V-twin engines are two-cylinder engines where the cylinders share a common crankshaft but are not parallel with each other. They are arranged in a V configuration, with separate cylinder heads ...

The parallel-twin engine is the new darling of motorcycle manufacturers. There are a few reasons. It is more cost-effective to manufacture than a V-twin and easier to cool as well. With current ...

From the cruisers that do this, we think there is one parallel-twin cruiser that is the most balanced choice in 2025. Here’s why. To ensure accuracy, ...

The image is of the morning sky over London one hot day in June. Why do the contrails end so evenly and abruptly? David Muir Edinburgh, UK. Condensation trails, or contrails, are formed when the ...

Contrails aren't necessarily cloud-like streaks of gas, rather tiny ice crystals. Contrails typically form between altitudes of 32,000 feet and 42,000 feet, most commonly known as cruising altitude.

It would be easy to assume that the commercial aviation industry’s fuel consumption was its biggest impact on the environment. For example, a Boeing 737-800 burns about 5,000 pounds of fuel an ...

CFMoto is joining the party with a parallel-twin with a CVT. The motorcycle world is super hot on semi-automatic and automatic transmissions. The likes of KTM's AMT, Yamaha's Y-AMT, and Honda's E ...

These condensation trails, or “contrails,” which form when water vapor condenses around jet-engine pollutants, have been contributing to climate change since at least 1999, experts say.

In a recent reveal showing test footage and details, however, we’re told that the Hornet will carry ‘a 755cc Parallel-Twin 8-valve Unicam engine with a 270° crank.’(via Motorcycle.com). That means ...