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Most boaters know that pitch and diameter matter, but there are a few lesser-known factors that can make a big difference in how your boat performs. These are the things we see every day in the shop that are often overlooked. Your Engine’s RPM Range Matters More Than Speed Many boat owners focus on top speed, but your engine is designed to run within a specific wide open throttle RPM range. If your prop is too aggressive, your engine may never reach that range, which puts extra strain on …

Two boat propellers can have the same diameter, the same pitch, and even the same number of blades, yet perform noticeably differently on the same boat. That's because boat propeller performance depends on much more than the numbers stamped on the hub. Rake, cup, blade area, blade shape, barrel design, and other details influence how effectively a propeller grabs the water and transfers engine power into acceleration, lift, speed, and handling. If you're still learning the basics of propeller pi …