Buster XL / Yamaha F115 hp
Buster XL with a Yamaha F115 . Cruising speed 2 knots faster than the comparative Yamaha original steel propeller.
In this test, the pitch is the same even though we are changing from a 3-blade to a 4- blade propeller . The engine has the capacity and strength to cope with it and it results in higher speed over the entire varvtalsregisret. The difference is about 2 knots top speed , the original propeller advantage
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