Triumph TR6 is a unique car known for its power and beauty. As with every other car, certain aspects of the car’s suspension system can incur issues. One of the biggest problems with this car’s design would be with regards to the semi trailing arm rear suspension which tends to incur problems with roll steer. This guide explores how to improve the TR6 rear suspension roll steer with practical upgrades and adjustments, ensuring better stability and driving pleasure.
Understanding TR6 Rear Suspension Roll Steer
Roll steer refers to the unintended steering movement of the rear wheels caused by suspension motion during cornering. This can result in:
- Oversteer: Rear wheels toe out, leading to sharper turns but decreased stability.
- Understeer: Rear wheels toe in, causing the car to resist turning.
For the TR6, the factory semi-trailing arm suspension geometry contributes to these characteristics. By addressing roll steer, you can significantly enhance the vehicle’s handling and safety.
Key Areas to Address Roll Stee
1. Inspect and Replace Worn Bushings
- The Pivot bolt can move too freely when the rubber bushings of the rear suspension get worn off.
- Retrofit Suggestion: Getting stiff Polyurethane Bushings instead of the old rubber ones can translate into more stability.
- Advantages: Improves suspension accuracy and eliminates roll steer effects induced by excessive movement.
2. Adjust Trailing Arm Geometry
The angle of the trailing arms directly impacts roll steer behavior:
- Modify Mounting Points: Adjust the mounting angle to optimize suspension travel and minimize roll steer tendencies.
- Alignment Fine-Tuning: Balance the toe-in and toe-out dynamics for neutral handling.
3. Upgrade Rear Springs and Shocks
Springs and shock absorbers play a significant role in controlling suspension movement:
- Progressive Springs: Provide consistent support, ensuring the suspension maintains proper geometry.
- High-Performance Shock Absorbers: Opt for adjustable shocks to fine-tune rebound and compression rates.
| Component | Upgrade Option | Benefits |
|---|---|---|
| Springs | Progressive coil springs | Improved load handling and ride comfort |
| Shocks | Adjustable gas shocks | Customizable damping for different conditions |
4. Install a Rear Anti-Roll Bar
A rear anti-roll bar helps reduce body roll, stabilizing the suspension during cornering:
- Effectiveness: Minimizes suspension angle changes that contribute to roll steer.
- Installation Tips: Ensure the anti-roll bar complements the front suspension setup for balanced handling.
5. Realign the Rear Suspension
Proper alignment is crucial to minimize roll steer:
- Toe Settings: Aim for slight rear toe-in to stabilize the vehicle under cornering forces.
- Camber Settings: Maintain a moderate negative camber for optimal cornering grip.
6. Consider CV Joint Conversion
The original swing-axle design in the TR6 can lead to unpredictable suspension behavior:
- Upgrade to CV Joints: Modern constant velocity joints maintain consistent alignment during suspension movement.
- Result: Reduced roll steer and smoother performance.
7. Upgrade Suspension Components
Modern components offer improved adjustability and precision:
- Adjustable Trailing Arms: Fine-tune the geometry to suit specific driving conditions.
- Coilover Kits: Replace stock springs and shocks for a fully adjustable suspension setup.
8. Reinforce the Chassis
A stiff chassis reduces flex that can exacerbate roll steer:
- Install Braces: Rear chassis braces add rigidity to suspension mounting points.
- Inspect for Weakness: Address rust or damage in the frame to ensure consistent performance.
Tips for Optimizing TR6 Rear Suspension Roll Steer
- Front And Rear Suspension Adequation: The rear and the front ends must work well together for the overall stability.
- Regular Checks: It is vital to check certain components like bushings for wear and tear, as they can be damaged.
- Take Manual Test Drives: After any change in the mode it is recommended to drive after settings have been adjusted.
FAQs
1. What is roll steer in a TR6?
Roll steer occurs when the rear wheels steer unintentionally due to suspension movement during cornering. This is common in the semi-trailing arm design of the TR6.
2. How do bushings affect TR6 suspension performance?
Worn bushings allow excess movement in the suspension, contributing to roll steer. Upgrading to polyurethane bushings improves precision and durability.
3. Can I eliminate roll steer completely in a TR6?
While it may not be possible to eliminate roll steer entirely, upgrades like adjustable trailing arms, proper alignment, and modern components can significantly reduce its impact.
4. Why is chassis stiffness important for roll steer control?
A stiff chassis prevents flexing, ensuring the suspension geometry remains consistent, which helps minimize roll steer.
5. What is the benefit of a CV joint conversion in a TR6?
A CV joint conversion ensures consistent rear wheel alignment during suspension movement, reducing roll steer and improving handling.
Conclusion
Improving how to improve the TR6 rear suspension roll steer involves a combination of upgrading components, adjusting geometry, and reinforcing the chassis. From replacing bushings to installing CV joints, each step enhances handling and stability. By addressing these factors, your TR6 will deliver a safer and more enjoyable driving experience, making every curve a pleasure to navigate.
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