This implies that when pistons 1 and 4 move up, pistons 2 and 3 move down. This means that the pistons are 180 degrees from each other (1 and 2, 3 and 4). The outer pins will point down, and the inner pins will point up. And then, during rotation, things will flip. It has the two outer crankpins point up, and the two inner crankpins point down. This simple configuration is the most used type of crankshaft. So why did Yamaha choose the cross-plane configuration instead of the commonly used flat-plane configuration? And what benefits does this step provides Yamaha’s engines? Let’s find out… Flat Plane Configuration
They focused on the crankshaft and decided to have something different from other inline 4 engines. However, starting from 2009, Yamaha decided to have a different designed engine from its competitors.
Yamaha uses inline 4 engines in many of its motorcycles as many motorcycle manufacturers do. Yamaha is a famous Japanese motorcycle manufacturer known for its powerful sports bikes.
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