SideWinder motor mount

The mount that makes a difference in your SideWinder setup

The NSR1271 is the soft blue motor mount from NSR, specifically designed for the sidewinder configuration — with the motor positioned parallel to the rear axle — in the Classic and Abarth 500 chassis. A small part with a direct and measurable impact on the car's behaviour on track.

Function and performance

The motor mount is the element that secures and dampens the power unit within the chassis. In a sidewinder configuration, the proper securing of the motor directly influences the power transmission to the rear axle, the stability of the crown gear-pinion, and the response to sudden acceleration or braking changes.

The soft version of this mount, identified by its blue colour, offers greater flexibility than the hard versions. This translates into a more progressive absorption of motor vibrations and greater adaptability of the rear end to track irregularities, especially useful on circuits with less uniform surfaces or in smoother driving styles.

Compatibility

• NSR Classic chassis
• NSR Abarth 500 chassis
• Motor configuration: sidewinder (motor parallel to the rear axle)

Installation and preparation

The installation is straightforward and does not require special tools, although it is advisable to check that the mount is properly seated before closing the chassis. A poorly positioned mount can cause play in the pinion-crown and negatively affect the wear of both parts and the efficiency of the transmission.

If you are looking for a more predictable and smooth behaviour, the soft version is the usual choice for club tracks or recreational use. For more aggressive competition or circuits with higher grip, it may be interesting to compare with the hard version and assess which one suits your setup better.

Common mistakes

• Confusing hardness with quality: neither the soft nor the hard version is "better" in absolute terms; each responds to a type of track and driving style.
• Not checking the crown-pinion play: after changing the mount, always check the backlash to ensure that the transmission operates at its optimal point.
• Ignoring wear: soft mounts tend to wear out faster than hard ones in very intensive use. It is advisable to have a spare if you compete regularly.

Frequently asked questions

What is the difference between the soft (blue) and hard NSR mount?

The hardness of the mount determines how much flexibility the power unit has within the chassis. The soft (blue) absorbs vibrations better and offers a smoother and more progressive drive. The hard transmits power more directly and is preferred in competition setups with high-grip tracks.

Is it compatible with all NSR sidewinder chassis?

The NSR1271 is specifically designed for the Classic and Abarth 500 chassis in sidewinder configuration. For other NSR chassis, please consult the specific corresponding reference.

Can I use it in inline or anglewinder configuration?

No. This mount is designed for the sidewinder configuration, where the motor is mounted parallel to the rear axle. For inline or anglewinder, there are specific mounts with different geometry.

How often should I check or replace the mount?

It depends on usage. In frequent club sessions or competition, it is worth inspecting it regularly for deformations or excessive play. A worn mount affects the crown-pinion play and reduces the efficiency of the transmission.

Is any special tool required for installation?

No. The installation is simple and straightforward. However, we recommend checking the transmission backlash after any replacement to ensure everything is properly adjusted.

The NSR1271 is a soft blue motor mount designed for sidewinder configurations on NSR Classic and Abarth 500 chassis. A key spare part for slot car tuning, offering smooth vibration damping and reliable power transmission. Compatible with NSR sidewinder setups, ideal for club racing and recreational driving on Scalextric, Ninco, Scaleauto and other track systems.