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Old 10-22-2008, 09:02 AM
RobbieZ RobbieZ is offline
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Cool Speed calculation

Dear all,

I have one question that I cannot get out of my mind.

How do I calculate the theoretical speed at wich a boat will plane?

Sasolburg, South Africa
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Old 10-22-2008, 07:23 PM
CG Bob CG Bob is offline
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If you're building a model based on an already built full size (prototype) boat, you can calculate the scale speed. Divide the prototype hull speed by the square root of the models scale. Let's say that you're building a 1:12 th scale model of a boat that goes 100 mph; the square root of 12 is 3.464; 100/3.464 = 28.9 mph.
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