RC Outdrives, Drive Cups & Yokes
Keep your RC vehicle’s power transferring smoothly from the motor to the wheels with our extensive range of outdrives, drive cups, and yokes. These crucial drivetrain components endure immense stress during acceleration, jumps, and hard cornering, making them some of the most common wear items on any remote-control car or truck.
Whether you are replacing a worn stock part or upgrading to heavy-duty hardened steel to handle a high-power brushless motor, Hobbies Direct has the parts you need. We stock high-quality replacements and upgrades from industry-leading brands like Traxxas, Arrma, Axial, and Team Associated, with fast Australia-wide shipping.
Understanding Your RC Drivetrain: Outdrives, Cups & Yokes
When you pull the throttle on your transmitter, a complex chain of components works instantly to deliver power to the wheels. Within this system, outdrives, drive cups, and yokes play a vital role. Because they are constantly subjected to high torque and rotational friction, keeping these parts in top condition is essential for maintaining performance and preventing catastrophic drivetrain failure.
What is the Difference Between Outdrives, Drive Cups, and Yokes?
While they all serve to bridge the gap between your transmission, differentials, and driveshafts, they each have distinct designs and functions:
- Differential Outdrives: These are the metal shafts that exit directly from the differential housing. They transfer rotational power from the front, rear, or centre differential to the external driveshafts.
- Drive Cups (or Output Cups): These cup-shaped components house the pins of dogbones or CV (constant velocity) driveshafts. The slotted design allows the driveshaft to move up and down freely with the vehicle’s suspension while still transferring power.
- Drive Shaft Yokes: Typically found on vehicles utilising U-joint (universal joint) style driveshafts (highly popular in Traxxas models and trail crawlers like Axial), yokes cradle the cross-pins of the joint to connect the driveshaft halves to the differential or transmission outputs.
When is it Time to Replace or Upgrade?
Because these parts are subjected to intense friction, they will wear out over time. Look out for the following signs that indicate your outdrives, cups, or yokes need attention:
- Slop and Play: If the slots in your drive cups have widened or 'egged out' from the driveshaft pins hammering against them, you will experience a loss of throttle response and increased vibration.
- Visible Wear and Grooves: Deep grooves worn into the metal of the cups or yokes can cause the driveshaft pins to bind, restricting suspension movement and accelerating wear.
- Upgrading to Brushless Power: If you are upgrading your RC car from a brushed motor to a brushless system, or moving up to high-voltage LiPo batteries (like 3S, 4S, or 6S setups), stock plastic yokes and standard metal cups will likely twist or shear under the sudden increase in torque. Upgrading to hardened steel or heavy-duty CNC-machined components is highly recommended.
