Scaleauto A424 Hypercar V.3 3DP chassis for RT3 Motor Mount

The 3DP chassis that takes the Scaleauto Alpine A424 to the next level

The SC-9124B07 is the V.3 version of the 3D-printed chassis that Scaleauto has specifically developed for the Alpine A424 Hypercar body. Within the category of 3D chassis spare parts made of fibre and metal for 1/32 scale, this component represents a progressive technical refinement: each version corrects, adjusts, and improves what the previous one did not fully resolve.

Function and performance

This chassis is designed to work in combination with the Scaleauto RT3 motor mount, allowing for precise and repeatable motor positioning. The internal geometry is designed to ensure that the motor-axle assembly operates with minimal friction, reducing mechanical noise and improving power transmission to the rear axle.

The V.3 evolution introduces an enhanced torsional dynamic compared to previous versions: the chassis flexes in a controlled manner in corners, keeping all four wheels in contact with the track without the need for additional suspension adjustments. In endurance races or on circuits with elevation changes, this feature makes a tangible difference in lap time consistency.

Material and manufacturing technology

Manufactured from polyamide using SLS (Selective Laser Sintering) technology, the material offers a combination of lightness and strength that conventional injection-moulded chassis cannot easily replicate. SLS polyamide tolerates repeated torsional stresses well and does not develop structural fatigue with regular club track use.

Unlike FDM printing, the SLS process does not produce visible layers or weak points in the deposition axes, resulting in a more homogeneous and reliable component.

Compatibility and assembly

• Compatible body: Scaleauto Alpine A424 LMDh (1/32 scale).
• Motor mount: exclusively for Scaleauto RT3 support.
• Guide: accepts screw guide with optimised position for braid passage.
• Front axle: height adjustable via M2 Allen screws, allowing load distribution adjustment without special tools.

Assembly is straightforward for those already familiar with the Scaleauto platform. If this is your first chassis of this type, it is advisable to check the alignment of the rear axle with a gauge before finalising the assembly.

Ideal for…

This spare part is designed for club and championship drivers who already have the Scaleauto Alpine A424 body and want to upgrade or replace the chassis with a more mechanically refined version. It is also an interesting option for those building a competition car from scratch and seeking a lightweight, adjustable base designed for the RT3 support.

Points to consider

This chassis does not include the RT3 mount, motor, axles, wheels, or any other components. It is a specific spare part that requires the rest of the mechanical assembly to be available or purchased separately. Ensure that your version of the Alpine A424 body is compatible before placing your order.

Frequently asked questions

Is this chassis compatible with Alpine A424 bodies from other brands?

No. It is specifically designed for the Scaleauto Alpine A424 body in 1/32 scale. The anchor geometry and wheelbase are adjusted to that specific body.

What differences does the V.3 have compared to the V.2 or V.1?

According to Scaleauto, the V.3 introduces an enhanced torsional dynamic and optimised weight distribution. This translates to greater stability in fast corners and more consistent traction on exit compared to previous versions.

Is it mandatory to use the RT3 mount with this chassis?

Yes. The SC-9124B07 chassis is specifically designed for the Scaleauto RT3 motor mount. It is not intended for other mounts in the range.

Is the front axle height adjustment easy to perform?

Yes. It is done using M2 Allen screws, a common tool in the setup of competition slot cars. No modifications or special tools are required.

What type of guide does this chassis accept?

It is prepared for screw guide, with an optimised position that facilitates braid passage and ensures stable contact with the rail.

Is it suitable for use on Sport track?

The chassis itself is compatible with any track system as long as the guide and braids used are suitable for the type of rail you are using. Scaleauto typically works with Sport track.

The Scaleauto SC-9124B07 is the V.3 iteration of the 3D-printed SLS chassis designed for the Alpine A424 LMDh Hypercar body in 1/32 scale. Built for the RT3 motor mount, it delivers improved torsional dynamics, precise front axle height adjustment via M2 Allen screws, and a lightweight polyamide structure that makes it a top choice for slot car club racing and endurance competition. A direct upgrade for Scaleauto Alpine A424 builds seeking consistent lap times and reliable mechanical setup.