Marine propeller and method

A marine propeller comprising:

• a hub, a plurality of propeller blades, a plurality of blade disks, each of said blade disks affixed to said hub for releasably securing one of said propeller blades, said blade disks each defining a series of apertures, said apertures arranged in a circular pattern, said apertures spaced apart by a first angular amount, said blade disks each defining a series of top pin holes, said top pin holes arranged in a circular pattern, said top pin holes spaced apart by a first angular amount, said blade disks each defining a series of bottom pin holes, said bottom pin holes arranged in a circular pattern, said bottom pin holes spaced apart by a second angular amount, said first angular amount different from said second angular amount, means to secure one each of said propeller blades to one each of said blade disks, said propeller blade securing means for selective reception in one of said apertures, and a plurality of pins, said pins for positioning in said top pin holes.

A method of adjusting a propeller having a removable blade, said blade having an adjustable pitch, said propeller having a blade disk attached to a central hub, said blade disk having a plurality of apertures, said apertures arranged in a circular pattern, said apertures spaced apart by a first angular amount, said blade disk having a plurality of bottom pin holes, said bottom pin holes arranged in a circular pattern, said bottom pin holes spaced apart by a second angular amount, said first angular amount different from said second angular amount, the method comprising the steps of:

• (a) rotating the blade disk in a first direction by said first angular amount relative to the hub,
• (b) affixing the rotated blade disk to the hub,
• (c) rotating the blade relative to the blade disk in an opposite direction by said second angular amount for a net pitch change of the propeller blade equal to the difference between said first angular amount and said second angular amount.