crankcam

**Crankcam**

A crankcam, short for crankshaft camshaft, is a type of camshaft used in internal combustion engines that is driven directly by the crankshaft rather than by a timing belt or chain. This design eliminates the need for a separate camshaft drive system, simplifying engine assembly and reducing potential points of failure.

Crankcams are commonly found in high-performance and racing engines, particularly in applications where reliability and durability are critical. They offer several advantages, including reduced weight, fewer moving parts, and improved engine balance. However, they can also introduce challenges such as increased complexity in manufacturing and maintenance, as well as potential issues with timing synchronization if not properly managed.

The concept of a crankcam was first explored in the early 20th century, with early prototypes appearing in experimental and military engines. Modern crankcams are typically made from high-strength materials like forged steel or titanium alloys to withstand the extreme stresses involved in high-performance applications. They are often paired with advanced valve train systems, such as hydraulic lifters or direct-acting valves, to optimize engine performance.

In practical terms, crankcams are used in various high-performance engines, including those in racing cars, motorcycles, and even some high-end production vehicles. They are particularly favored in applications where minimal maintenance and maximum reliability are required, such as in endurance racing or military vehicles. However, their use is less common in everyday passenger cars due to cost and complexity.

Overall, crankcams represent a specialized solution for engines where traditional camshaft drives are insufficient, offering unique benefits in terms of reliability and performance at the expense of added engineering complexity.