Introduction
This manual provides essential information for the proper setup, operation, and maintenance of your Plarail R-21 Twice Curved Track set. This set includes four pieces of double curved rail, designed to expand your Plarail railway layouts.
The R-21 tracks are a fundamental component for creating diverse and engaging train layouts, allowing for sharper turns and more intricate designs within your Plarail system.

Image: Four individual blue Plarail R-21 twice curved track pieces, ready for assembly.
Setup and Assembly
The R-21 Twice Curved Tracks are designed for easy connection with other Plarail track pieces. Each piece features interlocking connectors at both ends, ensuring a secure fit.
- Identify Connectors: Locate the male and female connectors on each track piece. The male connector has two prongs, and the female connector has two corresponding slots.
- Align Tracks: Align the male connector of one track piece with the female connector of another. Ensure they are oriented correctly to form the desired curve.
- Snap Together: Gently push the track pieces together until you hear or feel them snap securely into place. A firm connection is crucial for stable train operation and to prevent derailments.
- Form Curves: These tracks are designated as "twice curved," meaning they create a sharper curve compared to standard curved tracks. Two R-21 pieces connected together form a 90-degree curve, allowing for compact track layouts.

Image: A diagram illustrating how Plarail track pieces connect and examples of track layouts using curved and straight sections. Note that vehicles and other track types are sold separately.
For optimal performance, ensure your track layout is on a flat, stable surface. Avoid setting up tracks on uneven surfaces or near edges where trains could fall.
Operation
The R-21 Twice Curved Tracks are passive components of a Plarail railway system. Their primary function is to provide the physical path for Plarail trains to travel along a curved route.
- Once assembled into a complete circuit or desired layout, place a compatible Plarail train onto the tracks.
- Activate the train's power switch (if applicable) to begin movement.
- Observe the train as it navigates the curves. The "twice curved" design allows for more compact and intricate layouts, enabling trains to turn sharply within limited spaces.

Image: A white and blue Plarail train model running smoothly on a blue curved track section, demonstrating the product in use.
Maintenance
Proper maintenance ensures the longevity and smooth operation of your Plarail tracks.
- Cleaning: Regularly wipe the track surfaces with a soft, dry cloth to remove dust, dirt, and debris. Avoid using harsh chemicals, abrasive cleaners, or excessive water, as these can damage the plastic material or affect track conductivity for certain train types.
- Storage: When not in use, store track pieces in a clean, dry place away from direct sunlight and extreme temperatures. Storing them flat or in their original packaging can help prevent warping or bending over time.
- Inspection: Periodically inspect track pieces for any signs of damage, such as cracks, chips, or bent connectors. Damaged pieces should be replaced to ensure safe and reliable operation and to prevent potential derailments.
Troubleshooting
If you encounter issues with your Plarail R-21 tracks, consider the following common solutions:
- Train Derailments:
- Ensure all track connections are firm and flush. Gaps or misalignments can cause trains to derail.
- Check for any foreign objects or debris on the track surface that might obstruct the train's wheels.
- Verify that the entire track layout is laid on a flat and stable surface. Uneven surfaces can lead to instability.
- Inspect the train's wheels for any damage, dirt, or obstructions that might prevent smooth movement.
- Tracks Not Connecting:
- Ensure you are aligning the male and female connectors correctly. They are designed to fit in only one orientation.
- Check for any plastic burrs, deformities, or foreign material on the connectors that might prevent a proper fit. Gentle cleaning or trimming (if safe) may be required.
Specifications
| Feature | Detail |
|---|---|
| Model Number | R-21 |
| Product Type | Twice Curved Track (4 Pieces) |
| Brand | Takara Tomy |
| Dimensions | 6.69 x 16.14 x 0.67 inches (approximate package dimensions) |
| Item Weight | 5 ounces |
| Recommended Age | 6 years and up |
Warranty and Support
Specific warranty information for the Plarail R-21 Twice Curved Track set is not provided within this manual. For details regarding warranty coverage, return policies, or technical support, please refer to the product packaging or contact Takara Tomy customer service directly.
You may also visit the official Takara Tomy website for further assistance, product registration, and additional product information.





