:06): Longer and more plush than stock springs, these enhance ride height and improve handling, especially with the increased weight from the new system and battery.
• Power Hobby 17mm Adapters and Toyo Proxies Tires (2:09-3:22): These adapters widen the stance for stability, while the Proline Toyo Proxies are highlighted as the most realistic and durable on-road tires, rated up to 120 mph. The video emphasizes matching front and rear tire diameters to avoid stressing the differential (4:30-5:00).
• Upgraded Drivetrain (3:29-3:40): A steel spur gear with a center differential replaces the stock slipper clutch for high-speed reliability.
• Stability Enhancements (3:48-4:21): The car is designed for extreme stability at high speeds, avoiding the squirrely behavior of other RC builds, largely due to the rigid tires and receiver gyro.
• Camber Setup (5:27-5:47): Rear camber is set to zero for maximum traction, while the front has a negative one-degree camber for improved steering without sliding. An aluminum camber gauge is recommended for precision (5:47-6:07).
• Cooling System (6:08-6:55): A Traxxas heat sink for the motor and a fan for the speed control are installed, providing sufficient cooling for the efficient 4S system.
• Sway Bar and Wheelie Bar (6:56-7:42): The stock sway bar (on the Ultimate) is essential for high-speed stability, and a beefier wheelie bar from a 2WD Slash is used for durability.

The video concludes by emphasizing that this build creates an enjoyable and stable speed machine capable of mid-70s speeds (7:50-8:04), focusing on drivability rather than extreme, potentially unsafe speeds (8:05-8:17). The car also handles and drifts well at mid-speeds (8:20-8:26).