11t pinion M50 Ergal

11-Tooth Pinion in Ergal: Precise Transmission for Your Slot Car

The Scaleauto SC-1031 is an 11-tooth pinion gear with a module of 50, machined from Ergal, a high-strength, lightweight aluminium alloy highly valued in the preparation of competitive slot cars. It is designed for a standard 2 mm axle, the most common in the vast majority of slot setups.

Main Features

• Number of teeth: 11
• Module: 50
• Material: Ergal (high-durability aluminium alloy)
• Axle diameter: 2 mm (standard axle)
• Contents: 1 unit

Function and Performance

The pinion is the component that transmits power from the motor to the crown gear, and its correct selection directly influences the final gear ratio of the car. An 11-tooth pinion is situated in the usual range for moderate top speed configurations or for technical tracks where it is beneficial to multiply the output torque. The module 50 is the most widespread standard in the slot world, making it easy to combine with a wide variety of crowns of the same module.

Ergal offers a clear advantage over conventional plastic: greater rigidity, less wear, and dimensional stability even under prolonged heat cycles. At the same time, its weight is significantly lower than that of steel parts, which helps reduce the rotational inertia of the drivetrain.

Compatibility and Installation

This pinion is designed for a 2 mm axle, the standard diameter found in most commonly used slot motors. Before installation, it is advisable to check that the crown it pairs with is also module 50 to ensure correct and quiet meshing. The fit on the axle should be firm; if any play is noticed, it is recommended to secure it with a drop of low-strength thread lock to facilitate future disassembly.

Common Mistakes

• Mixing different modules (e.g., M50 pinion with M48 or M40 crown): the resulting meshing generates noise, vibration, and accelerated wear.
• Forcing the pinion onto an incorrectly sized axle: this can damage the hole or cause eccentricity in rotation.
• Not aligning the pinion correctly with the crown on the side axle: even minimal misalignment results in loss of transmitted power and increased wear.

Frequently Asked Questions

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

Ergal is an aluminium alloy that offers greater rigidity, better dimensional tolerance, and more wear resistance than conventional plastic. In intensive or competitive use, the difference in durability is significant.

Which crowns is this pinion compatible with?

With any crown of module 50 (M50) regardless of the brand, as long as the module matches. It is the most common combination in the slot world.

What type of motor is it designed for?

For motors with a standard 2 mm output shaft, which is the most widespread diameter in general-use slot motors. Check the diameter of your motor's shaft before placing an order.

How many units does the SC-1031 include?

The SC-1031 includes 1 unit.

Can I use this pinion in sidewinder, inline, or anglewinder configurations?

Yes. The pinion itself is compatible with any motor configuration; what varies is the position of the motor relative to the axle, not the type of pinion or its module.

The Scaleauto SC-1031 is an 11-tooth module 50 pinion gear machined in Ergal aluminium alloy, designed for the standard 2 mm axle. A reliable, lightweight transmission component for slot car racing and tuning enthusiasts looking for precision and durability in every run.