Tag: speed and performance

What is Horsepower (HP)? A Brief History of Power

The term Horsepower (HP) is undoubtedly one of the most frequently used terms by car enthusiasts. Although it is the first criterion we look at when measuring a vehicle’s performance, it is not exactly equal to “the power of a single horse,” contrary to popular belief. So, how did this unit, which we at North Tuned place at the center of performance, come about?

James Watt and Marketing Genius
The term was first coined in 1782 by James Watt, a successful Scottish engineer and inventor who improved steam engines. To explain the capability of his engines to the public, Watt chose horses—the most common “engine” of that era—as a point of comparison.

How Was 1 Horsepower Calculated?
Watt observed horses working in coal mines. He calculated that, on average, a horse could pull 45 kg of coal 1.1 meters in one second. This mathematically equated to approximately 50 kg-m/s of work. However, to make his engines seem even more reliable and impressive, Watt increased this figure by 50%, rounding it up to 75 kg-m/s, and defined this as 1 Horsepower (HP).

In short, the modern definition is:

1 Horsepower (HP) is the amount of power required to lift a 75 kg load 1 meter vertically in 1 second.

Today, at North Tuned, we take James Watt’s fundamental legacy and optimize it with modern software and engineering solutions, efficiently awakening the “sleeping” horses within your vehicle.