1. Introduction
Welcome to the world of Scalextric! This instruction manual provides essential information for the proper setup, operation, and maintenance of your Scalextric 1978 Swedish Grand Prix Twin Pack. This limited edition set features two iconic 1:32 scale slot race cars: the Brabham BT 46B 'Fan Car' and the Lotus 79. Designed for enthusiasts aged 14 and up, these highly detailed models bring the excitement of classic Formula One racing to your home track.
2. Product Overview
Your Scalextric 1978 Swedish Grand Prix Twin Pack (Model C4392A) includes two 1:32 scale slot race cars, meticulously detailed to replicate their historical counterparts. The set contains:
- 1 x Brabham BT 46B 'Fan Car' (driven by Niki Lauda & John Watson)
- 1 x Lotus 79 (driven by Mario Andretti)
Each car features a highly detailed interior and driver figure, along with an easy-change braid system and Magnatraction for enhanced grip and performance on the track.

Image: The Scalextric 1978 Swedish Grand Prix Twin Pack, showcasing the Brabham BT 46B and Lotus 79 models within their display box.

Image: A detailed front view of the Scalextric Lotus 79 slot car, highlighting its livery and design.

Image: A detailed rear view of the Scalextric Brabham BT 46B slot car, showing its unique 'fan car' design element.
3. Setup
These slot cars are compatible with all 1:32nd scale analog slot car race tracks, including Scalextric ARC ONE and ARC AIR systems. Follow these general steps for track setup and car placement:
- Track Assembly: Ensure your Scalextric track is correctly assembled and all connections are secure. Refer to your track system's specific instruction manual for detailed assembly steps.
- Power Connection: Connect the power supply to the track as per your track system's instructions. Verify that the power is switched off before placing cars.
- Car Placement: Carefully place each slot car onto the track, ensuring the braids beneath the car are correctly seated within the track's slot. The guide blade should align perfectly with the slot.
- Controller Connection: Connect your hand controllers to the power base.
Once all connections are made and cars are correctly positioned, you can switch on the power to begin racing.

Image: The Brabham BT 46B and Lotus 79 slot cars positioned on a Scalextric race track, ready for racing.
4. Operating Instructions
Operating your Scalextric slot cars is straightforward. Use the hand controller to regulate the speed of your car. Press the trigger to accelerate and release to slow down. Practice is key to mastering cornering and maintaining optimal speed without derailing.
- Speed Control: Apply gentle pressure to the controller trigger for smooth acceleration. Avoid sudden, full throttle applications, especially in corners, to prevent de-slotting.
- Cornering: Reduce speed before entering a corner and gradually accelerate as you exit. This technique helps maintain traction and prevents the car from flying off the track.
- Braking: Most Scalextric controllers include a braking function (often by fully releasing the trigger or a separate button). Utilize braking to control speed effectively and avoid collisions.

Image: The Brabham BT 46B and Lotus 79 slot cars in action on a race track, demonstrating dynamic racing.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Scalextric slot cars and track.
5.1 Car Maintenance
- Braid Replacement: The braids (electrical contacts) on the underside of the car will wear down over time. Replace them when they appear frayed or flattened. To change, gently pull the old braids out and insert new ones, ensuring they are splayed slightly to make good contact with the track rails.
- Cleaning: Use a soft, lint-free cloth to wipe dust and debris from the car body and wheels. Ensure no hair or fibers are wrapped around the axles.
- Gear Inspection: Periodically check the crown and pinion gears for wear or misalignment. Proper meshing is crucial for smooth power delivery. If you notice slipping or unusual noise during acceleration, inspect the gears and adjust or replace if necessary.
- Lubrication: Apply a small amount of specialized slot car lubricant to the motor bearings and axle points as recommended by Scalextric. Avoid over-lubrication.
5.2 Track Maintenance
- Track Cleaning: Keep the track rails clean and free of dust, dirt, and oxidation. Use a track cleaning rubber or a soft cloth dampened with a mild cleaning solution (avoid harsh chemicals) to wipe the rails.
- Connection Check: Ensure all track sections are firmly connected to maintain consistent electrical contact.
6. Troubleshooting
If you encounter issues with your Scalextric set, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Car not moving | No power to track; dirty braids/track rails; loose connections; damaged motor. | Check power supply and track connections. Clean braids and track rails. Ensure braids are splayed. Inspect motor for damage. |
| Car de-slots frequently | Excessive speed in corners; worn tires; misaligned guide blade; uneven track surface. | Reduce speed in corners. Check tires for wear and replace if necessary. Ensure guide blade is straight. Verify track sections are flat and securely joined. |
| Poor or inconsistent performance | Dirty track rails; worn braids; gear issues; motor problems. | Clean track rails and replace braids. Inspect and lubricate gears. If issues persist, motor may require professional inspection. |
| Loud noise from car | Gear misalignment or damage; debris in drivetrain. | Inspect gears for damage or debris. Ensure gears are properly meshed and lubricated. |
7. Specifications
- Model Number: C4392A
- Scale: 1:32
- Product Dimensions: 12 x 9 x 4 inches (packaging)
- Item Weight: 1.62 pounds (packaging)
- Manufacturer: Hornby Hobbies
- Release Date: September 26, 2023
- Recommended Age: 14 years and up
8. Safety Information
WARNING: Not suitable for children under 3 years due to small parts which may present a choking hazard. This product is recommended for ages 14 and up. Please remove all packaging materials before use and dispose of them responsibly. Adult supervision is recommended during play, especially for younger users.
9. Warranty and Support
For warranty information, technical support, or spare parts, please visit the official Scalextric website or contact Hornby Hobbies customer service. Keep your proof of purchase for any warranty claims. Contact details can typically be found on the product packaging or the manufacturer's website.




