HRS motor mount V12

Millimetre adjustment for your transmission: the HRS V12 mount from Slot.it

The SI-CH24C is the specific HRS motor mount for the Slot.it V12 motor, with an offset of -1.0 mm from the standard position. This small but significant displacement allows for fine-tuning the relationship between pinion and crown gear, optimising the mesh and reducing wear during continuous running.

Function and performance

The motor mount — or bracket — is one of the components that most influences power transmission within a prepared slot car. An incorrect offset generates play, gear noise, and loss of efficiency. The SI-CH24C, with its -1.0 mm offset, allows the motor shaft to be brought closer to the rear axle, achieving a more precise coupling between pinion and crown gear in those combinations where the standard position is not optimal.

It is part of Slot.it's HRS (High Resistance System) system, a modular platform that allows for the interchange of mounts, pods, and suspension components to adapt the chassis to different transmission and geometry configurations.

Compatibility

This mount is specifically designed for the Slot.it V12 motor within the HRS ecosystem. If you are using other motors from the same family (such as the V12/2 or other variants), consult the appropriate mount reference, as the fixing dimensions may differ.

The Slot.it HRS system is compatible with a wide variety of chassis from the brand; always check compatibility with your specific model before installation.

Installation and preparation

The installation does not require special tools, although it is advisable to check the alignment of the rear axle once the mount is installed. To achieve the best performance:

• Ensure that the pinion and crown gear are perfectly aligned in the axial plane.
• Check that there is no excessive lateral play or tightness that generates friction.
• If the -1.0 mm offset is insufficient or excessive for your pinion/crown combination, Slot.it offers HRS mounts with other offset values for precise adjustment.

Ideal for…

Preparers and club drivers who work with Slot.it chassis and want to squeeze every tenth by adjusting the transmission. It is also a direct replacement part if the original mount has suffered wear or breakage.

Frequently asked questions

What does the -1.0 mm offset mean in a motor mount?

The offset indicates the displacement of the motor shaft relative to the neutral or standard position of the mount. A value of -1.0 mm brings the motor closer to the rear axle, allowing for adjustment of the pinion mesh on the crown gear when the standard position generates play or interference.

Is this mount compatible with any Slot.it motor?

No. The SI-CH24C is specifically designed for the Slot.it V12 motor within the HRS system. For other motors from the brand, there are specific mounts with the corresponding fixing dimensions.

Can I use this mount in an anglewinder or sidewinder configuration?

The Slot.it HRS mount is primarily used in inline configurations (motor inline with the rear axle). Consult your chassis technical documentation to confirm the allowed mounting orientation.

Do I need to change the pinion or crown gear when installing this mount?

Not necessarily, but the change in offset may affect the mesh distance. It is advisable to check the pinion-crown coupling after installation and adjust if necessary.

Is it sold in individual units or in a pack?

The available information does not specify the number of units per package. Please consult the product sheet or contact us if you need confirmation before placing your order.

The Slot.it SI-CH24C is an HRS motor mount for the V12 motor with a -1.0 mm offset, designed to fine-tune pinion-to-crown mesh in competitive slot car builds. Part of Slot.it's modular HRS platform, it ensures precise motor positioning for inline configurations, reducing drivetrain noise and improving power transfer efficiency. An essential tuning component for club racers and serious hobbyists working with Slot.it chassis.