I know....this topic has been beaten to death but i'm just trying to figure it out once and for all. I'm starting to get the understanding that the best way to correctly prop your boat is to get a baseline on a certain prop and then change the pitch to increase or decrease rpm's to get the motor into optimum operating rpm range of your motor, in your condition. If you have several props with several pitches to try and live on the water, this seems to be a pretty easy task. Unfortunatly, i don't. I'm also figuring that things like rake, cupping, diameter and material (ss, alum) also play a big part in selecting the correct prop, for whatever YOU'RE going to use your boat for. Understood. I called the manufacturer of my boat and asked what was the original prop back in '86 that was sold with my setup and he said 13 3/4 x 21. Fine. Figure that would be a good place to start. The only problem is, the props i'm looking at either come in a 14 x 19 or a 14 1/4 x 21. Which is closer to the stock prop size? Does diameter have a big effect and should you change pitch or rake or whatever if you change diameter? Any info on this would be appreciated and i'm sorry if this post about props is driving people nuts, but, join the crew
<br /><br />- Jersey
