26-tooth inline crown gear for 3/32 axle (4 pcs)

Four MB Slot crowns for inline transmission, ready to adjust your track setup

The inline crown MB13026 from MB Slot is a precision spare part designed for setups in inline configuration — that is, with the motor positioned longitudinally, in line with the rear axle — on standard axles of 3/32" (2.38 mm). With 26 teeth, it offers a balanced gear ratio, suitable for mixed circuits where a reasonable compromise between top speed and corner exit acceleration is sought.

The pack includes 4 units, making it a very practical option for both the builder who assembles multiple models at once and the club racer who needs to have spares on hand during a competition day.

Function and performance

In an inline setup, the crown works directly attached to the rear axle and in contact with the motor pinion. The selection of the number of teeth on the crown is one of the first parameters adjusted when preparing a car: more teeth means greater pulling force and better acceleration; fewer teeth, higher top speed. The 26 teeth of this crown place the gear ratio in a medium-high range, versatile for most layouts.

MB Slot manufactures its crowns with low-friction materials that reduce gear noise and minimize wear on both the crown itself and the pinion it works with. The result is quieter operation and an extended lifespan, especially relevant in intensive use fleets.

Compatibility

This crown is designed for 3/32" axles, the most common size in the 1/32 category. It is compatible with standard pitch pinions from various brands on the market, although it is always advisable to check the pinion module before mounting to ensure optimal meshing without play or interference.

Mounting and preparation

Mounting an inline crown requires that the axle is correctly aligned with the motor pinion. Before permanently securing the crown, it is advisable to check the backlash (play between teeth) by turning it by hand: it should turn smoothly, without hard spots or excessive play. A small adjustment in the axial position of the crown can make a noticeable difference in the car's response.

• Teeth: 26
• Type: Inline (inline mounting)
• Axle compatibility: 3/32" (2.38 mm)
• Reference: MB13026
• Contents: 4 units per pack

Common mistakes

• Confusing inline with sidewinder: this crown is for inline configuration (longitudinal motor). In a sidewinder setup, the motor is parallel to the axle; in that case, an angled crown or anglewinder type is needed, not this one.
• Not checking the pinion module: even if the axle is 3/32", if the pinion has a different module than the crown, the meshing will not be correct.
• Over-tightening: securing the crown too tightly can slightly deform the tooth profile and increase friction. A firm but controlled adjustment is sufficient.

Frequently asked questions

How many crowns does the MB13026 pack contain?

The pack includes 4 inline crowns with 26 teeth, all identical, for a 3/32" axle.

What motor configuration is this crown designed for?

It is an inline crown, designed for setups where the motor is positioned longitudinally (in line with the rear axle). It is not the right choice for sidewinder or anglewinder setups.

Is it compatible with pinions from other brands?

Generally yes, as long as the pinion has the same tooth module as the crown. It is advisable to verify this before mounting, as different brands may use slightly different modules.

What gear ratio does 26 teeth offer?

The gear ratio also depends on the number of teeth on the pinion. For example, with an 11-tooth pinion, the ratio would be approximately 2.36:1, a balanced value for circuits with medium acceleration sections.

When should the crown be replaced?

When visible wear is observed on the tooth flanks, abnormal noise during operation, or loss of traction without any apparent cause. Having a pack of 4 units on hand allows for immediate replacement without interrupting the session.

Is it suitable for competition or just for recreational use?

It is a valid spare part for both club competition preparations and maintenance of home-use models. The low friction of the material makes it especially suitable for long sessions.

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