Rear Pulley for SCALEAUTO Crown Reverse Sidewinder

Rear pulley for Scaleauto Reverse Sidewinder crown, manufactured in 3D by 3dsrp

When working with a Reverse Sidewinder configuration, every piece of the drivetrain matters. This rear pulley from 3dsrp has been specifically designed to integrate with the Scaleauto crown in such setups, where the motor is positioned parallel to the rear axle with the rotation direction reversed to place the pinion on the opposite side.

Function and performance

The rear pulley is the component that completes the belt drive system in Reverse Sidewinder setups: it receives the motion from the belt coming from the motor/pinion assembly and transfers it to the crown to move the rear axle. A worn or loose part directly affects acceleration response and consistency from lap to lap. Replacing it with a new unit is one of the most effective maintenance tasks to restore the original performance of the chassis.

Manufacturing via FDM 3D printing

3dsrp produces this part using fused deposition modelling (FDM) technology, a 3D printing process that allows for the production of complex geometries with good dimensional consistency. It is the usual solution for niche or low-production spare parts, where conventional machining is not viable. The result is a functional part, tailored to the dimensions of the Scaleauto system.

Compatibility

This pulley is designed to work alongside the Scaleauto crown in Reverse Sidewinder configurations. Before ordering, ensure that your setup corresponds to this specific system: remember that conventional Sidewinder, Inline, and Anglewinder have different drivetrain geometries and are not interchangeable.

Installation and preparation

• Check the condition of the belt before installing the new pulley; if there is wear, replace it at the same time.
• Ensure that the pulley is correctly aligned with the crown to avoid vibrations and premature wear.
• Verify the tension of the belt after installation: it should be neither excessive nor loose.
• Clean the rear axle before installation to ensure a proper fit.

Frequently asked questions

What motor configuration is this pulley compatible with?

It is specifically designed for Reverse Sidewinder setups with Scaleauto crown. In this configuration, the motor runs parallel to the rear axle but with the pinion oriented to the opposite side of the usual, which reverses the direction of rotation.

Is this part suitable for competition or just for recreational use?

As a maintenance spare part, its use is valid for both club preparations and recreational cars. Its function is to restore the drivetrain to its original conditions.

How many units does the order include?

The order includes 1 unit.

Do I need special tools for installation?

Generally, the usual slot preparation tools are sufficient: precision screwdrivers and, depending on the chassis, a small-sized Allen key. No special tooling is required.

Should I also change the belt when replacing the pulley?

It is not mandatory, but it is recommended if the belt has been used for many hours. Changing both parts at the same time ensures that the drivetrain operates with components in the same state of wear.

The 3dsrp Rear Pulley for Scaleauto Reverse Sidewinder Crown is a 3D FDM-printed replacement part designed for slot car enthusiasts running Reverse Sidewinder drivetrains with Scaleauto crowns. Ideal for club racers and hobbyists looking to restore drivetrain performance, this precision pulley ensures accurate belt engagement and consistent lap times. Compatible with Scaleauto Reverse Sidewinder setups. Sold individually (1 unit per order).