Soft suspension spring - short ø medium

Precise Tuning: The Right Spring Makes a Difference on Track

In the preparation of a competitive slot car, few details influence performance as much as the correct choice of suspension spring. The TT905 from Tectime combines soft hardness, short length, and medium diameter: a very specific combination that addresses concrete tuning needs and should not be confused with other references in the catalogue.

Features of the TT905 Spring

• Hardness: soft — favours greater absorption of irregularities and a smoother response from the chassis.
• Length: short — limits the suspension travel, providing greater precision in support.
• Diameter: medium — fits standard housings of most chassis with adjustable suspension.
• Reference: TT905 (Tectime).

Function and Performance

A soft spring allows the chassis to work more freely on the track, which can translate into better tyre contact on sections with irregularities or cambers. Being short in length, the travel is restricted, avoiding excessive movement that could penalise stability in fast corners. It is a combination widely used in setups that seek grip without sacrificing response.

Compatibility and Installation

This type of spring is designed for slot chassis that incorporate adjustable suspension systems using interchangeable springs. Before installation, check that the medium diameter of the TT905 matches the housing of your chassis, as Tectime offers different diameters in its catalogue. The combination of hardness and length should always be chosen based on the circuit, the type of tyre, and the weight of the car.

Common Mistakes When Choosing Springs

• Confusing hardness with length: a short spring is not necessarily harder and vice versa.
• Using an incorrect diameter: a spring that does not fit well in the housing may work irregularly or come out during the race.
• Not testing combinations: suspension tuning requires track testing. A soft spring may be ideal on a technical circuit and detrimental on a high-speed one.

Ideal For…

Preparers and drivers who work on the fine tuning of their slot cars, especially on circuits with uneven track surfaces, variable grip conditions, or when seeking to maximise tyre contact without losing chassis control. It is also useful for experimenting with different suspension setups in an organised manner, combining springs of different hardness and length on the various axles.

Frequently Asked Questions

What is the difference between a soft and a hard spring in slot racing?

A soft spring allows greater movement of the chassis and better absorbs track imperfections, improving tyre contact. A hard spring limits that movement, providing more stiffness and stability, but may lose grip on uneven surfaces. The choice depends on the circuit and the behaviour you are looking for.

How do I know if the medium diameter of the TT905 is compatible with my chassis?

Check the specifications from your chassis manufacturer or compare the diameter of the spring housing with the dimensions of the TT905. If you already have other Tectime springs installed, look for the reference that indicates "ø medium" to ensure it is the same diameter.

Can I combine springs of different hardness on the same car?

Yes, it is a common practice in advanced preparation. For example, installing a softer spring on the guide and a harder one on the rear, or vice versa, to adjust the chassis balance. It requires track testing to find the optimal setup.

How often should I check or change the suspension springs?

Springs can fatigue with use, especially in intense competition. It is advisable to check them periodically and replace them if you notice that the chassis has lost response or the spring shows visible deformations.

The Tectime TT905 is a soft, short, medium-diameter suspension spring designed for adjustable slot car chassis setups. Whether you're fine-tuning grip on a technical circuit or experimenting with spring combinations, this spring offers a precise starting point for serious slot car preparation. Compatible with slot chassis featuring interchangeable spring systems, it's a key component for club racers and hobbyists focused on chassis dynamics and handling balance.