Non-friction pinion 11 d 5.5 mm Formula 22 EVO 3

The NSR No Friction Pinion for Formula 22 EVO 3: freer transmission, more speed on track

When tuning a competition slot car, every component of the transmission matters. The NSR No Friction 11-tooth pinion with a 5.5 mm pitch (ref. NSR6711EVO3) is specifically designed for the Formula 22 EVO 3 chassis and offers minimal friction in the pinion-crown gear assembly, which directly translates into a more efficient transmission, less energy loss, and a more responsive reaction to any acceleration changes.

Function and performance

The NSR No Friction technology aims to minimise resistance between the teeth of the pinion and those of the crown gear. In practice, this means:

• Less heat generated in the transmission during long sessions.
• Smoother and more linear acceleration from the corner exit.
• Greater energy efficiency: the motor makes better use of every watt.
• More controlled wear over time.

With 11 teeth and a 5.5 mm pitch, this pinion allows for adjusting the gear ratio along with the chosen crown gear, a key factor for adapting the car to different layouts: technical and slow circuits or fast tracks with long straights.

Compatibility

This pinion is designed for the NSR Formula 22 EVO 3 chassis. Before fitting any pinion, it is advisable to verify that the pitch and number of teeth are compatible with the crown gear installed in the vehicle, as a poor combination can cause play, noise, or premature wear in both parts.

Installation and preparation

Installing a No Friction pinion does not require special tools, but it does require attention to detail:

1. Ensure that the motor shaft is clean and free from lubricant residue or dirt.
2. Carefully place the pinion, checking that it is perfectly aligned with the crown gear.
3. Check the play between pinion and crown: neither too tight (causes friction and heat) nor too loose (causes noise and skipping).
4. NSR recommends moderate use of lubricant on the teeth: a minimal amount is sufficient.

Common mistakes

• Using a pinion with the wrong pitch: the 5.5 mm pitch must match that of the crown gear. Mixing different pitches ruins the transmission.
• Over-tightening the fixing screw: this can damage the shaft or deform the pinion.
• Not checking alignment: a misaligned pinion causes asymmetric wear and noise in corners.

Frequently asked questions

What does "No Friction" mean in NSR pinions?

It is the term NSR uses for its pinions made with a material and surface finish that reduces contact friction between teeth. The result is a more efficient transmission with less energy loss compared to conventional pinions.

Is this pinion compatible with other NSR chassis besides the Formula 22 EVO 3?

This pinion is specified for the Formula 22 EVO 3. It may be compatible with other NSR chassis that use the same pitch (5.5 mm) and type of shaft, but we recommend verifying it with the specific chassis before installation.

How many teeth should the crown gear have to pair well with this 11-tooth pinion?

It depends on the layout and the motor. A longer gear ratio (crown with more teeth) favours fast tracks, while a shorter ratio improves acceleration on technical circuits. NSR offers a wide range of crown gears to find the ideal combination.

How often should the pinion be checked or replaced?

It depends on usage and competition level. In recreational use, a well-installed and lubricated pinion can last many sessions. In intense competition, it is advisable to periodically check the condition of the teeth and replace it if wear or excessive play with the crown gear is observed.

Is it necessary to lubricate No Friction pinions?

Although the No Friction finish reduces friction on its own, a small amount of specific lubricant for slot transmissions helps extend the lifespan of the pinion and crown gear. It is not necessary to overdo it: excess lubricant can attract dust and contaminate other components.

The NSR No Friction pinion 11 teeth 5.5mm for Formula 22 EVO 3 (ref. NSR6711EVO3) is a precision slot car transmission component engineered to minimise friction losses between pinion and crown gear. Ideal for club racing and competitive slot car setups, this pinion ensures efficient power transfer, smoother acceleration, and reduced heat build-up during extended racing sessions. Compatible with NSR Formula 22 EVO 3 chassis, it is a key upgrade for any serious slot car enthusiast looking to optimise their drivetrain performance.