10t pinion M50 polyamide for 1.5mm axle 5mm diameter

The right pinion makes a difference in every corner exit

When we talk about transmission in a slot car, the pinion is one of the components that most influences the actual behaviour of the model. The Scaleauto SC-1293 is a 10-tooth pinion, module 50 (M50), made of polyamide, specifically designed for 1.5 mm diameter shafts and with an outer diameter of 5 mm. A very specific combination of measurements that makes it the ideal replacement when you need exactly these specifications without compromise.

Function and performance

The pinion is the gear that connects the motor to the crown gear, transmitting the motor's power to the rear axle. Its number of teeth and module determine the final gear ratio of the car, which directly affects acceleration, top speed, and corner exit response.

• 10 teeth: configuration aimed at favouring top speed in gear ratios combined with crowns of a higher number of teeth, or providing a more direct response depending on the chosen crown.
• Module 50 (M50): common standard in the competitive slot world, compatible with crowns of the same module.
• Polyamide: synthetic material that combines lightness, good wear resistance, and quieter operation compared to metal pinions. Ideal for wooden or plastic tracks where transmission noise matters.
• 1.5 mm shaft: specific shaft diameter, common in motor configurations for 1/32 scale competition cars and similar.
• 5 mm outer diameter: dimension to consider for verifying the available space in the chassis and the wheelbase.

Compatibility and applications

This pinion is designed by Scaleauto for its own applications, but it can be suitable for any setup where a 1.5 mm shaft is used and a polyamide M50 pinion is required. It is essential to verify that the crown with which it will be combined also has module 50 to ensure correct meshing and prevent premature wear.

Scaleauto is a reference brand in the competitive slot world, with a wide range of spare parts and precision components for demanding hobbyists and club preparers. Its parts are manufactured with tight tolerances, facilitating assembly and ensuring consistent performance on track.

Assembly and preparation

Assembling a polyamide pinion requires attention to avoid damaging the material:

1. Ensure that the shaft is clean and free of burrs before inserting the pinion.
2. Carefully insert the pinion, applying even pressure to avoid deforming it.
3. Check that it is perfectly perpendicular to the shaft and aligned with the crown.
4. Check the gear mesh with the crown: it should be minimal but without interference. Excessive tightening causes rapid wear; too much play results in power loss and noise.
5. It is not necessary to excessively lubricate polyamide pinions, but a minimal amount of lubricant specifically for plastics can extend their lifespan.

Common mistakes

• Combining different modules: using an M48 crown with an M50 pinion —or vice versa— results in incorrect meshing, excessive noise, and accelerated wear.
• Forcing the assembly: polyamide does not tolerate sudden impacts well. Use a pinion installer or appropriate tool.
• Ignoring alignment: a misaligned pinion causes vibrations that directly affect grip and stability of the car.

Frequently asked questions

What is the difference between a polyamide pinion and a metal one?

The polyamide pinion is lighter and quieter, and is less aggressive on the crown in case of minor misalignments. The metal one offers greater durability under high-stress conditions. For club or home track use, polyamide is an excellent choice.

Which crowns is this pinion compatible with?

Being module 50 (M50), it must be combined exclusively with crowns of the same module. Always verify this information before placing an order to ensure correct meshing.

Is it suitable for any motor configuration (Inline, Sidewinder, Anglewinder)?

Yes, the pinion itself is compatible with any configuration as long as the motor shaft is 1.5 mm. The motor layout (Inline, Sidewinder, or Anglewinder) does not affect the choice of pinion, but rather how it is positioned relative to the rear axle.

When should I change the pinion?

When you notice excessive play in the meshing, unusual noise in the transmission, apparent power loss, or visible wear on the tooth flanks. Regular inspection of the drivetrain extends the life of all components.

Can I use lubricant with this pinion?

Yes, but always use a lubricant compatible with plastics. Solvent-based lubricants can degrade polyamide. A minimal drop in the meshing is sufficient.

The Scaleauto SC-1293 is a 10-tooth module 50 polyamide pinion gear designed for 1.5 mm motor shafts, with a 5 mm outer diameter. A precise and lightweight transmission component for 1/32 slot car competition builds. Compatible with M50 crown gears from leading brands. Essential spare part for slot car enthusiasts looking to fine-tune their drivetrain setup on Scaleauto Sport track systems.