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Propeller effect to speed and rpm's.
A 16 feet V-hull (estimated 15-20 degrees at aft) planing boat equipped with 4-stroke Honda or 2-stroke Yamaha. A Propulse variable pitch propeller was tested with Honda. Yamaha's prop pitch is not known. Both were 50hp and year models around 2000. Propulse is "prop 2", original propeller is "prop 1".
Boat info:
lenght 16 feet 2 inch (490 cm)
width 6 feet 14 inch (197 cm)
empty weight 728 pounds (330 kg's)
cargo(load) during tests, around 450-500 pounds (~200 kg's)
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