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It mostly depends on the weight or displacement of the craft you put it on. Put it on a little 10 foot flat-bottomed speed boat, you might get 60mph. Put it on a 30 foot pontoon boat, you will do good to get 15mph. It also makes a huge difference what pitch propeller you install. You must match the pitch both to the HP of the motor as well as the size of the boat. Of course, the absolute fastest it will go is if you drop it out of an airplane. Then it will go around 220 mph!

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15y ago
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