Related Questions

What is a flathead on a Harley?

A flathead on a Harley is an engine with valves located in the engine block, rather than in the cylinder head like modern engines. It was used on Harley-Davidson motorcycles from the early 1900s through the 1940s and was known for its durability and simplicity. Harley-Davidson produced several versions of the flathead engine over the years, including the Model D, Model R, and Model W. While no longer used in modern motorcycles, the flathead engine remains an important part of Harley-Davidson's history and heritage.

Why is it called Knucklehead Harley?

The Knucklehead is a type of engine developed by Harley-Davidson and introduced in 1936. It is named for the shape of its rocker boxes, which resemble the knuckles of a clenched fist. The Knucklehead engine was a significant improvement over the previous flathead engine, with overhead valves that improved its performance and reliability. It quickly became popular among riders and is now considered a classic design, with the term 'Knucklehead' commonly used to refer to Harley-Davidson motorcycles powered by this engine.

How much horsepower does a Knucklehead have?

The horsepower of a Knucklehead engine varies depending on the specific model and modifications made to the engine. When it was first introduced in 1936, it had a power output of around 40-45 horsepower, and some versions produced up to 60 horsepower by the time it was discontinued in 1947. However, early motorcycle engine horsepower ratings were not as precise or standardized as they are today, and many Knucklehead motorcycles have been modified or customized, which can affect their power output.