Medium hardness suspension spring - short ø medium

The spring that makes a difference in your 1/32 chassis setup

When tuning a chassis for 1/32 slot cars, suspension springs are one of the elements that most influence the behaviour of the setup. The reference TT925 from Tectime offers medium hardness in a short format and medium diameter, a combination especially valued by tuners seeking a balance between grip and dynamic response without falling into extremes of stiffness or softness.

Function and characteristics of the TT925 spring

• Medium hardness: balance between absorbing track irregularities and response firmness, suitable for varied circuits.
• Short format: designed for setups with limited suspension travel, common in compact 1/32 chassis.
• Medium diameter: compatibility with the most common standard housings in chassis of this scale.
• Bag of 4 units: sufficient to equip a complete chassis and have some spare units for the tuning bench.

Application and installation in chassis

Medium hardness suspension springs are a common choice as a starting point in tuning: they allow for evaluating the base behaviour of the car and, from there, deciding if more stiffness or more softness is needed. In rear-wheel drive chassis with standard geometry, medium hardness provides a balance that works well on both plastic and wooden tracks.

For installation, it is advisable to verify that the medium diameter of the TT925 fits correctly in your chassis housing before compressing. A poorly fitted spring in diameter can generate irregular preload or work eccentrically, reducing the effectiveness of the setup.

Common mistakes when selecting suspension springs

• Mixing springs of different hardness on the same axle unintentionally: generates asymmetry in behaviour.
• Assuming that more hardness always means more speed; on tracks with many bumps or pronounced joints, a spring that is too stiff can cause loss of contact with the rail.
• Not checking the format (short/long) before installation: a long spring in a housing designed for short format can block the chassis movement.

Frequently asked questions

How many units are included in the TT925 bag?

The bag includes 4 units, sufficient to assemble a complete chassis and have spare units for the workshop.

What scale is this spring designed for?

It is designed for slot car chassis in 1/32 scale, the most widespread in club competition and recreational use.

What is the difference between a short spring and a long one?

The short format is designed for chassis with limited suspension travel. Using a spring of incorrect length can block movement or leave the system without preload.

When to choose medium hardness over soft or hard?

Medium hardness is a good starting point: it absorbs irregularities without losing firmness. If the track is very smooth and fast, it may be beneficial to move up to hard; if it has many imperfections or bumps, soft may be more suitable.

Can the TT925 be combined with springs of another hardness on the same car?

Technically yes, although mixing hardness on the same axle without criteria can generate asymmetrical behaviours. As a general rule, it is recommended to first test with springs of the same hardness on both sides and adjust based on the results.

The Tectime TT925 is a medium-hardness short suspension spring with a medium diameter, supplied in a bag of 4 units. Designed for 1/32 scale slot car chassis setup, it offers a balanced starting point for club racers and hobby enthusiasts looking to fine-tune their car's suspension behaviour on both plastic and wooden tracks.