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Why Won’t My Traxxas UDR Turn Off?

If your Traxxas UDR will not turn off then keep reading to learn why and what you can do about it. Also, learn what scale the UDR is and if it’s possible to run it on a 3S battery…

Why Won’t My Traxxas UDR Turn Off?

Here are the common reasons and solutions for this:

Faulty Power Switch:

The most common reason why your Traxxas UDR won’t turn off is due to a faulty power switch. This switch might be damaged due to rough use, dirt, or moisture. In this case, you may need to clean or replace the power switch.

Check the switch for any visible signs of damage. If it appears physically intact but still fails to operate, the problem could be internal and may require professional help.

Receiver Issue:

If the power switch is not the culprit, the problem might lie in the receiver. This is the part of the RC vehicle that receives the signals from the transmitter. If the receiver malfunctions, it may fail to receive the correct signals, including the one to turn off the vehicle.

Check the receiver for any signs of damage. If the receiver is not functioning properly, it may need to be replaced.

Electronic Speed Controller (ESC) Problem:

The ESC controls the electric power that drives the motor, and it may be the cause if your UDR is not turning off. If the ESC is malfunctioning or has been damaged, it can create various issues, including power-related ones. It may require recalibration or replacement.

Software Glitch:

Like many other modern electronic devices, your Traxxas UDR is controlled by onboard software. Sometimes, this software can experience glitches that cause unexpected behavior, such as the vehicle not turning off.

If this is the case, resetting the firmware to factory settings might resolve the issue. Refer to the user manual or Traxxas’ official website for instructions on how to do this.

Battery Issue:

Lastly, if your Traxxas UDR is refusing to power down, it might be due to an issue with the battery. Over time, batteries can degrade, leading to various power-related problems.

If you notice that your RC car’s battery is swollen or leaking, it should be replaced immediately as it can pose a safety hazard.

What Scale is a Traxxas UDR?

Rc car, Traxxas UDR.
Rc car, Traxxas UDR.

The Traxxas Unlimited Desert Racer, also known as the Traxxas UDR, is a 1:7 scale model. The 1:7 scale of the Traxxas UDR is an indicator of the model’s size relative to the size of the actual vehicle it represents.

This means the Traxxas UDR is one-seventh the size of a full-sized Unlimited Desert Racer.

To put it in perspective, if the actual racing truck were seven meters long, the Traxxas UDR model would be approximately one meter long. Similarly, if the full-sized vehicle were seven feet long, the UDR would be roughly one foot long.

Why Scale Matters

Scale is a vital element in remote-controlled vehicles for a few reasons. Firstly, it can greatly influence the model’s level of detail.

Larger scale models often include more intricate designs and features because they have more space to accommodate them. The Traxxas UDR, for instance, boasts an impressively detailed body, closely replicating the full-sized desert racing truck.

Secondly, the scale can impact the handling and performance of the RC vehicle. In general, larger models tend to handle rough terrains better due to their weight and size. The 1:7 scale of the Traxxas UDR provides a realistic driving experience, mimicking the driving dynamics of a real desert racing truck.

Finally, the scale also determines the model’s compatibility with various accessories and upgrades. For instance, parts designed for a 1:10 scale model will not fit a 1:7 scale model like the Traxxas UDR.

Can You Run a Traxxas UDR on 3S?

Yes, it’s possible to run the Traxxas UDR on a 3S LiPo battery. However, this will significantly reduce the overall speed and power of the vehicle, so it’s important to manage your expectations. The UDR is designed to run on 6s LiPo for peak performance.

Running on 3S will limit the UDR to around 40% of its potential top speed compared to a 6s setup. The reduced power also means it may struggle with more challenging terrain and stunts.

However, running the UDR on 3S can also have certain benefits. It will be easier to control for beginners, the battery life will typically last longer, and there will be less strain on the vehicle’s components, potentially extending its lifespan.

Considerations When Running UDR on 3S

If you decide to run your UDR on a 3S LiPo, there are a few things you need to consider:

Speed Control Calibration: Ensure that your Electronic Speed Control (ESC) is correctly calibrated for the lower voltage of a 3S battery. This can usually be done through the ESC’s programming menu.

  • Battery Tray Size: Check the dimensions of your 3S battery to ensure it will fit in the UDR’s battery tray. You may need a battery adaptor or a spacer to secure the battery.
  • Motor Temperature: While the motor and ESC should handle 3S without an issue, always keep an eye on motor and ESC temperatures, especially if you’re running the vehicle hard.
  • Drive Carefully: With less power and speed, the UDR might struggle on rough terrain or steep slopes. Drive accordingly to avoid getting stuck or causing unnecessary wear and tear on the vehicle.