EVO 2 Medium Black Inline Motor Mount

The motor mount that the Mosler Evo 3 needs to perform at its best

The NSR1242 is the Inline EVO 2 motor mount in Medium size and black colour, specifically designed for the NSR Mosler Evo 3 chassis. A spare part and tuning component that, despite its apparent simplicity, has a direct impact on the car's behaviour on track.

Function and performance

The motor mount is the element responsible for securing and positioning the motor within the chassis. In Inline configuration —that is, with the motor longitudinally aligned with the rear axle— the mount determines the motor height and, therefore, the effective gear ratio and the car's centre of gravity.

The NSR EVO 2 range is designed to offer greater rigidity and mounting precision compared to previous generations, minimising play that can translate into power loss or erratic behaviour. The Medium version defines the distance between the motor pinion and the crown gear, being the intermediate size within the range: a balanced option for most standard configurations of the Mosler Evo 3.

Compatibility

• Chassis: NSR Mosler Evo 3
• Motor configuration: Inline (longitudinal motor, aligned with the rear axle)
• Size: Medium

If you are using a chassis other than the Mosler Evo 3, please check compatibility with NSR before purchasing this reference, as each chassis may require a different support geometry.

Assembly and preparation

The assembly of this mount does not require special tools, although, as with any slot preparation work, it is recommended to thoroughly clean the fitting area and ensure that no lubricant residue remains on the contact surfaces. A correct fitting ensures that the motor has no lateral play, resulting in more efficient transmission and a more predictable response in corners.

If you are changing the mount size to adjust the mesh —the play between the pinion and crown gear— remember that the medium size is the recommended starting point by NSR for most motors in the range.

Common mistakes

• Confusing the size: NSR offers several sizes in the EVO 2 range. Ensure that the reference number corresponds to the Medium size (NSR1242) and not to the Short or Extra Long.
• Forcing the fit: If the mount does not fit smoothly, check the orientation before pressing. Forcing it can damage both the mount and the chassis.
• Ignoring the mesh: A well-mounted support does not guarantee a correct mesh by itself. Always check the play between the pinion and crown gear after assembly.

Frequently asked questions

Which chassis is the NSR1242 compatible with?

The NSR1242 mount is specifically designed for the NSR Mosler Evo 3 chassis in Inline configuration. Its compatibility with other NSR chassis is not guaranteed without prior verification.

What does "Medium" size mean in EVO 2 mounts?

The size refers to the distance separating the motor shaft from the rear axle. The Medium version is the intermediate size in the EVO 2 range, suitable for the standard configuration with the most common crown gears and pinions of the Mosler Evo 3.

Can I use this mount with any Inline motor?

The mount is designed to accommodate the usual motors that NSR recommends for the Mosler Evo 3 in Inline configuration. Check the specific compatibility of the motor you intend to install before making the change.

Is it necessary to change the mount if I change the pinion or crown gear?

Not necessarily, but it may be advisable. When changing the gear ratio, the mesh (play between pinion and crown gear) may vary, and in some cases, adjusting the mount size is the cleanest way to achieve optimal mesh.

Is it sold in individual units?

Yes, the NSR1242 is sold as an individual unit.

The NSR1242 is the Medium Black Inline EVO 2 motor mount, specifically designed for the NSR Mosler Evo 3 chassis. This slot car spare part ensures precise motor alignment in inline configuration, directly impacting transmission efficiency and lap times. A key tuning component for competitive slot racing and NSR Mosler enthusiasts looking to optimize their setup.