I'll write and post actual data, later. The 5-blade, by the numbers, did not improve performance on the MasterCraft boats we tested. A 15" diameter 4-blade, did make an improvement in the measurements and in the "feel" of the boat in the 9-25 mph range. The extra blade did have an impact on fuel economy - negatively. The extra blade is extra drag and consumes horsepower. Great idea and experiment, though.
|