10z pinions "Easy Setup" line

NSR Easy Setup 10-tooth pinions: tuned transmission from the first lap

The Easy Setup line from NSR was born with a clear idea: to facilitate transmission tuning without unnecessary complications. These 10-tooth pinions with a 5.5 mm diameter are part of that system, designed for tuners and drivers to quickly and consistently find the optimal gear ratio. Each pack includes 2 units.

Function and performance

The pinion is the component that transmits the motor's rotation to the crown gear and, consequently, to the rear wheels. With 10 teeth, this pinion offers a longer gear ratio than pinions with fewer teeth, resulting in higher top speed with the same crown gear. It is a common choice on fast tracks or those with long straights, where the motor can develop its power without the transmission limiting it.

The 5.5 mm diameter determines the compatible axle: it is advisable to check that it matches your motor's axle before installation.

Compatibility

These pinions are designed to integrate into the NSR Easy Setup system. As a general rule in competitive slot racing, before installing a pinion, it is necessary to confirm that the module (tooth pitch) is compatible with the crown gear to be used. NSR works with a widely adopted standard pitch in the slot scene, compatible with crowns from the brand itself and other common references in the market.

Installation and preparation

• Check that the inner diameter of the pinion (5.5 mm) fits your motor's axle.
• Adjust the mesh with the crown gear before permanently securing the motor-pinion assembly: there should be minimal play, without excessive clearance or rubbing.
• Apply a small amount of specific slot transmission grease to the teeth of the pinion and crown gear to prolong their lifespan.
• Includes 2 units in the pack, allowing you to prepare two cars or have a spare ready for the next heat.

Ideal for…

Drivers competing in categories where NSR is a reference brand and looking to standardise their setup with components from the same system. It is also practical for club tuners who want to have several tested and labelled gear ratios ready to switch between sessions.

Common mistakes

• Confusing axle diameter: before ordering, check the diameter of your motor's axle. A pinion with the wrong hole cannot be forced without damaging the axle or the pinion itself.
• Mixing modules: a pinion with a 0.4 module does not mesh well with a crown gear of 0.5 module, even if it fits physically on the axle. Wear will be premature and the transmission noisy.
• Forgetting the crown gear pair: changing only the pinion without checking the crown gear can unbalance the gear ratio intended by the system manufacturer.

Frequently asked questions

How many units does the pack include?

The NSR7010 pack includes 2 pinions with 10 teeth.

What axle diameter do I need to use these pinions?

The inner diameter of the pinion is 5.5 mm, so your motor's axle must have that measurement for a proper fit.

Which crown gears are compatible with these pinions?

They are compatible with crown gears from the NSR Easy Setup system and, in general, with crown gears that share the same tooth module. Check your chassis setup sheet or the NSR catalogue to confirm the correct combination.

When is it advisable to use a 10-tooth pinion instead of one with fewer teeth?

A 10-tooth pinion offers a longer gear ratio: the car reaches a higher top speed but takes longer to accelerate from a standstill. It is the usual choice for fast layouts with long straights. On technical circuits with many curves, a pinion with fewer teeth may yield better results by prioritising acceleration out of corners.

Do I need grease for the transmission?

Yes. Applying a small amount of specific slot gear grease at the pinion-crown contact reduces wear and noise, and improves transmission efficiency.

NSR Easy Setup 10-tooth pinion (ref. NSR7010), 5.5 mm bore diameter, pack of 2 units. Designed for slot car transmission tuning within the NSR Easy Setup system, these pinions are a go-to choice for club racers and competitive builders looking to dial in top speed on fast, high-speed layouts. Compatible with NSR crowns sharing the same gear module. A reliable, precise component from one of the most respected names in 1/32 slot car racing.