Rally voltage adjustment box

When fine-tuning voltage makes the difference between winning and staying in the pits, the T800 T870024 box is the tool that should not be missing from your control panel.

In rally slot disciplines, the terrain changes, the curves are linked, and power delivery must adapt from stage to stage. With this T800 device, the driver or tuner can adjust the voltage linearly and steadily within a range of 3 to 20 volts, covering virtually any motor or circuit configuration.

Main features

• Wide adjustment range: from 3 to 20V, compatible with motors of varying power demands.
• Stable electronics: no voltage drops, ensuring a constant and predictable motor response.
• Accessible external fuse: a novelty of this version. It can be replaced without opening the device, even in the middle of a race.
• Robust and compact construction: easy to integrate into any tool case or track panel.
• Quick and stable connection: direct installation, hassle-free.

Recommended applications

The T870024 is specifically designed for rally slot, raid, and speed competitions. Its wide voltage range allows for smoother delivery in technical and twisty sections, or to maximise voltage on long straights, without compromising the integrity of the electrical system. Equally useful as a bench tool for the tuner who wants to test different voltages before finalising the race configuration.

A noticeable improvement on the stopwatch

The main innovation compared to previous versions is the fuse in an external position. In competition, every second counts. Not having to open the box in the event of an overload is a real advantage, not just a design detail. Replacement is immediate and can be done with gloves on if necessary.

Technical specifications

Frequently asked questions

What type of circuits is this adjustment box most useful for?

It is especially suitable for rally slot and raid circuits, where the variety of stages and surfaces requires frequent power adjustments. It is also practical in speed circuits when precise control of the power delivered to the motor is desired.

What advantage does the external fuse have over previous versions?

It allows for the fuse to be replaced in the event of an overload without needing to open the device. During a race or testing session, this reduces downtime to seconds, compared to the minutes it could take to dismantle an internal fuse unit.

Is it compatible with any slot motor?

Its range of 3 to 20V makes it compatible with the vast majority of motors used in slot, both in competition and recreational use. We recommend always checking the maximum voltage allowed by the specific motor before operating near the upper limit.

Can I also use it as a preparation tool on the bench, off the track?

Yes. It is a common tool on the tuner’s bench to test the motor's behaviour at different voltages before defining the final race configuration.

What happens if an overload occurs?

The external fuse protects the system. When it blows, it is simply a matter of replacing it directly without additional tools or the need to dismantle the unit.

The T800 T870024 is a precision voltage adjustment box for rally slot, raid and speed competitions, offering a 3–20V range with stable output and an externally accessible fuse for fast replacement during races. A must-have workshop tool for slot car tuners and club racers looking for reliable power control on any track layout.