11-tooth pinion 6mm (X2)

Slot.it 11-tooth pinion for 6 mm axle: two units to have everything ready

When it comes to fine-tuning the transmission of a slot car, the small details make the difference. This 11-tooth pinion with a fitting for a 6 mm axle is one of the transmission components from the Slot.it catalogue, designed to work in perfect harmony with the crown gears of the same brand and ensure smooth engagement without play.

Function and performance

The pinion is the connection point between the motor and the crown gear; its number of teeth directly determines the gear ratio and, with it, the acceleration and top speed of the car. With 11 teeth, this pinion allows configurations aimed at balancing corner exit and straight-line speed, depending on the crown gear it is paired with.

• Teeth: 11
• Axle diameter: 6 mm
• Units included: 2
• Brand: Slot.it
• Reference: SIPI6011O

Compatibility

This pinion is designed for motors with a 6 mm axle, a common standard in competitive Sidewinder and Inline configurations. It is compatible with the Slot.it transmission system and can be combined with various crown gears from the brand's catalogue to adjust the gear ratio to each track.

Before installation, always check that the module of the pinion matches that of the crown gear you are using to avoid premature wear or noise in the transmission.

Installation and preparation

The fit of the pinion onto the axle should be firm but not forced. Slot.it recommends using a pinion puller for disassembly and checking the distance between the pinion and crown gear before closing the chassis: excessive play results in power loss, while excessive tightening causes friction and heating. A light application of specific slot transmission grease on the teeth helps prolong the lifespan of both parts.

Common mistakes

• Installing the pinion without checking alignment with the crown gear: causes uneven wear and noise.
• Using pinions with a different module than that of the crown gear: engagement will not be correct.
• Forgetting to check the play after each demanding running session, especially in competition.

Frequently asked questions

What type of motor is this pinion designed for?

For any motor with a 6 mm diameter axle, both in Sidewinder configuration (motor parallel to the rear axle) and Inline (motor in line with the rear axle).

Which Slot.it crown gears is it compatible with?

With all Slot.it crown gears that share the same tooth module. Check the brand's catalogue to confirm the combination before installation.

How many units does the pack include?

The pack includes 2 pinions, allowing for a spare or equipping two cars at once.

How do I choose the right number of teeth for my track?

The fewer teeth the pinion has in relation to the crown gear, the greater the reduction ratio: more acceleration but lower top speed. With 11 teeth, you achieve a good balance, although ideally, you should try different combinations based on the length and type of curves of the circuit.

Do I need any special tools to install it?

A puller and a pinion press are recommended to avoid damaging the axle or the pinion itself during installation and disassembly.

The Slot.it SIPI6011O is an 11-tooth pinion gear for 6 mm axles, sold in a pack of 2 units. Designed for precision slot car transmission setups, it suits both Sidewinder and Inline motor configurations. An essential spare part for competitive slot car racing, compatible with Slot.it crown gears and suitable for 1/32 scale performance builds.