15d Ergal pinion 8.0mm for 2mm axle

Precision in Every Tooth: the Scaleauto Ergal Pinion for Serious Competition

The SC-1098E80 is the 15-tooth pinion from Scaleauto's Ergal range, designed for 2 mm axles and with an outer diameter of 8.0 mm. A small component that makes a real difference on the track in the world of slot preparation.

Function and Performance

The pinion is the link between the motor and the crown gear: it transmits the rotation from the motor shaft to the final drive. A well-sized pinion, manufactured with tight tolerances, reduces losses due to vibration, minimises play in the transmission, and ensures that power reaches the rear wheels intact.

With 15 teeth, this pinion offers an intermediate gear ratio, suitable for setups that seek a balance between acceleration and top speed, depending on the crown gear it is paired with.

Material: Why Ergal Matters

Ergal is a high-strength aluminium alloy (7000 series, with zinc as the main alloying element) widely used in aerospace and competition due to its exceptional strength-to-weight ratio. In a slot pinion, this translates to:

• Reduced mass, which decreases rotational inertia and improves response in acceleration and braking.
• High dimensional rigidity: maintains shape under load and temperature.
• Good wear resistance compared to conventional aluminium.

Compared to standard plastic pinions, the difference in precision and durability is noticeable. Against brass pinions, Ergal wins in lightness without sacrificing robustness.

Compatibility and Installation

This pinion is specifically designed for 2 mm diameter axles, the most common in open can motors and many competition setups in 1/32 scale. The outer diameter of 8.0 mm determines the final gear ratio along with the chosen crown gear: combine it with the appropriate crown according to your category's regulations or the circuit's characteristics.

Scaleauto produces pinions and crown gears with the same machining standard, so the meshing between pieces from the same range is particularly precise. Nevertheless, always check the module and pitch of the teeth to ensure compatibility with crown gears from other manufacturers.

Installation and Preparation

• Clean the axle before mounting the pinion to avoid eccentricities due to dirt or burrs.
• Adjust with the appropriate tool: a pinion holder or fine-nose pliers without damaging the teeth.
• Check the lateral play with the crown once mounted: there should be minimal clearance, without tightness or excess.
• If using thread lock to secure the pinion on the axle, apply a minimal amount to avoid hindering future disassemblies.

Common Mistakes

• Mounting the pinion without checking centring: an eccentric pinion generates vibration and premature wear on the crown and motor.
• Confusing the pinion diameter with the module: the outer diameter (8.0 mm) is not the module; ensure that the pitch of the teeth matches that of your crown.
• Ignoring transmission play: too much tightness between pinion and crown overloads the motor; too much play introduces noise and inaccuracy.

Ideal for…

This pinion fits perfectly in competition setups on Sport track (Scaleauto, Slot.it) and in custom builds where the aim is to minimise rotating weight. Whether you are preparing a car for a club championship or fine-tuning a competition model, Ergal is the natural choice when plastic is no longer sufficient.

Frequently Asked Questions

What is the difference between an Ergal pinion and a plastic one?

Ergal is a high-strength aluminium alloy. It offers greater dimensional precision, better wear resistance, and less rotational mass than plastic, improving the car's response in acceleration and braking.

Which crown gears is this pinion compatible with?

It is compatible with crown gears of the same module and pitch. Scaleauto manufactures crown gears designed to mesh with its pinions, but always check the module before combining parts from different manufacturers.

What motors and configurations is it intended for?

Being for a 2 mm axle, it fits most open can motors used in 1/32 slot racing. It is suitable for both inline and sidewinder or anglewinder configurations, as long as the motor shaft is 2 mm.

How many pinions does the SC-1098E80 reference include?

The available information does not specify whether it is sold as a single unit or in a pack. Check the product sheet in-store to confirm before placing your order.

How does the number of teeth affect the gear ratio?

With 15 teeth, the final gear ratio will depend on the crown it is paired with: more teeth on the crown implies more reduction (more torque, less top speed) and fewer teeth means more top speed with less torque. Adjust according to the circuit and category.

The Scaleauto SC-1098E80 is a 15-tooth Ergal alloy pinion gear for 2 mm axles, with an 8.0 mm outer diameter. Designed for 1/32 slot car racing, it delivers reduced rotational mass and precise meshing for competitive setups on Sport track systems. Compatible with Scaleauto and Slot.it crown gears of matching module, it is the go-to upgrade for club racers and serious hobbyists seeking performance over stock plastic drivetrains.