AW Rt4 Adjustable Motor Mount

The Scaleauto Adjustable Anglewinder Motor Mount RT-4: Precision and Flexibility for Your Setup

The Adjustable AW RT-4 Motor Mount (reference SC-6531) from Scaleauto is a preparation piece designed to mount the motor in an Anglewinder configuration — that is, with the motor positioned at an angle to the rear axle — with an offset of -0.75 mm. The incorporation of an adjustable rear bearing support with spherical bearings allows for fine-tuning the alignment of the drivetrain with a precision that makes a difference in competition.

Main Features

• Anglewinder Configuration: motor angled relative to the rear axle, combining compactness and mass distribution.
• -0.75 mm Offset: allows for adjusting the motor position to optimise the engagement between pinion and crown gear.
• Adjustable Rear Support: facilitates tuning of the assembly without the need to change complete parts.
• Spherical Bearings: reduce lateral play and absorb minor misalignments, contributing to smoother and more durable transmission.
• Compatibility: designed for Scaleauto cars, particularly for the GT RT-4 platform.

Function and Performance

In slot car preparation, the motor mount is one of the elements that most influences the final behaviour of the car. A rigid yet properly aligned mount reduces vibrations, improves power transmission to the rear axle, and prolongs the lifespan of both the motor and the pinions and crown gears. The offset adjustment allows for compensating small variations in mounting or in the chosen pinion and crown gear combination, without the need for shims or makeshift solutions.

The spherical bearings of the rear support are particularly useful on tracks with irregularities or when the chassis works in flex: they absorb stresses without transmitting them directly to the axle, preventing premature wear and maintaining engagement in optimal conditions for longer.

Installation and Setup

The installation of this mount follows the usual procedures in the preparation of Scaleauto GT cars. We recommend checking the backlash between the pinion and crown gear once installed, taking advantage of the adjustment offered by the adjustable mount to achieve the optimal point: sufficient clearance to avoid locking, but not so much that it generates noise or loss of efficiency. The spherical bearings should be well seated and free of dirt before the final closure.

Ideal for…

This mount is aimed at drivers and preparers who compete with Scaleauto GT cars in RT-4 format and seek a finer tuning of the drivetrain. It is also a good option for those who have noticed irregular wear on pinion or crown gear and want to rule out alignment issues before investing in more parts.

Frequently Asked Questions

What does the -0.75 mm offset mean in this mount?

The offset indicates the lateral displacement of the motor relative to the reference position. A value of -0.75 mm allows for adjusting the engagement between the motor pinion and the rear axle crown gear, compensating for mounting differences or specific transmission combinations.

What advantage do spherical bearings offer over conventional bearings in the rear support?

Spherical bearings tolerate small angular misalignments without generating additional stresses on the axle. This is especially useful in chassis that flex during the race, as they reduce wear and keep the transmission quieter and more efficient.

Is it compatible with all Scaleauto cars?

It is specifically designed for the Scaleauto GT RT-4 platform. Before purchasing it for another model from the brand, it is advisable to verify compatibility with your car's chassis and motor configuration.

Can this mount be used in Inline or Sidewinder configuration?

No. This mount is designed exclusively for Anglewinder configuration, with the motor positioned at an angle to the rear axle. It is not interchangeable with Inline (motor in line with the axle) or Sidewinder (motor parallel to the axle) mounts.

What tools do I need to install it?

The installation does not require special tools beyond the usual ones in slot preparation: precision screwdrivers and, optionally, a backlash gauge to check the transmission play once installed.

The Scaleauto SC-6531 adjustable anglewinder motor mount for the RT-4 GT platform offers a -0.75 mm offset and a rear adjustable bearing support with spherical bearings, delivering precise drivetrain alignment for club racing and competitive slot car preparation. Compatible with Scaleauto GT RT-4 chassis.