Pressure pinion Ø 7 x Z12 STEEL

Precision in Every Tooth: the Steel Pinion SP084212 from Sloting Plus for Offset Mounts

The Pressure Pinion Ø7 x Z12 Steel SP084212 from Sloting Plus is a transmission component made of steel, specifically designed for those working with offset mounts ranging from 0.5 to 1 mm, regardless of the car or chassis brand. Its outer diameter of 7 mm opens up a range of combinations with crown gears of different sizes, something that tuners are well aware of when searching for the exact gear ratio for each track.

Technical Specifications

Function and Performance

Steel pinions offer superior durability compared to plastic or aluminium, especially in high-power configurations or during intense running sessions. The choice of steel in this SP084212 ensures that the pinion absorbs transmission stresses without deforming, maintaining the gear geometry session after session.

With 12 teeth and a diameter of 7 mm, this pinion is aimed at those looking to explore longer gear ratios in combination with crown gears of fewer teeth, or to adjust motor response on fast sections of the track. The offset mount reference is the most common in intermediate and advanced slot preparations.

Compatibility

It is designed to fit snugly on 2 mm diameter motor shafts. It is compatible with offset mounts ranging from 0.5 to 1 mm from any slot market brand: NSR, Slot.it, Scaleauto, Avant Slot, Scalextric, among others. If your chassis or mount falls within that offset range, this pinion can work with it.

Installation and Preparation

As a press-fit pinion, installation is straightforward on the motor shaft without the need for special tools, although it is advisable to use a pinion press to ensure even seating and prevent misalignment. Before inserting the pinion, check that the shaft is clean and free of burrs to facilitate fitting and ensure concentricity.

Once installed, it is essential to lightly lubricate the gear with a specific product for slot transmissions. Lubrication reduces premature wear, improves track performance, and extends the lifespan of both the pinion and the crown gear.

Common Mistakes

• Fitting the pinion without cleaning the shaft first: this can create play or eccentricities that result in vibration on the track.
• Not lubricating the gear: dry friction quickly wears down the teeth, especially in long sessions.
• Using this pinion on mounts outside the indicated offset range: the mesh point with the crown may be incorrect, causing noise or power loss.
• Combining with incompatible module crowns: always check that the module of the pinion and crown match before assembling the transmission.

Frequently Asked Questions

What type of mount should I use this pinion on?

It is optimised for offset mounts ranging from 0.5 to 1 mm. Outside of that range, the centre distance may not be suitable for a correct mesh with the crown.

What is the difference between a steel pinion and an aluminium one in slot racing?

Steel is more resistant to wear and better withstands transmission stresses in high-power configurations. Aluminium is lighter, which can reduce transmission inertia, but requires more care in installation and lubrication to avoid breakage during fitting.

Do I need any special tools to install it?

It is not essential, but it is recommended. A pinion press suitable for 2 mm shafts ensures straight and even seating, avoiding eccentricities that can cause vibration or noise on the track.

What crowns does this pinion pair well with?

The choice of crown depends on the gear ratio you are looking for and the gear module. Check the compatible crowns from Sloting Plus with the module of this pinion to find the optimal combination for your track and motor.

Is it necessary to lubricate it if it is made of steel?

Yes. Although steel is durable, lubrication is always necessary in any slot gear to reduce friction, improve power transmission, and extend the lifespan of the transmission.

The Sloting Plus SP084212 is a steel press-fit pinion gear with a 7 mm outer diameter and 12 teeth, designed for slot car offset motor mounts ranging from 0.5 to 1 mm. Compatible with 2 mm motor axles, it suits a wide range of slot car chassis brands and offers excellent durability for club racing and performance tuning. A reliable upgrade for hobbyists looking to fine-tune their gear ratio combinations.