28t 16.8mm Crown Gear Anglewinder

The NSR6528 Crown Gear: 28 Precision Teeth for Your Anglewinder Setup

When tuning a slot transmission, every tooth counts. The NSR6528 is a 28-tooth crown gear with a 16.8 mm diameter specifically developed for 15° anglewinder configurations, the characteristic angle of NSR cars with this motorisation system. Manufactured to the tolerance standards that distinguish NSR, it ensures a clean, quiet, and durable engagement with the brand's pinions.

Technical Features

• Reference: NSR6528
• Number of Teeth: 28
• Diameter: 16.8 mm
• Configuration: Anglewinder 15°
• Recommended Pinions: NSR 71XX series with a diameter of 7.5 mm
• Manufacturer: NSR

What is the Anglewinder Configuration and Why Does it Matter?

In an anglewinder setup, the motor is positioned at an angle to the rear axle (unlike the sidewinder, which is parallel, or the inline, which is longitudinal). This arrangement allows for a more favourable weight distribution in the chassis, maintaining a good centre of gravity without sacrificing mechanical accessibility. The 15° angle used by NSR in its designs is the result of years of development aimed at both club competition and high-performance recreational use.

For this system to function correctly, the crown gear must be designed with the appropriate tooth angle. Fitting a sidewinder crown gear onto an anglewinder chassis generates noise, vibrations, and premature wear. The NSR6528 precisely avoids that problem.

Compatibility and Pairing with Pinions

NSR recommends pairing this crown gear with pinions from its 71XX series, which have a diameter of 7.5 mm. The resulting gear ratio will depend on the number of teeth of the chosen pinion, allowing for adjustments in the car's response according to the type of track: greater acceleration on twisty layouts or higher top speed on ovals and fast tracks.

The crown gear is designed for NSR cars that use anglewinder chassis. Before purchasing, verify that your vehicle indeed uses this motorisation system.

Installation and Preparation

Proper adjustment of the crown gear is essential for the performance and durability of the transmission. Some practical tips:

• Always check the lateral play between the crown gear and pinion before securing the motor position.
• Use an alignment tool to ensure that the crown gear and pinion are in the same plane.
• Apply a minimal amount of specific slot gear lubricant; excess attracts dirt.
• Periodically check for wear, especially after intensive racing sessions.

Frequently Asked Questions

Can I use this crown gear in a sidewinder setup?

No. The NSR6528 is specifically designed for 15° anglewinder configurations. Using it in a sidewinder setup would result in poor engagement, noise, and premature tooth wear.

Which pinions are compatible with the NSR6528?

NSR recommends pinions from its 71XX series, with a diameter of 7.5 mm. The choice of the number of teeth on the pinion will determine the final gear ratio.

How does the number of teeth on the crown gear affect the car's behaviour?

A greater number of teeth on the crown gear (while keeping the same pinion) results in higher top speed but less acceleration. With 28 teeth, the NSR6528 offers a balance between both parameters, although fine-tuning will always depend on the paired pinion.

Is it necessary to lubricate the crown gear?

Yes, a small amount of specific slot gear lubricant extends the lifespan of the crown gear and pinion and reduces noise. Avoid excess: it can stain the track or attract dust.

How often should I check the condition of the crown gear?

It depends on usage. In regular competition, a visual inspection after each session is advisable. In recreational use, it is sufficient to check it when you notice changes in sound or acceleration response from the car.

The NSR6528 is a 28-tooth anglewinder crown gear (16.8 mm diameter, 15° angle) designed for NSR slot cars. Compatible with NSR 71XX pinions (7.5 mm diameter), it delivers smooth and precise power transmission for both club racing and recreational use. A reliable upgrade or replacement part for any NSR anglewinder build.