Grey 12z sidewinder plastic pinions

NSR Nylon Pinions for Sidewinder: 12 Teeth, 6.75 mm, Pack of 4 Units

When it comes to keeping the transmission in perfect condition, the quality of the pinion makes a difference. These plastic pinions from NSR (reference NSR7212) are made of nylon and specifically designed for sidewinder setups, where the motor is positioned parallel to the rear axle. With 12 teeth and a diameter of 6.75 mm, they provide smooth and consistent engagement with the crown gear, extending the lifespan of both components.

Main Features

• Number of Teeth: 12z
• Diameter: 6.75 mm
• Material: Nylon (technical plastic)
• Configuration: Sidewinder
• Pack Contents: 4 units
• Reference: NSR7212

Function and Performance

The pinion is the link between the motor and the crown gear, and its condition directly influences the smoothness of the transmission and the efficiency of the mechanical assembly. Nylon offers a good balance between wear resistance and noise dampening, which is particularly appreciated during long running sessions or in clubs where the car operates continuously.

With 12 teeth, this pinion allows for standard gear ratios when combined with the usual crowns available in the NSR market, providing a solid starting point for both recreational use and club competition preparations.

Compatibility and Installation

These pinions are designed for sidewinder setups in slot cars equipped with standard axle motors. The pack includes 4 units, allowing for immediate spare parts availability or distribution among different chassis without the need for frequent new orders.

Before installation, it is advisable to check that the alignment between the pinion and the crown gear is correct and that the lateral play adheres to standard recommendations: neither too tight — which would cause rubbing and heat — nor too loose, which would lead to rattling and uneven wear.

Common Mistakes

• Installing the pinion without checking the axial alignment with the crown gear: this causes premature wear on the tooth flanks.
• Forcing the pinion onto the axle without respecting the recommended fit, which can lead to cracks in the nylon.
• Confusing sidewinder pinions with inline or anglewinder ones: although they may look similar visually, the gear ratio and positioning are different.

Ideal for…

Enthusiasts and club competitors looking for a reliable transmission spare part for their sidewinder setups. The pack of 4 units is particularly useful if you manage multiple cars or participate in championships where regular inspection of the transmission system is part of the usual preparation.

Frequently Asked Questions

How many units are included in the pack?

The NSR7212 pack includes 4 plastic pinions with 12 teeth.

What motor configuration does this pinion require?

It is designed for sidewinder setups, where the motor is positioned parallel to the rear axle of the car.

What material are they made of?

They are made of nylon, a technical plastic that combines wear resistance with quieter transmission compared to metal pinions.

Which crowns are they compatible with?

They are compatible with the standard crowns of the NSR system for sidewinder configuration. Check the desired gear ratio before choosing the crown to combine it correctly.

How often should I check or change the pinion?

It depends on usage. In club racing, it is advisable to check it after each intense session. If you detect excessive play in the engagement or visible wear on the teeth, it is time to replace it.

NSR plastic pinions 12 teeth sidewinder configuration, made of nylon, 6.75 mm diameter, pack of 4 units. Reference NSR7212. Essential slot car spare part for sidewinder motor setup, compatible with standard NSR transmission systems. Reliable and quiet gear engagement for club racing and recreational slot car use.