Motor 21000

Power and balance in a long can motor signed by Avant Slot

The Motor 21000 (AV20117) is Avant Slot's offering for those seeking a long can motor with well-defined performance: 21,000 RPM at 12v and an M-Force of 6.5 gr. These figures, on paper, place this motor in a very interesting mid-high range for club racing or for preparing a street car with more character.

Main features

• RPM: 21,000 at 12v
• M-Force: 6.5 gr
• Can format: Long
• Reference: AV20117
• Brand: Avant Slot

Behaviour and performance

The 21,000 RPM at 12v provide a responsive performance without reaching the extremes of high competition motors, resulting in a more manageable power curve and moderate wear on the braids and other electrical components. The M-Force of 6.5 gr delivers sufficient torque for effective traction in corners, especially in pinion and crown gear configurations aimed at balancing top speed and acceleration.

The long can is crucial when choosing this motor: it determines the necessary space in the chassis and the position of the rear axle. It is advisable to check compatibility with the receiving chassis before proceeding with the installation.

Recommended applications

This motor fits well in preparation projects where an intermediate point between a standard motor and a pure competition motor is sought. It serves as a good base for club cars in categories not restricted by RPM regulations, and also for enthusiasts looking to enhance performance compared to the original motor without losing enjoyment on the track.

Usage recommendations

• Check the available space in the chassis for the long can before purchasing.
• Adjust the pinion/crown gear ratio according to the track: higher ratio for fast tracks, lower for technical layouts.
• Periodically check the condition of the braids to maintain optimal electrical transmission.
• Perform an initial run-in at reduced voltage to settle the brushes and extend the motor's lifespan.

Frequently asked questions

What is the difference between long can and short can?

The length of the can determines the physical dimensions of the motor and, therefore, the space it occupies within the chassis. Long can motors are usually more common in cars with larger chassis or generous wheelbases. It is essential to check compatibility before installation.

Is it suitable for club racing?

It depends on the regulations of each club. With 21,000 RPM at 12v, it falls within a range that many recreational and club categories accept without restriction. Always consult local regulations before using it in a race.

What pinion/crown gear ratio is recommended for this motor?

There is no universal ratio: it depends on the track, tyre grip, and driver preferences. As a starting point, a ratio around 9/27 or similar is common for mixed tracks, adjusting later according to lap times.

Does it need a run-in?

Yes. Performing a run-in at low voltage for a few minutes helps settle the brushes, improves electrical contact, and can significantly extend the motor's lifespan.

Which chassis brands is it compatible with?

The provided information only indicates the long can format. Specific compatibility with each chassis depends on the dimensions of the motor housing. We recommend verifying this with the specifications from the chassis manufacturer.

The Avant Slot Motor 21000 (AV20117) is a long-can slot car motor delivering 21,000 RPM at 12v and 6.5 gr of torque force. Designed for club racing and performance builds, it offers a balanced power curve suitable for a wide range of chassis and track layouts. A reliable choice for slot car enthusiasts looking to upgrade their drivetrain without going full competition spec.