93d toothed belt

Transmission Precision: 93-Tooth MXL Pitch Timing Belt

The timing belt is one of those components that goes unnoticed until it fails. In slot car setups with belt drive systems, the quality and exact fit of this part directly determine the smoothness of response, efficiency in power transfer, and durability of the assembly. This 93-tooth belt for MXL pitch, with reference PSP-BD93MXL, meets those demands with a design specifically for MXL profile pulleys.

Technical Specifications

• Number of Teeth: 93
• Pitch: MXL (standard tooth profile for precision applications)
• Thickness: 1.8 mm
• Reference: PSP-BD93MXL

Function and Performance

MXL timing belts are used in transmissions that require perfect synchronisation between the motor and the axle, with no slippage or loss of pitch. Unlike friction drives, the tooth profile fits directly with the pulley, ensuring immediate throttle response and a constant gear ratio.

The thickness of 1.8 mm makes this belt suitable for slot car chassis with limited space between components, a common detail in more meticulously prepared setups.

Compatibility

This belt is compatible with MXL pitch pulleys. It is essential to verify that both the driving and driven pulleys are machined for this tooth profile and that the width of the pulley is compatible with that of the belt. If you have doubts about the correct combination, check your chassis specifications or consult with the builder.

Installation and Preparation

For optimal performance, the belt must be installed with the right tension: neither too loose, which would cause tooth skipping under load, nor too tight, which would generate friction and premature wear on both the belt and the axle bearings. A small controlled play is standard in the best competition setups.

It is advisable to periodically check the condition of the belt, especially after long running sessions or if any irregularity in the car's response is detected. Wear on the tooth flanks is the first symptom that it is time to replace it.

Frequently Asked Questions

What does MXL pitch mean in a timing belt?

MXL is an internationally standardised tooth profile for precision drive belts. It defines the shape and pitch (distance between teeth), so an MXL belt is only compatible with pulleys designed for that same profile.

How do I know if this belt is the right one for my chassis?

You need to confirm that your chassis uses MXL pitch pulleys and that the number of teeth (93) corresponds to the necessary length to cover the axle distance with the appropriate tension. Check your chassis documentation or consult the builder if you have doubts.

How often should the belt be replaced?

It depends on the intensity of use. In competition, many builders inspect it in every session and replace it at the first sign of wear on the tooth flanks. For recreational use, periodic checks are sufficient.

Can I use this belt with any MXL pulley regardless of width?

The tooth profile must be MXL, but you should also verify that the width of the pulley is compatible with that of the belt. A belt narrower than the pulley may shift laterally; a wider one may not seat properly. Always check both dimensions.

The PSP-BD93MXL is a 93-tooth MXL pitch timing belt, 1.8 mm thick, designed for precision slot car belt-drive systems. Compatible with MXL pulleys, it ensures smooth and consistent power transmission from motor to axle. An essential spare part for slot car builders and racing enthusiasts seeking reliable drivetrain performance.