PINIONS 12 SIDEW Extralight

NSR 12 Tooth Extralight Pinions Sidewinder: Agile and Precise Transmission for Competition Slot Cars

When fine-tuning the drivetrain of a slot car, every gram and every tenth of a millimetre counts. The NSR Extralight 12-tooth pinions (reference NSR6912) are specifically designed for Sidewinder configurations, meaning for setups where the motor is positioned parallel to the rear axle. Their main advantage is the reduction of rotating mass, resulting in a more immediate response when accelerating and less inertia when braking.

Main Features

• Number of teeth: 12
• Configuration: Sidewinder (motor parallel to the rear axle)
• Version: Extralight, with reduced rotating mass compared to standard pinions
• Reference: NSR6912
• Manufacturer: NSR

Function and Performance

The number of teeth on the pinion directly determines the gear ratio along with the crown gear. With 12 teeth, we achieve a longer ratio compared to pinions with fewer teeth, allowing for higher top speeds on fast sections, provided the motor has sufficient torque. The Extralight version minimises the mass of the pinion, favouring acceleration and improving the energy efficiency of the powertrain. In racing, this is particularly noticeable in chicanes and slow corners, where the car's response to the throttle needs to be almost instantaneous.

Compatibility and Installation

These pinions are designed for Sidewinder installations on NSR chassis. Before installation, it is essential to verify that the pinion's module matches that of the crown gear installed in the car, as well as ensuring that the motor shaft diameter is correct for the pinion fit. NSR offers a wide range of complementary spare parts — crown gears, axles, and chassis — that allow for precise drivetrain configuration.

Usage Recommendations

To make the most of the Extralight pinions, it is advisable to pay attention to the following points:

• Check the fit of the pinion on the motor shaft: neither overly tight nor with play that causes vibration.
• Ensure the distance between pinion and crown gear guarantees a clean engagement without rubbing.
• Lightly lubricate the gear with a specific slot lubricant, without overdoing it to avoid attracting dirt.
• Combine with NSR crown gears of the appropriate module to maximise mass reduction benefits.

Ideal for…

This pinion is a common choice among those preparing cars for club or championship competition, as well as among enthusiasts who enjoy fine-tuning their setups to the last detail. If your chassis has a Sidewinder configuration and you aim to extract every tenth, the NSR Extralight is a direct and effective upgrade over heavier pinions.

Frequently Asked Questions

What is the difference between an Extralight pinion and a standard one?

The difference lies in the mass: the Extralight weighs less, which reduces rotating inertia. In practice, the car responds more agilely when accelerating and brakes more effectively, especially on technical circuits with many corners.

What is a Sidewinder configuration?

In a slot car with a Sidewinder configuration, the motor is mounted parallel to the rear axle, that is, transversely to the chassis. The pinion transmits movement directly to the crown gear of the axle. It is one of the most popular configurations in competition slot racing due to its simplicity and versatility.

Which crown gears should I combine with this pinion?

You should use an NSR crown gear of the same module as the pinion. NSR offers several options for the number of teeth in their crown gears, allowing you to adjust the gear ratio according to the circuit and motor characteristics. Check the NSR catalogue to ensure compatibility.

Can I mount this pinion on an Anglewinder or Inline chassis?

This pinion is specifically designed for Sidewinder configurations. Although the tooth may be mechanically compatible, the geometry and positioning of the drivetrain in Anglewinder or Inline setups are different, so NSR has specific references for each type of installation.

How many pinions are included in the NSR6912 pack?

The available information does not specify the exact number of units per pack. We recommend checking it directly on the product sheet or contacting our team.

The NSR6912 is a 12-tooth Extralight pinion gear designed for Sidewinder motor configurations in 1/32 scale slot car racing. Its reduced mass improves acceleration response and overall drivetrain efficiency, making it a popular choice among club racers and performance-focused hobbyists. Compatible with NSR chassis and NSR crown gears, this pinion is a straightforward upgrade for those looking to fine-tune their slot car transmission setup.

Information Not Found

The exact number of units included in the NSR6912 pack and the specific module of the pinion could not be confirmed. It is recommended to consult the official NSR documentation or contact the Ministry of Hobby team to resolve this before purchase.