PINIONS 9 INLINE Extralight

NSR 9 Tooth Inline Extralight Pinions: Less Weight, More Response

When it comes to tuning a slot car for competition, the drivetrain is one of the areas that offers the most room for improvement. The NSR Extralight pinions with reference NSR6809 are specifically designed for Inline setups — that is, motors oriented longitudinally with respect to the rear axle — and feature 9 teeth with a low inertia construction that translates into quicker acceleration and less energy loss on each corner exit.

Function and Performance

The Extralight concept from NSR is not just a label: it implies a real reduction in rotating mass within the drivetrain. By decreasing the inertia of the pinion, the motor responds more quickly to the controller's signal changes, which is particularly noticeable on technical circuits with many tight corners and rhythm changes. With 9 teeth, this pinion fits into shorter gear ratio combinations, suitable for circuits with many bends or medium-short tracks where acceleration is more important than top speed.

Compatibility and Installation

These pinions are designed for motors in the Inline position: the motor is aligned with the rear axle (longitudinally), which is common in many competition chassis from NSR and other brands. Before installation, it is advisable to check that the motor shaft diameter is compatible with the selected pinion. NSR offers several versions depending on the motor shaft diameter, so it is recommended to consult your motor specifications before placing an order.

• Teeth: 9
• Configuration: Inline
• Construction: Extralight (low inertia)
• Reference: NSR6809

Installation and Preparation

For optimal performance, it is important to ensure that the pinion is properly aligned with the crown gear. Any misalignment, even if minimal, can cause noise, vibration, and premature wear of both parts. Use a pinion aligner if possible, and apply a very small amount of specific slot transmission lubricant to the contact teeth. Avoid excess: leftover lubricant can contaminate the tyres and affect traction.

NSR recommends periodically checking the condition of the Extralight pinions during intensive use sessions, as the lightweight material may imply a slightly shorter lifespan compared to standard versions if used continuously in demanding competition.

Ideal for…

This pinion is aimed at enthusiasts who prepare their cars with a competitive mindset and have a good understanding of their model's drivetrain. If you are building or tuning a car for club championships or simply want to maximise the performance of your Inline setup, the NSR Extralight pinions are a direct and effective upgrade over heavier components.

Frequently Asked Questions

What is the difference between an Inline pinion and one for Sidewinder?

The motor position determines the drivetrain axis. In an Inline setup, the motor is oriented longitudinally (in line with the rear axle), whereas in Sidewinder it is placed transversely. Each configuration requires specific pinions according to the motor output shaft. The NSR6809 is exclusively designed for the Inline configuration.

What advantage does the Extralight construction offer over a conventional pinion?

Less rotating mass means lower inertia. The motor requires less effort to accelerate the pinion, resulting in quicker response and lower energy consumption. On tracks with many curves, the difference in exit acceleration is noticeable.

Which crown gears is this 9-tooth pinion compatible with?

Compatibility depends on the tooth module (pitch). NSR uses a standard module in its range of transmissions. To ensure proper meshing, always use NSR crown gears of the same module. Mixing parts of different pitches can lead to poor meshing and accelerated wear.

How many pinions are included in the NSR6809 pack?

The available information does not specify the exact number of units per blister. We recommend checking the packaging description in the datasheet or contacting our team to confirm before placing your order.

Do I need special tools to install it?

It is not essential, but it is advisable. A pinion puller and an aligner greatly facilitate the installation and ensure that the part is correctly centred and aligned with the crown gear, avoiding vibrations and premature wear.

NSR pinion 9 teeth Inline Extralight (NSR6809) — lightweight slot car pinion for inline motor setups, designed to reduce rotational mass and improve acceleration response. Compatible with NSR inline motor configurations, ideal for club racing and performance tuning. A direct upgrade for competitive slot car enthusiasts looking to fine-tune their drivetrain.

Unconfirmed Information

It has not been possible to verify with official sources the exact number of units included per blister in the reference NSR6809, nor the exact shaft diameter for which this pinion is calibrated. If you need this data before placing your order, our team can assist you in confirming it.