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Writer's pictureMike Hill

Prop Slip Speed Calculator



Welcome to Buckshot Racing #77 free online Prop Slip Speed Calculator! This tool helps you estimate the speed of your boat based on engine RPM, propeller pitch, and gear ratio, taking into account a 10% prop slip.


It's a quick and easy way to calculate your boat's expected performance with a change in the propeller.




Instructions:


  • Engine RPM: Enter the engine’s revolutions per minute (RPM). This is the speed at which your engine is turning.


  • Propeller Pitch: Input the pitch of your propeller in inches. This is the distance the propeller would move forward in one full rotation, assuming no slippage.


  • Gear Ratio: Enter the gear ratio between your engine and propeller. This is the ratio of how many engine turns it takes to rotate the propeller once.


  • Once you’ve entered all values, click the "Calculate Speed" button to see the estimated speed with a 10% slip factor. The result will be displayed in miles per hour (mph).

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