Bob's Machine Shop Quad IV X Round Ear

Step bottom boats, some pad bottom boats and air entrapment hulls generally do not require bow lift. However, not all sport boats have natural bow lift. For those applications, we are pleased to announce the arrival of our recently developed Quad IV-X, four blade stainless steel propellers. At 15 in diameter, this round-eared hybrid will provide the added bow lift necessary for conventional deep V hulls and heavier boats with moderate power. In some instances, the Quad IV-X will also work well on step and pad bottom hulls. Our Quad IV-X delivers excellent hole-shot, great mid-range cruise economy and acceleration, along with superb handling at top-end. Where bow lift is appreciated, the Quad IV-X has stunning top-end numbers. The square bore design is standard on all propellers. Pitches range from 19”- 36” in 1” increments. Naturally, right-hand rotation and counter-rotation are available. Precision balance, polishing and heat treatment are standard. Blueprinting/ lab finishing is available at an extra charge but it will void the one year warranty.