Posts: 443
Location: Indiana | I have a 2008 ranger 620 with an Evinrude 225HO. I currently run a 4 blade 14X21 stainless prop. The motor is mounted as high on the transom as it will go. I have decent hole shot and top end speed. But rpms run a little low (I forget the actual number but will get the boat out in the next day or two and report back).
I am going to buy a second prop, mainly as a spare but also for use in shallow rocky water. I think I would like aluminum as it will be used in these shallow rocky waters where I don't want to take a chance of tearing up my stainless prop.
I know that I could turn more rpms compared to what the motor can run. Top end speed is not a big concern of mine. Hole shot would be my main concern as I pull skiers and tubers in the summer pretty often. But for the skiing my current prop does pretty good.
I guess I am interested in what effect pitch change typically has, if lowered or raised, on rpm and speed. Same with 3 vs. 4 blade design. Also what can I expect as a change in going from stainless to aluminum? |
