Buster XL / Yamaha F115 hp

Cruising speed increases with 5 knots in comparison with 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