14z nylon pinion (4 pcs)

14-Tooth Nylon Pinion: Precise and Silent Transmission in Pack Format

The pinion is one of the most sought-after components in any slot transmission system. Its progressive wear —especially during intense competition sessions or on fast tracks— makes having spare parts on hand a smart decision. With this pack of 4 nylon pinions with 14 teeth (ref. CX1058-14), you have enough material for several replacements or to equip multiple cars at once.

Function and Performance

The pinion works in tandem with the crown, transmitting the motor's rotation to the rear axle. The number of teeth —in this case, 14— determines the final gear ratio along with the chosen crown: the fewer teeth on the pinion compared to the crown, the greater the multiplication and torque; the more teeth, the higher the top speed. With 14 teeth, this pinion is positioned in a mid-high range, suitable for speed tracks or high-revving motors where a balance between acceleration and top speed is sought.

The nylon material offers several practical advantages over metal:

• Quieter operation, especially valued during long sessions or in clubs with multiple cars on track.
• Less aggressiveness on the crown, which can prolong the lifespan of the transmission set.
• Reduced weight, which helps maintain low rotational inertia.

Compatibility and Installation

For proper installation, it is essential to verify that the inner diameter of the pinion matches the diameter of the motor shaft, and that the module of the pinion is compatible with that of the crown it will work with. Both parameters must match to ensure a clean engagement without vibrations. If you do not have this information from your chassis or motor manufacturer, consult it before installation.

Replacing the pinion is a common maintenance operation: with the right tools (pinion puller, bench press), it can be done in a few minutes and makes a noticeable difference in the car's performance.

Ideal for…

• Enthusiasts who want to keep a stock of spare parts without running out of material at the least opportune moment.
• Club preparers who work with several cars simultaneously.
• Competitors who adjust the gear ratio according to the circuit and need to test different pinion-crown combinations.

Considerations

• Always check the module of the pinion and the diameter of the shaft before placing the order.
• Nylon may exhibit greater sensitivity to very high temperatures generated by high-power motors during prolonged runs. In such cases, monitor the condition of the pinion periodically.
• This pack includes 4 units, making it an economical option for replenishment or experimentation with gear ratios.

Frequently Asked Questions

What gear ratio do I achieve with a 14-tooth pinion?

The gear ratio is calculated by dividing the number of teeth on the crown by the number of teeth on the pinion. With a 14z pinion, if you use a 28-tooth crown, the ratio is 2:1; with a 35-tooth crown, it rises to 2.5:1. A higher ratio means more torque and acceleration; a lower ratio means higher top speed.

Is nylon better than brass or steel for the pinion?

It depends on the use. Nylon is quieter and less aggressive on the crown, but it may wear out faster under very high loads or high temperatures. Brass and steel offer greater durability in demanding conditions. For recreational or club use, nylon is a very balanced option.

How do I know if the pinion is compatible with my motor?

You need to know the diameter of your motor's shaft (usually 1.5 mm or 2 mm in slot 1/32) and the module of the pinion, which must match that of the crown you are already using. Check the specifications of your chassis or motor before making the change.

Can I use this pinion to adjust performance according to the circuit?

Yes. Changing the pinion is one of the quickest ways to adapt the transmission to the type of layout. For circuits with many tight corners, longer ratios (more torque) are usually preferred; for fast tracks and long straights, shorter ratios (higher top speed). Having several pinions with different tooth counts, like this pack of 4 units, facilitates that experimentation.

How many units does this pack include?

This pack contains 4 nylon pinions with 14 teeth, all under the reference CX1058-14.

The CX1058-14 is a pack of 4 nylon pinion gears with 14 teeth, designed for slot car transmission systems. Nylon pinions provide smooth, quiet power transfer between the motor and rear axle, making them a popular choice for club racing and recreational slot car use. Whether you're fine-tuning your gear ratio for a fast circuit or keeping spare parts ready for your next session, this four-unit pack offers great value. Compatible with standard slot car motor shafts — always verify shaft diameter and gear module before fitting. Available at Ministry of Hobby, your specialist slot car and scale modelling store.