COMBI PLUS MONOBLOCK 29 Slotit

A brass block that connects crown and axle holder without compromises

The Combi Plus Monoblock 29 from Sloting Plus (ref. SP053103) is a one-piece brass assembly that integrates crown and axle support into a single machined piece. By eliminating intermediate joints, rigidity is gained, rotational mass is reduced, and any source of play that could affect power transmission to the rear axle is minimized.

Main features

• Material: precision machined brass.
• Axle diameter: 2.38 mm (3/32").
• Total length: 29 mm.
• Weight: 1.05 g.
• Contents: bag with 1 unit.
• Compatibility: Slot.it angle winder motor pods at any of its offset heights that use ball joints.

Function and performance

The monoblock design has a clear advantage over multi-piece assemblies: there are no additional fastening points that can loosen with use or introduce small eccentricities. This results in cleaner transmission, with less vibration and more predictable behaviour both in corners and on straights.

Brass offers a highly valued balance in slot preparation: high machinability (allows adjustments with bench tools), sufficient density to provide some inertia without significantly increasing total weight, and reasonable durability for the usual wear rate on track.

Compatibilities

This monoblock is specifically designed to work with the Slot.it angle winder motor pod. It is compatible with any of the available offset heights in that pod, as long as the configuration uses ball joints. Before mounting, it is advisable to check the chosen offset height to ensure that the 29 mm length fits correctly within the chassis geometry.

Assembly and preparation

Sloting Plus strongly recommends reading the assembly tips and tricks before starting the assembly. An incorrect adjustment of the cylinder can create play or tension that negates the advantages of the monoblock design. The official technical document from Sloting Plus details the step-by-step procedure for precise adjustment:

Sloting Plus assembly guide and tricks (PDF)

Frequently asked questions

Is it compatible with angle winders from other brands?

The Combi Plus Monoblock 29 is designed and validated for the Slot.it angle winder motor pod with ball joints. Its use in motor pods from other brands depends on whether they share the same ball joint geometry and offset, which must be verified on a case-by-case basis before installation.

What is the difference between a monoblock and a separate crown + axle holder set?

In a separate set, the crown and axle holder are joined by mechanical fastening (screw, glue, or pressure). Any small play in that joint results in vibration and loss of efficiency. The monoblock eliminates that joint: the piece is machined in a single operation, ensuring that the alignment between crown and axle is structurally perfect.

Is the weight of 1.05 g relevant in competition?

In competitive slot preparation, every tenth of a gram in rotating parts impacts the inertia of the rear assembly. 1.05 g is a contained weight for a brass piece of this nature, and it helps maintain an appropriate balance of the rear end.

Do I need special tools to assemble it?

No special tools are required beyond the usual slot preparation equipment (fine-tipped pliers, axle press, or similar). However, it is essential to follow the technical guide from Sloting Plus for cylinder adjustment, as indicated by the manufacturer.

Is it sold individually or in a pack?

The bag contains 1 unit.

The Sloting Plus Combi Plus Monoblock 29 (SP053103) is a precision brass one-piece assembly combining crown and axle holder for 3/32" (2.38 mm) axles. Specifically designed for Slot.it angle winder motor pods with ball joints, it delivers improved rigidity, reduced vibration and cleaner power transfer. A reliable upgrade for slot car racing enthusiasts seeking consistent performance on club and competition tracks.