Posts: 3480
Location: Elk River, Minnesota | Hi Dave,
The 3 is for the number of blades, the 14 (first number) is the prop's diameter in inches, and the 19 (last number) is the prop's pitch in inches (theoretically, the prop would push the boat 19 inches in one full revolution, but the prop must slip so it is usually a little less than that)
The prop must match the hub for your particular engine. The diameter and pitch can change, along with blade design, which is what you get to play with when trying to find the correct prop for your particular rig. Your lower unit shaft will have a certain amount of splines which must match the hub of the prop in order for it to fit.
So... in quick review: the hub of the prop must have the same number of splines as the shaft in the lower unit (i.e suzuki specific for your motor size), the first number is the diameter, the last number is the pitch. Blade geometry/design plays a huge role in the function of the prop, so it must be considered in order to get the best prop for what you plan to use the boat for.
Questions are a good thing... helps the learning curve for you, and for many who are also following the thread.... So, ask away as you feel need...
Steve
Edited by VMS 8/23/2011 9:25 PM
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