LBH Supertrofeo Evo2 Medium Grey chassis

Scaleauto SC-6686B Replacement Chassis: Medium Torsion for the LBH Super Trofeo Evo2

Within the Scaleauto 1/32 spare parts catalogue, plastic chassis for the Lamborghini Huracán Super Trofeo Evo2 are offered in different hardness levels identified by colour. This SC-6686B corresponds to the medium, grey version, designed to find that balance between the flexibility needed for a track with irregularities and the rigidity required for high-paced racing.

Function and Performance

The hardness of the chassis directly influences how the car's geometry works during driving. A medium chassis like this allows for controlled torsion: the structure yields just enough for all four tyres to maintain contact with the track in sections with elevation changes or in linked corners, without reaching the excessive softness that would compromise precision on straights or during braking.

This grey version is the most common choice for tracks with medium-high grip, where a soft chassis could generate unwanted lateral movement and a hard one would cause bounces that reduce traction on corner exits. The SC-6686B starts from a neutral and adjustable base, making it the ideal starting point for both drivers beginning to set up their car and those already familiar with the model.

Compatibility

This chassis is specific to the Scaleauto models from the LBH (Lamborghini Huracán) Super Trofeo Evo2 family in 1/32 scale. It directly replaces the factory original chassis and is designed to respect the body mounting points, motor mount, and front axle specific to that reference. Before acquiring a specific hardness, it is advisable to check which version (soft, medium, or hard) the standard model incorporates, to know exactly in which direction to adjust the car's behaviour.

Assembly and Preparation

The replacement process is straightforward: the body is removed, the components from the original chassis — motor mount, front axle, guide, and braids — are taken off and transferred to the new chassis. Scaleauto maintains compatibility with standard allen screws at the front axle adjustment points, so no additional parts need to be modified. Once assembled, it is advisable to check the alignment of the rear axle and the height of the guide before running, especially if the diameter of the wheels or the type of braids has been changed.

Common Mistakes

• Confusing hardness by colour across different generations: the colour code may vary between Scaleauto product families. Always check the exact reference (SC-6686B) to ensure it corresponds to the medium hardness of the LBH Evo2.
• Over-tightening the motor mount screws: excessive tightening nullifies the motor's pivoting and eliminates the beneficial effect of the medium torsion of the chassis.
• Not checking the geometry after the change: even when replacing with the same chassis, small moulding differences can alter the guide height or the parallelism of the front axle. Always check this with the car on the track before the first timed session.

Frequently Asked Questions

What is the difference between the soft, medium, and hard chassis for the LBH Evo2?

The difference lies in the rigidity of the plastic and, therefore, in the amount of torsion the structure can accommodate. The soft allows for more flex and is more tolerant of uneven or low-grip tracks. The hard barely yields and is ideal for very smooth and fast tracks where maximum precision is sought. The medium (this SC-6686B, grey) is the intermediate point: versatile and stable in most club conditions.

Can I use this chassis on Scalextric track or only on Sport track?

The chassis itself is compatible with both systems, as the difference between tracks mainly affects the guide and braids, not the chassis structure. However, Scaleauto works with Sport track (Scaleauto, Slot.it) as a reference, so it may be necessary to adjust the guide if used regularly on universal track (Scalextric, Ninco).

Does it include any additional components or is only the chassis sold?

The SC-6686B is sold solely as the plastic chassis, without motor, mount, axle, wheels, tyres, guide, or braids. All components must be transferred from the original chassis or purchased separately.

What level of driver is this medium chassis indicated for?

It is a valid option for both those starting in car preparation and experienced club drivers. Its neutral behaviour allows for easy detection of what additional adjustment the car needs, making it a clear starting point before deciding if more or less rigidity is required.

How often should the chassis be checked or replaced?

There is no fixed interval, but it is advisable to inspect the chassis after impacts or falls, as the plastic may suffer micro-cracks that alter its behaviour without being visible to the naked eye. If the car starts to show irregular behaviour that cannot be corrected with adjustments, checking the condition of the chassis is the first step.

The Scaleauto SC-6686B is a medium-hardness grey plastic chassis designed specifically for the Lamborghini Huracán Super Trofeo Evo2 in 1/32 scale slot car racing. Ideal for club competition on Sport track systems, it provides a balanced torsion profile suited to medium-to-high grip conditions. A key spare part for any slot car builder looking to fine-tune their GT3 setup with Scaleauto replacement parts.