Axle 2.38 (3/32) Steel 60mm

The BRM steel axle 2.38 mm: precision from the first millimetre

When the transmission of a 1/24 slot car starts to show signs of wear, the axle is one of the first components to check. The BRM-S107C is a steel axle with a 2.38 mm diameter (equivalent to the imperial measurement 3/32) and 60 mm in length, manufactured by BRM with the level of quality that characterises its competition spare parts.

Function and performance

The axle is the element on which the wheels rotate and transmits the motor's power to the track. A bent, worn, or excessively loose axle directly results in vibrations, loss of traction, and irregular behaviour in corners. Replacing it with a new and straight component like this one immediately restores rolling precision.

• Diameter: 2.38 mm (3/32)
• Length: 60 mm
• Material: steel
• Brand: BRM
• Reference: BRM-S107C

Compatibility and installation

This axle conforms to the widely used 3/32 diameter standard in the 1/24 scale. It is the reference format in BRM models of that scale, although it is always advisable to verify the length required by your chassis before installation. It works in combination with bearings of the same inner diameter to ensure smooth and play-free rotation.

Installation and preparation

To achieve the best results, ensure that the chassis supports where the axle sits are in good condition and aligned. A perfectly straight axle mounted on worn or misaligned bearings will not deliver the expected performance. In competition setups, it is common to check the concentricity of the axle with a dial gauge before securing the wheels.

Common mistakes

• Reusing a visibly bent axle hoping to correct it during installation: if it is bent, it must be replaced.
• Installing the axle without lubricating the bearings: although minimal, a drop of low-viscosity oil on each end makes a difference in rolling.
• Confusing the 3/32 (2.38 mm) diameter with the 1/8 (3.17 mm): they are incompatible with the same bearings or wheels.

Frequently asked questions

What scale is this axle designed for?

It is designed for 1/24 scale slot cars, which is the standard scale for the BRM models to which this spare part belongs.

What is the difference between a 2.38 mm (3/32) axle and a 3.17 mm (1/8) axle?

They are two distinct and incompatible diameter standards. The wheels, bearings, and pinions of each system are designed for their specific diameter. Before ordering, check what diameter your chassis uses.

Can I use this axle with bearings from other brands?

Yes, as long as the inner diameter of the bearing is 3/32 (2.38 mm) and the quality of finish is compatible. It is advisable to use bearings from the same manufacturer or from leading brands in the 1/24 segment.

How do I know if my axle is bent?

Roll it on a flat glass surface: any wobble or irregular contact point indicates that it is bent and needs to be replaced. In a workshop, the most precise method is using a dial gauge.

How often should I check or change the axle?

It depends on usage and whether the car has suffered impacts. In competition, it is good practice to check it at the start of each season or after any significant accident. For recreational use, periodic inspection is sufficient.

The BRM-S107C is a 2.38 mm (3/32) steel axle, 60 mm long, designed for 1/24 scale slot cars. A precision replacement part for axles and bearings, essential for keeping your BRM slot car running smoothly on track. Compatible with standard 3/32 bearings and wheels in the 1/24 slot racing segment.