Posts: 32951
Location: Rhinelander, Wisconsin | The pitch and diameter of the stainless and aluminum may be the same, but other minor differences like design of the blades, surface area, cup, etc can cause what you describe. Generally speaking, a stainless in the same pitch, diameter, and design will give you better top end and a better hole shot. The stainless isn't really 'harder to turn', it should get the boat on plane faster and reach a better top end increasing efficiency in the process.
If the blades flex at all, the lift and forward thrust of the prop is diminished, so technically, the flex makes the motor work harder. |
