Silicone 150CPS

The medium viscosity silicone that makes a difference in your slot car's grip

In the world of slot racing, the behaviour of the tyre on the track is one of the decisive factors in both club competition and recreational use. The Silicone 150CPS (ref. MP010-150) is a medium-viscosity lubricant/treatment specifically used in the preparation of slot tyres, allowing for precise and repeatable adjustment of grip levels.

What is 150CPS viscosity and why does it matter?

The CPS (centipoise) unit measures the viscosity of a fluid: the higher the value, the denser and "heavier" the silicone; the lower the value, the more fluid it is. With 150CPS, we are at a medium viscosity, which offers a very valued balance point for preparers:

• It penetrates well into the tyre surface without excessive runoff.
• It provides a moderate grip effect, ideal for technical tracks where excess grip is penalising.
• It facilitates a uniform and controlled application, whether with a brush or swab or applicator.
• The action time is predictable, allowing for adjustment of the treatment level based on available running laps.

Main applications

Although its most widespread use in slot racing is tyre treatment to regulate grip, silicone of this viscosity also finds application in:

• Light lubrication of axles and bearings when seeking to minimise resistance without attracting dust or dirt.
• Preventive maintenance of plastic and rubber parts subjected to friction.
• Preparation of tyres in categories where regulations limit the use of more aggressive treatments.

Behaviour and performance on track

The silicone 150CPS acts by slightly softening the surface of the tyre, increasing its effective contact area with the track. The result is a progressive improvement in grip, without the sharp peaks generated by more aggressive treatments. This translates into:

• Greater consistency in cornering during the first laps after treatment.
• More predictable behaviour on rigid plastic tracks (Scalextric, Ninco) and on more porous surfaces.
• Easy repeatability of the process: the same amount of product offers similar results from one session to another.

Usage recommendations

• Apply the silicone with a swab or fine brush, distributing a uniform layer across the tyre tread.
• Allow to act for a few minutes before running the car on the track so that the product penetrates and the carrier solvent evaporates.
• Adjust the amount applied according to the desired grip level: more product or longer action time equals greater grip.
• Store the product in a cool, dry place, with the cap tightly closed to prevent evaporation of the carrier solvent.
• For competition, always check your club or championship regulations regarding the use of tyre treatments.

Ideal for…

• Preparers and club drivers looking for a medium viscosity treatment and consistent results.
• Recreational enthusiasts wanting to improve the grip of their cars without major complications.
• Any scale and track system, both Universal (Scalextric, Ninco) and Sport (Scaleauto, Slot.it).

Considerations

• The reference MP010-150 identifies this viscosity within the range; if you are looking for a different effect, there are variants with lower or higher CPS.
• Excess product can stain the track and transfer to the rest of the circuit; always apply with moderation.
• It is not recommended for use on foam tyres without prior knowledge of the material's reaction to the carrier solvent.

Frequently asked questions

What is the difference between silicone 150CPS and other viscosities?

The viscosity 150CPS is a midpoint: more fluid than variants of 300CPS or higher (which offer more grip but can be harder to dose) and denser than those of 50CPS (which act more gently and dissipate faster). The choice depends on the type of track, race conditions, and the level of grip desired.

How often should I treat the tyres?

It depends on the number of laps and the wear of the tyre. The usual practice in club competition is to apply the treatment before each qualifying session or race, after prior running. In recreational use, a treatment every few sessions is usually sufficient to notice an improvement in grip.

Does it affect the track or lane?

If applied correctly and in the right amount, the product should not transfer significantly to the lane. An excess of silicone can cause stains or accumulation on the track, which would affect the grip of all cars. Always apply with moderation.

Is it compatible with any type of tyre?

The silicone 150CPS is suitable for conventional rubber tyres. For foam tyres, we recommend first conducting a test on a small area, as some foam materials may react differently to the carrier solvent.

Can I also use it to lubricate axles and bearings?

Yes, in small amounts it can be used to lightly lubricate axles, bearings, and plastic parts subjected to friction. Its medium viscosity makes it suitable for applications where excessive lubrication or attraction of abrasive dust is not desired.

Is it allowed in competition?

The use of tyre treatments varies according to the regulations of each club or championship. Always check with the organiser before using it in an official race.

The Silicona 150CPS (ref. MP010-150) is a medium-viscosity silicone tyre treatment widely used in slot car preparation. With a 150 centipoise formulation, it delivers controlled grip enhancement for rubber tyres on both Universal (Scalextric, Ninco) and Sport (Scaleauto, Slot.it) track systems. Its balanced viscosity ensures even application, predictable performance and easy dosing, making it a reliable choice for club racers and recreational hobbyists alike. Compatible with 1/32 and 1/24 scale slot cars.